{"id":26,"date":"2024-09-21T14:40:24","date_gmt":"2024-09-21T14:40:24","guid":{"rendered":"https:\/\/pixelsconverter.online\/?page_id=26"},"modified":"2025-11-10T18:02:39","modified_gmt":"2025-11-10T18:02:39","slug":"px-to-em-converter","status":"publish","type":"page","link":"https:\/\/toolsmate.online\/vi\/px-to-em-converter\/","title":{"rendered":"Chuy\u1ec3n \u0111\u1ed5i PX sang EM"},"content":{"rendered":"<style>.kb-row-layout-id26_110223-07 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id26_110223-07 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id26_110223-07 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);max-width:var( --global-content-width, 1100px );padding-left:var(--global-content-edge-padding);padding-right:var(--global-content-edge-padding);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id26_110223-07 > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id26_110223-07 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id26_110223-07 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id26_110223-07 alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top kb-theme-content-width\">\n<style>.kadence-column26_123729-be > .kt-inside-inner-col,.kadence-column26_123729-be > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column26_123729-be > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column26_123729-be > .kt-inside-inner-col{flex-direction:column;}.kadence-column26_123729-be > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column26_123729-be > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column26_123729-be{position:relative;}@media all and (max-width: 1024px){.kadence-column26_123729-be > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column26_123729-be > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column26_123729-be\"><div class=\"kt-inside-inner-col\">\n<h1 class=\"wp-block-heading has-theme-palette-9-color has-text-color has-link-color wp-elements-58ccdcf4fe060fd0c5afd976c6fe4477\">B\u1ed8 CHUY\u1ec2N \u0110\u1ed4I PX SANG EM<\/h1>\n<\/div><\/div>\n\n\n<style>.kadence-column26_98b915-b7 > .kt-inside-inner-col,.kadence-column26_98b915-b7 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column26_98b915-b7 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column26_98b915-b7 > .kt-inside-inner-col{flex-direction:column;}.kadence-column26_98b915-b7 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column26_98b915-b7 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column26_98b915-b7{position:relative;}@media all and (max-width: 1024px){.kadence-column26_98b915-b7 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column26_98b915-b7 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column26_98b915-b7\"><div class=\"kt-inside-inner-col\">\n<div class=\"container\">\n    <div class=\"input-group\">\n        <input type=\"number\" id=\"pxInput\" placeholder=\"Nh\u1eadp gi\u00e1 tr\u1ecb px\">\n        <label for=\"pxInput\">Pixel (PX)<\/label>\n    <\/div>\n    <!-- Icon for page change -->\n    <span id=\"pageChangeIcon\" class=\"rotate-icon\">\n        <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 52 52\" fill=\"#000000\" class=\"CalculatorField_calculator-field__reverse-icon__vb2AT\">\n            <g>\n                <path d=\"M48.5,2h-3C44.7,2,44,2.7,44,3.5v7c0,0.9-1,1.5-1.6,0.8l0,0C37.7,6.1,31,3.4,23.7,4.1 c-2.6,0.2-5.1,1-7.4,2.2c-1.2,0.6-2.4,1.3-3.4,2.1c-0.7,0.5-0.8,1.6-0.2,2.3l2.1,2.1c0.5,0.5,1.3,0.6,1.9,0.2 c1.2-0.8,2.5-1.5,3.9-2.1c0.6-0.2,1.3-0.4,2-0.6c6.3-1.2,12.3,1.3,15.7,5.4c1.2,1.4,0.3,2.3-0.7,2.3h-7c-0.8,0-1.6,0.7-1.6,1.5v3 c0,0.8,0.8,1.5,1.6,1.5h18.2c0.7,0,1.2-0.6,1.2-1.3V3.5C50,2.7,49.3,2,48.5,2z\"><\/path>\n                <path d=\"M39.4,37.4c-0.6-0.6-1.5-0.6-2.1,0c-1.6,1.6-3.6,2.9-5.8,3.7c-0.6,0.2-1.3,0.4-2,0.6 c-6.3,1.2-12.3-1.3-15.7-5.4c-1.2-1.4-0.3-2.3,0.7-2.3h7c0.8,0,1.5-0.7,1.5-1.5v-3c0-0.8-0.7-1.5-1.5-1.5H3.3C2.6,28,2,28.6,2,29.3 v19.2C2,49.3,2.7,50,3.5,50h3C7.3,50,8,49.3,8,48.5v-7c0-0.9,1-1.5,1.6-0.8l0,0c4.6,5.2,11.4,7.9,18.7,7.2c2.6-0.2,5.1-1,7.4-2.2 c2.2-1.1,4.1-2.5,5.7-4.1c0.6-0.6,0.6-1.6,0-2.1L39.4,37.4z\"><\/path>\n            <\/g>\n        <\/svg>\n    <\/span>\n    <div class=\"input-group\">\n        <input type=\"number\" id=\"emInput\" placeholder=\"Nh\u1eadp gi\u00e1 tr\u1ecb EM\">\n        <label for=\"emInput\">EM<\/label>\n    <\/div>\n    <div class=\"result\" id=\"resultDisplay\">K\u1ebft qu\u1ea3 s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb \u1edf \u0111\u00e2y<\/div>\n<\/div>\n\n<script>\n    const defaultEmValue = 16; \/\/ Default EM value\n    const pxInput = document.getElementById('pxInput');\n    const emInput = document.getElementById('emInput');\n    const resultDisplay = document.getElementById('resultDisplay');\n    const copyIcon = document.createElement('span'); \/\/ Create the copy icon container\n\n    \/\/ Set the default value of the EM input field\n    emInput.value = defaultEmValue;\n\n    \/\/ Function to convert PX to EM\n    function convertPxToEm() {\n        const pxValue = parseFloat(pxInput.value);\n        const emValue = parseFloat(emInput.value); \/\/ Use the current EM input value\n        if (!isNaN(pxValue) && !isNaN(emValue)) {\n            const resultEm = pxValue \/ emValue;\n            resultDisplay.textContent = resultEm.toFixed(2) + 'em'; \/\/ Display the EM value with 'em' unit\n        } else {\n            resultDisplay.textContent = 'Result will be shown here';\n        }\n        resultDisplay.appendChild(copyIcon); \/\/ Append the copy icon next to the result\n    }\n\n    \/\/ Add event listeners for both input fields\n    pxInput.addEventListener('input', convertPxToEm);\n    emInput.addEventListener('input', convertPxToEm); \/\/ Re-use the same function for EM input changes\n\n    \/\/ Add the SVG copy icon directly next to the result text\n    copyIcon.innerHTML = `<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" height=\"24\" viewBox=\"0 0 24 24\" width=\"24\">\n      <path d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/>\n    <\/svg>`;\n    copyIcon.style.cursor = 'pointer';\n    copyIcon.style.marginLeft = '10px'; \/\/ Add some space between result and icon\n    copyIcon.style.verticalAlign = 'middle'; \/\/ Align the icon properly with the text\n    copyIcon.style.transition = 'transform 0.3s ease'; \/\/ Animation on click\n\n    \/\/ Function to copy result to clipboard when the icon is clicked\n    copyIcon.addEventListener('click', function() {\n        const emValue = resultDisplay.textContent;\n        if (emValue && emValue !== 'Result will be shown here') {\n            const valueToCopy = emValue.replace('em', '').trim(); \/\/ Remove the 'em' unit and trim the value\n            navigator.clipboard.writeText(valueToCopy).then(() => {\n                \/\/ Animation: Copy icon will grow slightly and then shrink back to indicate the action\n                copyIcon.style.transform = 'scale(1.2)'; \/\/ Enlarge the icon slightly\n                setTimeout(() => {\n                    copyIcon.style.transform = 'scale(1)'; \/\/ Return to original size after animation\n                }, 200);\n            }).catch(err => {\n                console.error('Failed to copy text:', err);\n            });\n        }\n    });\n    copyIcon.classList.add('copy-icon'); \/\/ Add the base class to the icon\n    \/\/ Add event listener for icon click to change the page\ndocument.getElementById('pageChangeIcon').addEventListener('click', function() {\n    \/\/ Change the URL to the desired page\n    window.location.href = 'https:\/\/toolsmate.online\/em-to-px-converter\/'; \/\/ Replace with the desired page link\n});\n<\/script>\n<style>\n.container {\n    background-color: #fff;\n    padding: 30px;\n    border-radius: 10px;\n    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);\n    max-width: 600px;\n    width: 100%;\n    display: flex;\n    flex-direction: column;\n    align-items: center; \/* Center content horizontally *\/\n}\n\n.input-group {\n    position: relative;\n    width: 100%; \/* Full width for the input fields *\/\n    display: flex;\n    justify-content: space-between; \/* Align inputs on both sides *\/\n}\n\nlabel {\n    position: absolute;\n    top: -6px;\n    left: 15px;\n    background-color: #fff;\n    padding: 0 5px;\n    font-size: 0.9rem;\n    color: #007bff;\n}\n\n.rotate-icon {\n    padding:10px;\n    display: inline-block;\n    cursor: pointer;\n    transition: transform 0.5s ease;\n    margin: 0 20px;\n    align-self: center; \/* Centers the icon between inputs *\/\n}\n\n.rotate-icon:hover {\n    transform: rotate(360deg);\n}\n\n#converterLink {\n    display: block;\n    margin-top: 20px;\n    font-size: 16px;\n    color: blue;\n    text-decoration: underline;\n}\n\n.result {\n    text-align: center;\n    font-size: 1.2rem;\n    font-weight: 600;\n    margin-top: 10px;\n    padding: 8px 10px;\n    background-color: #e7f3ff;\n    border-radius: 4px;\n    width:100%;\n}\n\n\/* Add transition for the copy icon *\/\n.copy-icon {\n    cursor: pointer;\n    margin-left: 10px;\n    vertical-align: middle;\n    transition: background-color 0.3s ease, transform 0.3s ease;\n    padding: 5px;\n    border-radius: 20%; \/* Make the icon look better with rounded corners *\/\n}\n\n@media (max-width: 600px) {\n    .container {\n        padding: 35px 15px;\n    }\n\n    .result {\n        font-size: 1rem;\n    }\n}\n<\/style>\n<\/div><\/div>\n\n<\/div><\/div>\n\n<style>.kb-row-layout-id26_eb2af1-b7 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id26_eb2af1-b7 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id26_eb2af1-b7 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);max-width:var( --global-content-width, 1100px );padding-left:var(--global-content-edge-padding);padding-right:var(--global-content-edge-padding);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id26_eb2af1-b7 > .kt-row-layout-overlay{opacity:0.30;}.kb-row-layout-id26_eb2af1-b7 ,.kb-row-layout-id26_eb2af1-b7 h1,.kb-row-layout-id26_eb2af1-b7 h2,.kb-row-layout-id26_eb2af1-b7 h3,.kb-row-layout-id26_eb2af1-b7 h4,.kb-row-layout-id26_eb2af1-b7 h5,.kb-row-layout-id26_eb2af1-b7 h6{color:var(--global-palette9, #ffffff);}.kb-row-layout-id26_eb2af1-b7 a{color:var(--global-palette7, #EDF2F7);}@media all and (max-width: 1024px){.kb-row-layout-id26_eb2af1-b7 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id26_eb2af1-b7 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id26_eb2af1-b7 alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top kb-theme-content-width\">\n<style>.kadence-column26_07e7a1-b8 > .kt-inside-inner-col,.kadence-column26_07e7a1-b8 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column26_07e7a1-b8 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column26_07e7a1-b8 > .kt-inside-inner-col{flex-direction:column;}.kadence-column26_07e7a1-b8 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column26_07e7a1-b8 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column26_07e7a1-b8{position:relative;}@media all and (max-width: 1024px){.kadence-column26_07e7a1-b8 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column26_07e7a1-b8 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column26_07e7a1-b8\"><div class=\"kt-inside-inner-col\">\n<h2 class=\"wp-block-heading\">Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n<p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a thi\u1ebft k\u1ebf web hi\u1ec7n \u0111\u1ea1i l\u00e0 t\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng \u0111\u00e1p \u1ee9ng. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o trang web \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb ch\u00ednh x\u00e1c tr\u00ean m\u1ecdi lo\u1ea1i m\u00e1y, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng B\u1ed9 chuy\u1ec3n \u0111\u1ed5i PX sang EM \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u00e1 tr\u1ecb pixel c\u1ed1 \u0111\u1ecbnh (px) th\u00e0nh gi\u00e1 tr\u1ecb EM c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng \u2013 v\u00e0 vi\u1ec7c b\u1ea1n thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef, kho\u1ea3ng \u0111\u1ec7m ho\u1eb7c l\u1ec1 v\u00e0 chuy\u1ec3n pixel sang EM kh\u00f4ng c\u00f3 g\u00ec kh\u00e1c bi\u1ec7t, \u0111i\u1ec1u n\u00e0y \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec b\u1ea1n t\u1ea1o ra \u0111\u1ec1u c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh theo \u0111\u1ed9 ph\u00e2n gi\u1ea3i m\u00e0n h\u00ecnh kh\u00e1c theo \u00fd mu\u1ed1n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 ti\u1ebft ki\u1ec7m th\u1eddi gian, kh\u00f4ng ch\u1ec9 gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m th\u1eddi gian m\u00e0 c\u00f2n gi\u1ea3m thi\u1ec3u s\u1ed1 l\u1ed7i b\u1ea1n c\u00f3 th\u1ec3 m\u1eafc ph\u1ea3i trong h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng, ch\u01b0a k\u1ec3 \u0111\u1ebfn vi\u1ec7c n\u00f3 li\u00ean quan \u0111\u1ebfn CSS c\u1ee7a b\u1ea1n. B\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i t\u1ef1 m\u00ecnh t\u00ednh to\u00e1n m\u1ed9t ph\u1ea7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u00f3, v\u00e0 sau khi b\u1ea1n nh\u1eadp xong gi\u00e1 tr\u1ecb pixel, \u1ee9ng d\u1ee5ng s\u1ebd t\u1ef1 \u0111\u1ed9ng cung c\u1ea5p cho b\u1ea1n gi\u00e1 tr\u1ecb c\u1ee7a s\u1ed1 EM c\u1ea7n thi\u1ebft li\u00ean quan \u0111\u1ebfn c\u1ee1 ch\u1eef c\u01a1 b\u1ea3n m\u00e0 b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng (16 ch\u1eafc ch\u1eafn l\u00e0 c\u1ee1 ch\u1eef c\u01a1 b\u1ea3n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110\u01a1n v\u1ecb PX v\u00e0 EM trong CSS l\u00e0 g\u00ec?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">PX (Pixel) l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p>Thi\u1ebft k\u1ebf web l\u00e0 m\u1ed9t ph\u00e9p \u0111o t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng \u0111\u01a1n v\u1ecb pixel (px). N\u00f3 c\u0169ng cung c\u1ea5p k\u00edch th\u01b0\u1edbc tuy\u1ec7t \u0111\u1ed1i c\u1ee7a m\u00e0n h\u00ecnh, t\u1ee9c l\u00e0 n\u00fat 100 px t\u1ea1i b\u1ea5t k\u1ef3 th\u1eddi \u0111i\u1ec3m n\u00e0o, b\u1ea5t k\u1ec3 ng\u01b0\u1eddi d\u00f9ng \u0111ang s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb n\u00e0o v\u00e0 \u0111\u1ed9 ph\u00f3ng \u0111\u1ea1i n\u00e0o.<\/p>\n\n\n\n<p>C\u00e1c \u0111i\u1ec3m \u1ea3nh kh\u00f4ng ch\u00ednh x\u00e1c nh\u01b0ng c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c. Gi\u00e1 tr\u1ecb \u0111i\u1ec3m \u1ea3nh c\u1ed1 \u0111\u1ecbnh s\u1ebd t\u1ea1o ra b\u1ed1 c\u1ee5c kh\u00f4ng \u1ed5n \u0111\u1ecbnh cho nhi\u1ec1u thi\u1ebft b\u1ecb, ch\u1eb3ng h\u1ea1n nh\u01b0 v\u1ecf \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 m\u00e0n h\u00ecnh cao c\u1ea5p, ngo\u00e0i vi\u1ec7c t\u1ea1o ra gi\u00e1 tr\u1ecb \u0111\u1ed9 d\u1ec5 \u0111\u1ecdc th\u1ea5p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">EM (\u0110\u01a1n v\u1ecb t\u01b0\u01a1ng \u0111\u1ed1i) l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p>\u0110\u01a1n v\u1ecb EM (em) l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb CSS kh\u00e1c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 \u0111\u01a1n v\u1ecb t\u01b0\u01a1ng \u0111\u1ed1i v\u00e0 \u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i trong tr\u01b0\u1eddng h\u1ee3p k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u1ee7a ph\u1ea7n t\u1eed cha l\u1edbn h\u01a1n (ho\u1eb7c ph\u1ea7n t\u1eed theo sau ph\u1ea7n t\u1eed cha).<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-theme-palette-2-background-color has-background wp-element-button\" href=\"https:\/\/cssunitconverter.vercel.app\/blog\/understanding-em-unit-in-css\">B\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u01a1n v\u1ecb CSS \u2013 Hi\u1ec3u v\u1ec1 \u0111\u01a1n v\u1ecb EM trong CSS<\/a><\/div>\n\n\n\n<div class=\"wp-block-button is-style-fill\"><a class=\"wp-block-button__link has-theme-palette-2-background-color has-background wp-element-button\" href=\"https:\/\/www.w3schools.com\/cssref\/css_units.php\">W3Schools \u2013 \u0110\u01a1n v\u1ecb CSS<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-theme-palette-2-background-color has-background wp-element-button\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Learn\/CSS\/Building_blocks\/Values_and_units#numbers_lengths_and_percentages\">MDN \u2013 \u0110\u01a1n v\u1ecb CSS<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-theme-palette-2-background-color has-background wp-element-button\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/CSS\/length\">MDN \u2013 CSS<\/a><\/div>\n<\/div>\n\n\n\n<p><strong>V\u00ed d\u1ee5:<\/strong><\/p>\n\n\n\n<p>K\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 16px, <\/p>\n\n\n\n<pre class=\"wp-block-code has-theme-palette-2-background-color has-background\"><code>1em =16px. 2em = 32px 0,75em = 12px<\/code><\/pre>\n\n\n\n<p>T\u00ednh t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a EM cho ph\u00e9p n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t thi\u1ebft k\u1ebf hi\u1ec7u qu\u1ea3, \u0111\u00e1p \u1ee9ng v\u00e0 kh\u1ea3 d\u1ee5ng. C\u00e1c thi\u1ebft b\u1ecb EM \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh v\u1edbi kh\u1ea3 n\u0103ng ph\u00f3ng to c\u1ee7a tr\u00ecnh duy\u1ec7t ho\u1eb7c ng\u01b0\u1eddi d\u00f9ng, nh\u1eefng ng\u01b0\u1eddi th\u1eadm ch\u00ed c\u00f2n quan t\u00e2m h\u01a1n \u0111\u1ebfn ph\u00f4ng ch\u1eef l\u1edbn, b\u1eb1ng c\u00e1ch cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng c\u00f9ng m\u1ee9c \u0111\u1ed9 r\u00f5 n\u00e9t v\u00e0 thi\u1ebft k\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng EM thay v\u00ec PX?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>EM thay th\u1ebf PX:<\/strong> Ng\u01b0\u01a1i \u0111\u00e3 b\u00e1n nh\u1eefng g\u00ec ng\u01b0\u01a1i mong mu\u1ed1n:<\/li>\n\n\n\n<li><strong>Ri\u00eang t\u01b0:<\/strong> N\u00f3 kh\u00f4ng b\u1ecb c\u00f4 l\u1eadp v\u1edbi c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh v\u00e0 thi\u1ebft b\u1ecb kh\u00e1c.<\/li>\n\n\n\n<li><strong>C\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c:<\/strong> d\u1ec5 hi\u1ec3u h\u01a1n v\u1edbi ng\u01b0\u1eddi d\u00f9ng v\u1ec1 ph\u00f4ng ch\u1eef v\u00e0 d\u1ec5 \u0111\u1ecdc.<\/li>\n\n\n\n<li><strong>T\u1ec9 l\u1ec7: <\/strong>S\u1ed1 l\u01b0\u1ee3ng th\u00e0nh vi\u00ean l\u00e0 c\u1ed1 \u0111\u1ecbnh.<\/li>\n\n\n\n<li><strong>C\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh:<\/strong> L\u00fd t\u01b0\u1edfng tr\u00ean c\u00e1c khu\u00f4n kh\u1ed5 \u0111\u00e3 c\u00f3 s\u1eb5n <strong>Tailwind, Bootstrap ho\u1eb7c l\u01b0\u1edbi CSS.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Ngh\u0129a l\u00e0, c\u00e1c gi\u00e1 tr\u1ecb EM s\u1ebd cho b\u1ea1n bi\u1ebft b\u1ea1n \u0111\u00e3 t\u1ea1o v\u00e0 thi\u1ebft k\u1ebf nh\u1eefng g\u00ec, nh\u1eefng g\u00ec thu\u1eadn ti\u1ec7n \u0111\u1ec3 s\u1eed d\u1ee5ng, th\u00e0nh ph\u1ea7n n\u00e0o c\u1ee7a \u0111i\u1ec3m \u1ea3nh c\u1ed1 \u0111\u1ecbnh kh\u00f4ng thu\u1eadn ti\u1ec7n trong m\u1ed9t d\u1ecbp c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00f4ng th\u1ee9c chuy\u1ec3n \u0111\u1ed5i PX sang EM<\/h2>\n\n\n\n<p>Ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01a1n gi\u1ea3n nh\u1ea5t s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3i m\u00e3 c\u00e1c \u0111i\u1ec3m \u1ea3nh th\u00e0nh EM l\u00e0:<\/p>\n\n\n\n<pre class=\"wp-block-code has-theme-palette-2-background-color has-background\"><code>em = px \/ k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n<\/code><\/pre>\n\n\n\n<p>C\u00e1c <strong>ph\u00f4ng ch\u1eef chu\u1ea9n<\/strong> c\u1ee7a ph\u1ea7n l\u1edbn c\u00e1c tr\u00ecnh duy\u1ec7t web l\u00e0 <strong>16 px.<\/strong><\/p>\n\n\n\n<p><strong>V\u00ed d\u1ee5:<\/strong><\/p>\n\n\n\n<p>32 pixel th\u00e0nh EM (s\u1eed d\u1ee5ng ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n l\u00e0 16):<\/p>\n\n\n\n<pre class=\"wp-block-code has-theme-palette-2-background-color has-background\"><code>32 \u00f7 16 = 2em<\/code><\/pre>\n\n\n\n<p>V\u00ec th\u1ebf, <strong>32px b\u1eb1ng 2em.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PX s\u1ebd \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o C\u00f4ng c\u1ee5 chuy\u1ec3n \u0111\u1ed5i EM<\/h2>\n\n\n\n<p>Qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i c\u0169ng kh\u00f4ng th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng n\u1ebfu c\u00e1c t\u1ec7p CSS ph\u00e1t tri\u1ec3n qu\u00e1 l\u1edbn. <strong>Chuy\u1ec3n \u0111\u1ed5i PX sang EM<\/strong> c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong <strong>toolsmate.online<\/strong> v\u00e0 \u0111i\u1ec1u \u0111\u00f3 c\u0169ng kh\u00f4ng qu\u00e1 kh\u00f3 kh\u0103n theo c\u00e1ch sau \u0111\u00e2y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>K\u00edch ho\u1ea1t c\u00f4ng c\u1ee5 chuy\u1ec3n \u0111\u1ed5i PX sang EM tr\u00ean trang web.<\/li>\n\n\n\n<li>S\u1ed1 l\u01b0\u1ee3ng pixel c\u1ea7n thi\u1ebft \u1edf \u0111\u1ea7u v\u00e0o ph\u1ea3i l\u00e0 t\u00f9y ch\u1ecdn (v\u00ed d\u1ee5: 24 pixel) tr\u1eeb khi c\u00f3 quy \u0111\u1ecbnh kh\u00e1c.<\/li>\n\n\n\n<li>Ch\u1ecdn ho\u1eb7c ch\u1ecdn k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef m\u1eb7c \u0111\u1ecbnh = 16pix.<\/li>\n\n\n\n<li>Ch\u1ecdn s\u1eeda \u0111\u1ed5i tr\u00ean c\u00f4ng c\u1ee5 ho\u1eb7c gi\u1eef nguy\u00ean.<\/li>\n\n\n\n<li>Ch\u00e8n k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm (EM) c\u1ee7a b\u1ea1n v\u00e0o m\u00e3 CSS.<\/li>\n<\/ul>\n\n\n\n<p><strong>V\u00ed d\u1ee5 chuy\u1ec3n \u0111\u1ed5i<\/strong><\/p>\n\n\n\n<p><strong>\u0110\u1ea7u v\u00e0o:<\/strong> 24px<\/p>\n\n\n\n<p><strong>K\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n:<\/strong> 16px<\/p>\n\n\n\n<p><strong>K\u1ebft qu\u1ea3:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code has-theme-palette-2-background-color has-background\"><code>24 \u00f7 16 = 1,5em<\/code><\/pre>\n\n\n\n<p>\u0110\u1ea7u ra: 1,5em<\/p>\n\n\n\n<p>V\u1eady th\u00f4i! Nhanh ch\u00f3ng, \u0111\u01a1n gi\u1ea3n v\u00e0 ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c thu\u00ea ngo\u00e0i B\u1ed9 chuy\u1ec3n \u0111\u1ed5i PX sang EM.<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c<\/h3>\n\n\n\n<p>Vi\u1ec7c thay \u0111\u1ed5i m\u1ed9t l\u01b0\u1ee3ng l\u1edbn gi\u00e1 tr\u1ecb pixel nh\u01b0 v\u1eady l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh ph\u1ee9c t\u1ea1p. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ngay l\u1eadp t\u1ee9c \u0111\u1ec3 t\u1ea1o ra ph\u00e9p t\u00ednh, v\u00e0 do \u0111\u00f3, b\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i ngh\u0129 \u0111\u1ebfn c\u00e1c ph\u00e9p t\u00ednh m\u00e0 ch\u1ec9 c\u1ea7n t\u1eadp trung v\u00e0o vi\u1ec7c thi\u1ebft k\u1ebf.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Tr\u00e1nh c\u00e1c l\u1ed7i s\u1ed1 h\u1ecdc.<\/h3>\n\n\n\n<p>Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i d\u01b0\u1edbi b\u1ea5t k\u1ef3 h\u00ecnh th\u1ee9c n\u00e0o, ngay c\u1ea3 khi \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u1ee7 c\u00f4ng, ph\u1ea7n l\u1edbn \u0111\u1ec1u c\u00f3 th\u1ec3 x\u1ea3y ra sai s\u00f3t do con ng\u01b0\u1eddi. H\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh th\u00ec ch\u1eafc ch\u1eafn, \u0111\u1ea3m b\u1ea3o 100%.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Tuy\u1ec7t v\u1eddi cho c\u00e1c d\u1ef1 \u00e1n CSS l\u1edbn<\/h3>\n\n\n\n<p>C\u00e1c b\u1ea3ng \u0111\u1ecbnh d\u1ea1ng l\u1edbn \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y \u0111\u1ec1u \u0111\u1eb7n. Kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 k\u00edch th\u01b0\u1edbc c\u1ee7a c\u00f4ng vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i, kho\u1ea3ng c\u00e1ch, ki\u1ec3u ch\u1eef, v.v.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. K\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n t\u00f9y ch\u1ec9nh.<\/h3>\n\n\n\n<p>Thi\u1ebft k\u1ebf ho\u1eb7c th\u01b0\u01a1ng hi\u1ec7u c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c t\u1ea1o ra d\u1ef1a tr\u00ean gi\u1ea3 \u0111\u1ecbnh ph\u00f4ng ch\u1eef c\u01a1 s\u1edf kh\u00f4ng ph\u1ea3i 16px (v\u00ed d\u1ee5: 18 ho\u1eb7c 20). B\u1ed9 chuy\u1ec3n \u0111\u1ed5i s\u1ebd gi\u00fap b\u1ea1n c\u1ea5u h\u00ecnh k\u00edch th\u01b0\u1edbc c\u01a1 s\u1edf theo thi\u1ebft l\u1eadp c\u1ee7a d\u1ef1 \u00e1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Th\u00fac \u0111\u1ea9y kh\u1ea3 n\u0103ng ph\u1ea3n \u1ee9ng.<\/h3>\n\n\n\n<p>Vi\u1ec7c thi\u1ebft l\u1eadp c\u00e1c b\u1ed1 c\u1ee5c m\u01b0\u1ee3t m\u00e0 kh\u00e1 \u0111\u01a1n gi\u1ea3n v\u00e0 nh\u00ecn chung, kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn h\u00e0ng h\u00f3a t\u1ed1t h\u01a1n \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng kh\u00e1 d\u1ec5 d\u00e0ng \u0111\u1ec3 xem x\u00e9t v\u00ec ch\u1ec9 s\u1eed d\u1ee5ng c\u00e1c \u0111\u01a1n v\u1ecb EM ch\u1ee9 kh\u00f4ng ph\u1ea3i pixel.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Ki\u1ec3u ch\u1eef \u0111\u00e1p \u1ee9ng<\/h3>\n\n\n\n<p>\u0110\u00e2y l\u00e0 v\u0103n b\u1ea3n c\u00f3 k\u00edch th\u01b0\u1edbc \u0111\u1ed9ng n\u00ean k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u00f3 th\u1ec3 l\u00e0 EM.<\/p>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<pre class=\"wp-block-code has-theme-palette-2-background-color has-background\"><code>body { c\u1ee1 ch\u1eef: 16px; } h1 { c\u1ee1 ch\u1eef: 2em; \/* b\u1eb1ng 32px *\/ } p { c\u1ee1 ch\u1eef: 1em; \/* b\u1eb1ng 16px *\/ }<\/code><\/pre>\n\n\n\n<p>M\u1ecdi th\u1ee9 li\u00ean quan \u0111\u1ebfn vi\u1ec7c thay \u0111\u1ed5i ph\u00f4ng ch\u1eef th\u00e0nh k\u00edch th\u01b0\u1edbc 18px \u0111\u1ec1u t\u1ef1 \u0111\u1ed9ng b\u1ecb coi nh\u1eb9 trong tr\u01b0\u1eddng h\u1ee3p c\u00f3 \u0111\u1ed9ng th\u00e1i nh\u01b0 v\u1eady.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. B\u1ed1 c\u1ee5c c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng<\/h3>\n\n\n\n<p>EM \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o kho\u1ea3ng \u0111\u1ec7m, chi\u1ec1u cao d\u00f2ng v\u00e0 l\u1ec1 sao cho ph\u00f9 h\u1ee3p. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o s\u1ef1 ti\u1ec7n l\u1ee3i t\u1ed1i \u0111a gi\u1eefa c\u00e1c kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c m\u00e0n h\u00ecnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Thi\u1ebft k\u1ebf \u01b0u ti\u00ean thi\u1ebft b\u1ecb di \u0111\u1ed9ng<\/h3>\n\n\n\n<p>C\u00e1c \u0111\u01a1n v\u1ecb di \u0111\u1ed9ng EM \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o theo c\u00e1ch sao cho c\u00e1c \u0111\u01a1n v\u1ecb nh\u1ecf kh\u00f4ng l\u00e0m gi\u00e1n \u0111o\u1ea1n b\u1ed1 c\u1ee5c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">B\u1ea3ng chuy\u1ec3n \u0111\u1ed5i PX sang EM (K\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n = 16px)<\/h2>\n<\/div><\/div>\n\n<\/div><\/div>\n\n<style>.kb-row-layout-id26_dbfcb9-32 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id26_dbfcb9-32 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id26_dbfcb9-32 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);max-width:var( --global-content-width, 1100px );padding-left:var(--global-content-edge-padding);padding-right:var(--global-content-edge-padding);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id26_dbfcb9-32 > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id26_dbfcb9-32 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id26_dbfcb9-32 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id26_dbfcb9-32 alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top kb-theme-content-width\">\n<style>.kadence-column26_c45c6e-ea > .kt-inside-inner-col,.kadence-column26_c45c6e-ea > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column26_c45c6e-ea > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column26_c45c6e-ea > .kt-inside-inner-col{flex-direction:column;}.kadence-column26_c45c6e-ea > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column26_c45c6e-ea > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column26_c45c6e-ea{position:relative;}@media all and (max-width: 1024px){.kadence-column26_c45c6e-ea > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column26_c45c6e-ea > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column26_c45c6e-ea\"><div class=\"kt-inside-inner-col\">\n <table>\n    <tr><th>PX<\/th><th>EM<\/th><\/tr>\n    <tr><td>10px<\/td><td>0,625em<\/td><\/tr>\n    <tr><td>20px<\/td><td>1,25em<\/td><\/tr>\n    <tr><td>30px<\/td><td>1,875em<\/td><\/tr>\n    <tr><td>40px<\/td><td>2,5em<\/td><\/tr>\n    <tr><td>50px<\/td><td>3.125em<\/td><\/tr>\n    <tr><td>60px<\/td><td>3,75em<\/td><\/tr>\n    <tr><td>70px<\/td><td>4.375em<\/td><\/tr>\n    <tr><td>80px<\/td><td>5em<\/td><\/tr>\n    <tr><td>90px<\/td><td>5,625em<\/td><\/tr>\n    <tr><td>100px<\/td><td>6.25em<\/td><\/tr>\n    <tr><td>110px<\/td><td>6,875em<\/td><\/tr>\n    <tr><td>120px<\/td><td>7,5em<\/td><\/tr>\n    <tr><td>130px<\/td><td>8.125em<\/td><\/tr>\n    <tr><td>140px<\/td><td>8,75em<\/td><\/tr>\n    <tr><td>150px<\/td><td>9.375em<\/td><\/tr>\n    <tr><td>160px<\/td><td>10em<\/td><\/tr>\n    <tr><td>170px<\/td><td>10,625em<\/td><\/tr>\n    <tr><td>180px<\/td><td>11.25em<\/td><\/tr>\n    <tr><td>190px<\/td><td>11.875em<\/td><\/tr>\n    <tr><td>200px<\/td><td>12,5em<\/td><\/tr>\n    <tr><td>210px<\/td><td>13.125em<\/td><\/tr>\n    <tr><td>220px<\/td><td>13,75 ph\u00fat<\/td><\/tr>\n    <tr><td>230px<\/td><td>14.375em<\/td><\/tr>\n    <tr><td>240px<\/td><td>15em<\/td><\/tr>\n    <tr><td>250px<\/td><td>15,625em<\/td><\/tr>\n  <\/table>\n<\/div><\/div>\n\n<\/div><\/div>\n\n<style>.kb-row-layout-id26_019f1f-6f > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id26_019f1f-6f > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id26_019f1f-6f > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);max-width:var( --global-content-width, 1100px );padding-left:var(--global-content-edge-padding);padding-right:var(--global-content-edge-padding);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id26_019f1f-6f > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id26_019f1f-6f > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id26_019f1f-6f > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id26_019f1f-6f alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top kb-theme-content-width\">\n<style>.kadence-column26_0ef82c-15 > .kt-inside-inner-col,.kadence-column26_0ef82c-15 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column26_0ef82c-15 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column26_0ef82c-15 > .kt-inside-inner-col{flex-direction:column;}.kadence-column26_0ef82c-15 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column26_0ef82c-15 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column26_0ef82c-15, .kadence-column26_0ef82c-15 h1, .kadence-column26_0ef82c-15 h2, .kadence-column26_0ef82c-15 h3, .kadence-column26_0ef82c-15 h4, .kadence-column26_0ef82c-15 h5, .kadence-column26_0ef82c-15 h6{color:var(--global-palette9, #ffffff);}.kadence-column26_0ef82c-15 a{color:var(--global-palette7, #EDF2F7);}.kadence-column26_0ef82c-15{position:relative;}@media all and (max-width: 1024px){.kadence-column26_0ef82c-15 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column26_0ef82c-15 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column26_0ef82c-15\"><div class=\"kt-inside-inner-col\">\n<h2 class=\"wp-block-heading\">C\u00e2u tr\u1ea3 l\u1eddi th\u01b0\u1eddng g\u1eb7p (FAQ).<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. 1em c\u00f3 bao nhi\u00eau pixel?<\/h3>\n\n\n\n<p>N\u00f3 d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n c\u1ee7a b\u1ea1n. V\u00ec b\u1ea1n \u0111ang s\u1eed d\u1ee5ng k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n l\u00e0 16px v\u00e0 1em = 16px.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i PX sang EM?<\/h3>\n\n\n\n<p>S\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c:<\/p>\n\n\n\n<pre class=\"wp-block-code has-theme-palette-2-background-color has-background\"><code>em = px \u00f7 k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n<\/code><\/pre>\n\n\n\n<p>V\u00ed d\u1ee5: 24px \u00f7 16 = 1,5em<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. V\u00e0 \u0111i\u1ec1u g\u00ec khi\u1ebfn ch\u00fang ta s\u1eed d\u1ee5ng \u0111\u01a1n v\u1ecb EM khi ch\u00fang ta bi\u1ebft r\u1eb1ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng PX trong CSS?<\/h3>\n\n\n\n<p>C\u00e1c thi\u1ebft b\u1ecb EM \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng, cong v\u00e0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng theo thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n trong tr\u01b0\u1eddng h\u1ee3p ph\u00f3ng to ho\u1eb7c khi ng\u01b0\u1eddi d\u00f9ng s\u1eed d\u1ee5ng lo\u1ea1i m\u00e1y n\u00e0y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. N\u00f3 c\u00f3 s\u1edf h\u1eefu k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef kh\u00e1c kh\u00f4ng?<\/h3>\n\n\n\n<p>C\u00f3! K\u00edch th\u01b0\u1edbc m\u1eb7c \u0111\u1ecbnh l\u00e0 16 px, tuy nhi\u00ean b\u1ea1n c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc m\u1eb7c \u0111\u1ecbnh cho ph\u00f9 h\u1ee3p v\u1edbi thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh, v\u00ed d\u1ee5 k\u00edch th\u01b0\u1edbc c\u01a1 s\u1edf l\u00e0 18 ho\u1eb7c 20.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa EM v\u00e0 REM l\u00e0 g\u00ec?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>EM<\/strong> \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc c\u1ee7a m\u1ed9t <strong>ph\u1ea7n t\u1eed cha<\/strong> ph\u00f4ng ch\u1eef.<\/li>\n\n\n\n<li><strong>REM<\/strong> c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c so s\u00e1nh v\u1edbi k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u1ee7a m\u1ed9t <strong>g\u1ed1c (Html).<\/strong><\/li>\n<\/ul>\n\n\n\n<p>C\u1ea3 hai \u0111\u1ec1u r\u1ea5t nh\u1ea1y v\u00e0 EM ph\u1ea3n \u1ee9ng t\u1ed1t h\u01a1n v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n nh\u00fang.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p>C\u00e1c <strong>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i PX sang EM<\/strong> C\u00f4ng c\u1ee5 n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t nhu c\u1ea7u cao \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf ho\u1eb7c nh\u00e0 ph\u00e1t tri\u1ec3n mu\u1ed1n c\u00f3 m\u1ed9t thi\u1ebft k\u1ebf web \u0111\u00e1p \u1ee9ng \u0111ang ph\u00e1t tri\u1ec3n v\u00e0 h\u1eefu \u00edch. N\u00f3 gi\u00fap b\u1ea1n gi\u1ea3m b\u1edbt c\u00f4ng s\u1ee9c, lo\u1ea1i b\u1ecf vi\u1ec7c ph\u1ecfng \u0111o\u00e1n v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong thi\u1ebft k\u1ebf, khi b\u1ea1n s\u1eed d\u1ee5ng n\u00f3 tr\u00ean c\u00e1c ti\u1ec7n \u00edch kh\u00e1c, thi\u1ebft k\u1ebf s\u1ebd tr\u1edf n\u00ean t\u01b0\u01a1ng t\u1ef1.<\/p>\n\n\n\n<p>\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1ea3n d\u1ecbch ki\u1ec3u ch\u1eef, h\u00e3y s\u1eeda kho\u1ea3ng c\u00e1ch ho\u1eb7c b\u1ea5t k\u1ef3 \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o kh\u00e1c trong b\u1ed1 c\u1ee5c sau khi d\u1ecbch sang EM s\u1ebd ng\u1ee5 \u00fd r\u1eb1ng b\u1ed1 c\u1ee5c c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng bao gi\u1edd kh\u00f4ng s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c ho\u1eb7c kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n<p>L\u00e0m <strong>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i PX sang EM<\/strong> TR\u00caN <a href=\"https:\/\/toolsmate.online\/vi\/\">toolsmate.online<\/a> th\u00f4ng minh h\u01a1n \u2013 nhanh h\u01a1n v\u00e0 \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 trong CSS c\u1ee7a b\u1ea1n!<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-theme-palette-9-color has-text-color has-link-color wp-elements-7c3cc602894766d98e25b4e5fbc2b784\">Th\u00eam chuy\u1ec3n \u0111\u1ed5i PX &amp; EM<\/h2>\n<\/div><\/div>\n\n<\/div><\/div>\n\n<style>.kb-row-layout-id26_36fef8-1b > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id26_36fef8-1b > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id26_36fef8-1b > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);max-width:var( --global-content-width, 1100px );padding-left:var(--global-content-edge-padding);padding-right:var(--global-content-edge-padding);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id26_36fef8-1b > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id26_36fef8-1b > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id26_36fef8-1b > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id26_36fef8-1b alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top kb-theme-content-width\">\n<style>.kadence-column26_dbfd6a-5a > .kt-inside-inner-col{display:flex;}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col{padding-top:var(--global-kb-spacing-md, 2rem);padding-right:var(--global-kb-spacing-md, 2rem);padding-bottom:var(--global-kb-spacing-md, 2rem);padding-left:var(--global-kb-spacing-md, 2rem);}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col,.kadence-column26_dbfd6a-5a > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:flex-start;}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col > *, .kadence-column26_dbfd6a-5a > .kt-inside-inner-col > figure.wp-block-image, .kadence-column26_dbfd6a-5a > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kt-row-column-wrap > .kadence-column26_dbfd6a-5a{align-self:flex-start;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column26_dbfd6a-5a{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column26_dbfd6a-5a > .kt-inside-inner-col{align-items:flex-start;}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col{background-color:var(--global-palette9, #ffffff);}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column26_dbfd6a-5a, .kadence-column26_dbfd6a-5a h1, .kadence-column26_dbfd6a-5a h2, .kadence-column26_dbfd6a-5a h3, .kadence-column26_dbfd6a-5a h4, .kadence-column26_dbfd6a-5a h5, .kadence-column26_dbfd6a-5a h6{color:var(--global-palette2, #2B6CB0);}.kadence-column26_dbfd6a-5a a{color:var(--global-palette2, #2B6CB0);}.kadence-column26_dbfd6a-5a{position:relative;}@media all and (max-width: 1024px){.kt-row-column-wrap > .kadence-column26_dbfd6a-5a{align-self:flex-start;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column26_dbfd6a-5a{align-self:auto;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column26_dbfd6a-5a > .kt-inside-inner-col{align-items:flex-start;}}@media all and (max-width: 1024px){.kadence-column26_dbfd6a-5a > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:flex-start;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column26_dbfd6a-5a > .kt-inside-inner-col > *, .kadence-column26_dbfd6a-5a > .kt-inside-inner-col > figure.wp-block-image, .kadence-column26_dbfd6a-5a > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kt-row-column-wrap > .kadence-column26_dbfd6a-5a{align-self:flex-start;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column26_dbfd6a-5a{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column26_dbfd6a-5a > .kt-inside-inner-col{align-items:flex-start;}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col > *, .kadence-column26_dbfd6a-5a > .kt-inside-inner-col > figure.wp-block-image, .kadence-column26_dbfd6a-5a > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column26_dbfd6a-5a > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column26_dbfd6a-5a kb-section-dir-horizontal\"><div class=\"kt-inside-inner-col\">\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/toolsmate.online\/vi\/px-to-cm-converter\/\">PX sang CM<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/px-to-rem-converter\/\">PX sang REM<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/px-to-vw-converter\/\">PX sang VW<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/px-to-pt-converter\/\">PX sang PT<\/a><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/toolsmate.online\/vi\/px-to-inch-converter\/\">PX \u0110\u1ebeN INCH<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/px-to-pc-converter\/\">PX sang PC<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/px-to-mm-converter\/\">PX sang MM<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/px-to-vh-converter\/\">PX sang VH<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/px-to-percentage-converter\/\">PX sang PH\u1ea6N TR\u0102M<\/a><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/toolsmate.online\/vi\/em-to-pt-converter\/\">EM sang PT<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/em-to-in-converter\/\">EM sang IN<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/em-to-cm-converter\/\">EM sang CM<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/em-to-mm-converter\/\">EM sang MM<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/em-to-percent-converter\/\">EM sang PH\u1ea6N TR\u0102M<\/a><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/toolsmate.online\/vi\/em-to-rem-converter\/\">EM sang REM<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/em-to-pc-converter\/\">EM sang PC<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/em-to-vw-converter\/\">EM sang VW<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/em-to-vh-converter\/\">EM sang VH<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/em-to-px-converter\/\">EM sang PX<\/a><\/li>\n<\/ul>\n<\/div><\/div>\n\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>PX TO EM CONVERTER Pixels (PX) EM Result will be shown here Introduction The key features of the modern web design are that it is flexible and responsive. To make sure that the websites are correctly displayed in the machine of any type, PX to EM Converter can be utilized to have the fixed pixel&#8230;<\/p>","protected":false},"author":3,"featured_media":3879,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"class_list":["post-26","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ultimate Guide to PX to EM Converter: Simplify Your CSS Design<\/title>\n<meta name=\"description\" content=\"Master px to em converter for responsive design. Learn easy conversions, benefits, and tips to improve your CSS workflow.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/toolsmate.online\/vi\/px-to-em-converter\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ultimate Guide to PX to EM Converter: Simplify Your CSS Design\" \/>\n<meta property=\"og:description\" content=\"Master px to em converter for responsive design. Learn easy conversions, benefits, and tips to improve your CSS workflow.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/toolsmate.online\/vi\/px-to-em-converter\/\" \/>\n<meta property=\"og:site_name\" content=\"Tools Mate\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-10T18:02:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/toolsmate.online\/wp-content\/uploads\/2024\/09\/Untitleddesign1.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data1\" content=\"7 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/toolsmate.online\/px-to-em-converter\/\",\"url\":\"https:\/\/toolsmate.online\/px-to-em-converter\/\",\"name\":\"Ultimate Guide to PX to EM Converter: Simplify Your CSS Design\",\"isPartOf\":{\"@id\":\"https:\/\/toolsmate.online\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/toolsmate.online\/px-to-em-converter\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/toolsmate.online\/px-to-em-converter\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/toolsmate.online\/wp-content\/uploads\/2024\/09\/Untitleddesign1.webp\",\"datePublished\":\"2024-09-21T14:40:24+00:00\",\"dateModified\":\"2025-11-10T18:02:39+00:00\",\"description\":\"Master px to em converter for responsive design. Learn easy conversions, benefits, and tips to improve your CSS workflow.\",\"breadcrumb\":{\"@id\":\"https:\/\/toolsmate.online\/px-to-em-converter\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/toolsmate.online\/px-to-em-converter\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/toolsmate.online\/px-to-em-converter\/#primaryimage\",\"url\":\"https:\/\/toolsmate.online\/wp-content\/uploads\/2024\/09\/Untitleddesign1.webp\",\"contentUrl\":\"https:\/\/toolsmate.online\/wp-content\/uploads\/2024\/09\/Untitleddesign1.webp\",\"width\":1200,\"height\":628,\"caption\":\"PX to EM Converter\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/toolsmate.online\/px-to-em-converter\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/toolsmate.online\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"PX to EM converter\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/toolsmate.online\/#website\",\"url\":\"https:\/\/toolsmate.online\/\",\"name\":\"Tools Mate\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/toolsmate.online\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/toolsmate.online\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"vi\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/toolsmate.online\/#organization\",\"name\":\"Tools Mate\",\"url\":\"https:\/\/toolsmate.online\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/toolsmate.online\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/toolsmate.online\/wp-content\/uploads\/2025\/09\/Background-4-1.png\",\"contentUrl\":\"https:\/\/toolsmate.online\/wp-content\/uploads\/2025\/09\/Background-4-1.png\",\"width\":290,\"height\":49,\"caption\":\"Tools Mate\"},\"image\":{\"@id\":\"https:\/\/toolsmate.online\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"H\u01b0\u1edbng d\u1eabn t\u1ed1i \u01b0u v\u1ec1 PX to EM Converter: \u0110\u01a1n gi\u1ea3n h\u00f3a thi\u1ebft k\u1ebf CSS c\u1ee7a b\u1ea1n","description":"L\u00e0m ch\u1ee7 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i px sang em cho thi\u1ebft k\u1ebf \u0111\u00e1p \u1ee9ng. T\u00ecm hi\u1ec3u c\u00e1c chuy\u1ec3n \u0111\u1ed5i d\u1ec5 d\u00e0ng, l\u1ee3i \u00edch v\u00e0 m\u1eb9o \u0111\u1ec3 c\u1ea3i thi\u1ec7n quy tr\u00ecnh l\u00e0m vi\u1ec7c CSS c\u1ee7a b\u1ea1n.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/toolsmate.online\/vi\/px-to-em-converter\/","og_locale":"vi_VN","og_type":"article","og_title":"Ultimate Guide to PX to EM Converter: Simplify Your CSS Design","og_description":"Master px to em converter for responsive design. Learn easy conversions, benefits, and tips to improve your CSS workflow.","og_url":"https:\/\/toolsmate.online\/vi\/px-to-em-converter\/","og_site_name":"Tools Mate","article_modified_time":"2025-11-10T18:02:39+00:00","og_image":[{"width":1200,"height":628,"url":"https:\/\/toolsmate.online\/wp-content\/uploads\/2024\/09\/Untitleddesign1.webp","type":"image\/webp"}],"twitter_card":"summary_large_image","twitter_misc":{"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"7 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/toolsmate.online\/px-to-em-converter\/","url":"https:\/\/toolsmate.online\/px-to-em-converter\/","name":"H\u01b0\u1edbng d\u1eabn t\u1ed1i \u01b0u v\u1ec1 PX to EM Converter: \u0110\u01a1n gi\u1ea3n h\u00f3a thi\u1ebft k\u1ebf CSS c\u1ee7a b\u1ea1n","isPartOf":{"@id":"https:\/\/toolsmate.online\/#website"},"primaryImageOfPage":{"@id":"https:\/\/toolsmate.online\/px-to-em-converter\/#primaryimage"},"image":{"@id":"https:\/\/toolsmate.online\/px-to-em-converter\/#primaryimage"},"thumbnailUrl":"https:\/\/toolsmate.online\/wp-content\/uploads\/2024\/09\/Untitleddesign1.webp","datePublished":"2024-09-21T14:40:24+00:00","dateModified":"2025-11-10T18:02:39+00:00","description":"L\u00e0m ch\u1ee7 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i px sang em cho thi\u1ebft k\u1ebf \u0111\u00e1p \u1ee9ng. T\u00ecm hi\u1ec3u c\u00e1c chuy\u1ec3n \u0111\u1ed5i d\u1ec5 d\u00e0ng, l\u1ee3i \u00edch v\u00e0 m\u1eb9o \u0111\u1ec3 c\u1ea3i thi\u1ec7n quy tr\u00ecnh l\u00e0m vi\u1ec7c CSS c\u1ee7a b\u1ea1n.","breadcrumb":{"@id":"https:\/\/toolsmate.online\/px-to-em-converter\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/toolsmate.online\/px-to-em-converter\/"]}]},{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/toolsmate.online\/px-to-em-converter\/#primaryimage","url":"https:\/\/toolsmate.online\/wp-content\/uploads\/2024\/09\/Untitleddesign1.webp","contentUrl":"https:\/\/toolsmate.online\/wp-content\/uploads\/2024\/09\/Untitleddesign1.webp","width":1200,"height":628,"caption":"PX to EM Converter"},{"@type":"BreadcrumbList","@id":"https:\/\/toolsmate.online\/px-to-em-converter\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/toolsmate.online\/"},{"@type":"ListItem","position":2,"name":"PX to EM converter"}]},{"@type":"WebSite","@id":"https:\/\/toolsmate.online\/#website","url":"https:\/\/toolsmate.online\/","name":"C\u00f4ng c\u1ee5 Mate","description":"","publisher":{"@id":"https:\/\/toolsmate.online\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/toolsmate.online\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"vi"},{"@type":"Organization","@id":"https:\/\/toolsmate.online\/#organization","name":"C\u00f4ng c\u1ee5 Mate","url":"https:\/\/toolsmate.online\/","logo":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/toolsmate.online\/#\/schema\/logo\/image\/","url":"https:\/\/toolsmate.online\/wp-content\/uploads\/2025\/09\/Background-4-1.png","contentUrl":"https:\/\/toolsmate.online\/wp-content\/uploads\/2025\/09\/Background-4-1.png","width":290,"height":49,"caption":"Tools Mate"},"image":{"@id":"https:\/\/toolsmate.online\/#\/schema\/logo\/image\/"}}]}},"taxonomy_info":[],"featured_image_src_large":["https:\/\/toolsmate.online\/wp-content\/uploads\/2024\/09\/Untitleddesign1-1024x536.webp",1024,536,true],"author_info":{"display_name":"ToolsMate","author_link":"https:\/\/toolsmate.online\/vi\/author\/toolsmate\/"},"comment_info":0,"_links":{"self":[{"href":"https:\/\/toolsmate.online\/vi\/wp-json\/wp\/v2\/pages\/26","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/toolsmate.online\/vi\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/toolsmate.online\/vi\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/toolsmate.online\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/toolsmate.online\/vi\/wp-json\/wp\/v2\/comments?post=26"}],"version-history":[{"count":12,"href":"https:\/\/toolsmate.online\/vi\/wp-json\/wp\/v2\/pages\/26\/revisions"}],"predecessor-version":[{"id":7618,"href":"https:\/\/toolsmate.online\/vi\/wp-json\/wp\/v2\/pages\/26\/revisions\/7618"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/toolsmate.online\/vi\/wp-json\/wp\/v2\/media\/3879"}],"wp:attachment":[{"href":"https:\/\/toolsmate.online\/vi\/wp-json\/wp\/v2\/media?parent=26"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}