{"id":597,"date":"2024-10-16T12:48:12","date_gmt":"2024-10-16T12:48:12","guid":{"rendered":"https:\/\/pixelsconverter.online\/?page_id=597"},"modified":"2025-10-29T07:20:59","modified_gmt":"2025-10-29T07:20:59","slug":"cm-to-em-converter","status":"publish","type":"page","link":"https:\/\/toolsmate.online\/vi\/cm-to-em-converter\/","title":{"rendered":"B\u1ed9 chuy\u1ec3n \u0111\u1ed5i CM sang EM"},"content":{"rendered":"<style>.kb-row-layout-id597_1c8db5-ab > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id597_1c8db5-ab > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id597_1c8db5-ab > .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-id597_1c8db5-ab > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id597_1c8db5-ab > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id597_1c8db5-ab > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id597_1c8db5-ab 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-column597_130e24-3e > .kt-inside-inner-col,.kadence-column597_130e24-3e > .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-column597_130e24-3e > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column597_130e24-3e > .kt-inside-inner-col{flex-direction:column;}.kadence-column597_130e24-3e > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column597_130e24-3e > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column597_130e24-3e{position:relative;}@media all and (max-width: 1024px){.kadence-column597_130e24-3e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column597_130e24-3e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column597_130e24-3e\"><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-a50c3ec266cfc400c472667b5dfb2b99\">B\u1ed8 CHUY\u1ec2N \u0110\u1ed4I CM SANG EM<\/h1>\n<\/div><\/div>\n\n\n<style>.kadence-column597_d09d44-09 > .kt-inside-inner-col,.kadence-column597_d09d44-09 > .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-column597_d09d44-09 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column597_d09d44-09 > .kt-inside-inner-col{flex-direction:column;}.kadence-column597_d09d44-09 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column597_d09d44-09 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column597_d09d44-09{position:relative;}@media all and (max-width: 1024px){.kadence-column597_d09d44-09 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column597_d09d44-09 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column597_d09d44-09\"><div class=\"kt-inside-inner-col\">\n<div class=\"container\">\n        <div class=\"input-group\">\n            <label for=\"cmInput\">Centimet (CM)<\/label>\n            <input type=\"number\" id=\"cmInput\" placeholder=\"Nh\u1eadp Centimet (CM)\" value=\"1\">\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            <label for=\"emSizeInput\">K\u00edch th\u01b0\u1edbc EM <\/label>\n            <input type=\"number\" id=\"emSizeInput\" placeholder=\"Nh\u1eadp K\u00edch th\u01b0\u1edbc EM\" value=\"16\">\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 cmInput = document.getElementById('cmInput');\n        const emSizeInput = document.getElementById('emSizeInput');\n        const resultDisplay = document.getElementById('resultDisplay');\n        const copyIcon = document.createElement('span');\n\n        \/\/ Default values\n        const DEFAULT_CM = 1;     \/\/ Default Centimeters value\n        const DEFAULT_EM_SIZE = 16; \/\/ Default EM Size in pixels\n        const PPI = 96;          \/\/ Default Pixels per Inch (PPI)\n\n        \/\/ Function to convert Centimeters (CM) to EM\n        function convertCmToEm() {\n            const cmValue = parseFloat(cmInput.value) || DEFAULT_CM;\n            const emSize = parseFloat(emSizeInput.value) || DEFAULT_EM_SIZE;\n\n            if (!isNaN(cmValue) && !isNaN(emSize) && emSize > 0) {\n                \/\/ Convert CM to Pixels\n                const pxValue = (cmValue \/ 2.54) * PPI;\n\n                \/\/ Convert Pixels to EM\n                const emValue = pxValue \/ emSize;\n\n                \/\/ Display result\n                const displayValue = emValue % 1 === 0 ? emValue : emValue.toFixed(2); \/\/ up to 2 decimal places\n                resultDisplay.textContent = displayValue + ' em';\n            } else {\n                resultDisplay.textContent = 'Result will be shown here';\n            }\n            resultDisplay.appendChild(copyIcon);\n        }\n\n        \/\/ Add event listeners to input fields\n        cmInput.addEventListener('input', convertCmToEm);\n        emSizeInput.addEventListener('input', convertCmToEm);\n\n        \/\/ Set initial conversion on page load with default values\n        cmInput.value = DEFAULT_CM;  \/\/ Set default Centimeters value\n        emSizeInput.value = DEFAULT_EM_SIZE;  \/\/ Set default EM size\n        convertCmToEm();\n\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';\n        copyIcon.style.verticalAlign = 'middle';\n        copyIcon.style.transition = 'transform 0.3s ease';\n\n        \/\/ Copy to clipboard functionality\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();\n                navigator.clipboard.writeText(valueToCopy).then(() => {\n                    copyIcon.style.transform = 'scale(1.2)';\n                    setTimeout(() => {\n                        copyIcon.style.transform = 'scale(1)';\n                    }, 200);\n                }).catch(err => {\n                    console.error('Failed to copy text:', err);\n                });\n            }\n        });\n        copyIcon.classList.add('copy-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-cm-converter\/'; \/\/ Replace with the desired page link\n});\n\n    <\/script>\n<\/div><\/div>\n\n\n<style>.kadence-column597_8fea43-0a > .kt-inside-inner-col,.kadence-column597_8fea43-0a > .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-column597_8fea43-0a > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column597_8fea43-0a > .kt-inside-inner-col{flex-direction:column;}.kadence-column597_8fea43-0a > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column597_8fea43-0a > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column597_8fea43-0a, .kadence-column597_8fea43-0a h1, .kadence-column597_8fea43-0a h2, .kadence-column597_8fea43-0a h3, .kadence-column597_8fea43-0a h4, .kadence-column597_8fea43-0a h5, .kadence-column597_8fea43-0a h6{color:var(--global-palette9, #ffffff);}.kadence-column597_8fea43-0a a{color:var(--global-palette7, #EDF2F7);}.kadence-column597_8fea43-0a{position:relative;}@media all and (max-width: 1024px){.kadence-column597_8fea43-0a > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column597_8fea43-0a > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column597_8fea43-0a\"><div class=\"kt-inside-inner-col\">\n<h2 class=\"wp-block-heading\">B\u1ed9 chuy\u1ec3n \u0111\u1ed5i CM sang EM - Thi\u1ebft k\u1ebf web \u0111\u00e1p \u1ee9ng t\u1ed1i thi\u1ec3u.<\/h2>\n\n\n\n<p>Hai \u0111\u1eb7c \u0111i\u1ec3m \u0111i\u1ec3n h\u00ecnh c\u1ee7a ng\u00e0nh ph\u00e1t tri\u1ec3n web hi\u1ec7n \u0111\u1ea1i l\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh linh ho\u1ea1t. Centimet (cm) l\u00e0 \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng v\u1eadt l\u00fd tuy\u1ec7t v\u1eddi, nh\u01b0ng l\u1ea1i kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi b\u1ed1 c\u1ee5c responsive, v\u1ed1n c\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh tr\u00ean nhi\u1ec1u m\u00e0n h\u00ecnh. V\u00e0 \u0111\u00f3 ch\u00ednh l\u00e0 l\u00fac \u0111\u01a1n v\u1ecb EM ph\u00e1t huy t\u00e1c d\u1ee5ng, mang \u0111\u1ebfn thi\u1ebft k\u1ebf CSS linh ho\u1ea1t v\u00e0 c\u00f3 t\u1ef7 l\u1ec7.<\/p>\n\n\n\n<p>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i CM sang EM r\u1ea5t d\u1ec5 d\u00e0ng v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ch\u1ec9 trong v\u00e0i gi\u00e2y gi\u1eefa hai \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng n\u00e0y. C\u00f4ng c\u1ee5 n\u00e0y c\u0169ng cho ph\u00e9p b\u1ea1n \u0111i\u1ec1u ch\u1ec9nh l\u1ec1, ph\u00f4ng ch\u1eef ho\u1eb7c k\u00edch th\u01b0\u1edbc ph\u1ea7n t\u1eed, nh\u01b0ng d\u00f9 theo c\u00e1ch n\u00e0o, \u0111\u00e2y c\u0169ng l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 gi\u00fap b\u1ea1n t\u1ea1o ra m\u1ed9t thi\u1ebft k\u1ebf nh\u1ea5t qu\u00e1n, n\u0103ng \u0111\u1ed9ng, h\u1ed7 tr\u1ee3 ho\u00e0n h\u1ea3o m\u1ecdi thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">B\u1ed9 chuy\u1ec3n \u0111\u1ed5i CM sang EM l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>C\u00f4ng c\u1ee5 chuy\u1ec3n \u0111\u1ed5i Centimet sang EM l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 tr\u1ef1c tuy\u1ebfn \u0111\u01a1n gi\u1ea3n nh\u01b0ng m\u1ea1nh m\u1ebd, c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i ngay l\u1eadp t\u1ee9c b\u1ea5t k\u1ef3 gi\u00e1 tr\u1ecb centimet (cm) n\u00e0o sang \u0111\u01a1n v\u1ecb EM.<\/p>\n\n\n\n<p>Centimet l\u00e0 \u0111\u01a1n v\u1ecb tuy\u1ec7t \u0111\u1ed1i trong thi\u1ebft k\u1ebf web, ngh\u0129a l\u00e0 n\u00f3 kh\u00f4ng thay \u0111\u1ed5i theo k\u00edch th\u01b0\u1edbc m\u00e0n h\u00ecnh ho\u1eb7c m\u1ee9c \u0111\u1ed9 thu ph\u00f3ng. M\u1eb7t kh\u00e1c, EM l\u00e0 \u0111\u01a1n v\u1ecb t\u01b0\u01a1ng \u0111\u1ed1i v\u00e0 \u0111\u1ed9 l\u1edbn c\u1ee7a ch\u00fang \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u1ee7a ph\u1ea7n t\u1eed cha.<\/p>\n\n\n\n<p>Nh\u1edd b\u01b0\u1edbc nh\u1ea3y v\u1ecdt n\u00e0y m\u00e0 EM c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u1ea1o ra c\u00e1c b\u1ed1 c\u1ee5c c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, ph\u1ea3n \u1ee9ng l\u00fd t\u01b0\u1edfng tr\u00ean m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n, m\u00e1y t\u00ednh b\u1ea3ng v\u00e0 m\u00e0n h\u00ecnh di \u0111\u1ed9ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u00e1t tri\u1ec3n s\u1ef1 kh\u00e1c bi\u1ec7t: CM so v\u1edbi EM.<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Centimet (CM) trong Thi\u1ebft k\u1ebf Web<\/h3>\n\n\n\n<p>H\u1ea7u h\u1ebft c\u00e1c b\u1ed1 c\u1ee5c in \u1ea5n ho\u1eb7c d\u1ef1 \u00e1n in \u1ea5n d\u1ef1a tr\u00ean centimet m\u00e0 k\u00edch th\u01b0\u1edbc th\u1ef1c b\u1ecb \u1ea3nh h\u01b0\u1edfng \u0111\u1ec1u \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 cm-bearing (v\u00ed d\u1ee5: thi\u1ebft k\u1ebf c\u1ee7a th\u1ee9 g\u00ec \u0111\u00f3 c\u1ea7n in, v\u00ed d\u1ee5 nh\u01b0 ch\u1ee9ng ch\u1ec9 ho\u1eb7c b\u00e1o c\u00e1o). Tuy nhi\u00ean, khi \u00e1p d\u1ee5ng cho m\u00e0n h\u00ecnh, gi\u00e1 tr\u1ecb c\u1ee7a CM v\u1eabn gi\u1eef nguy\u00ean b\u1ea5t k\u1ec3 c\u00e0i \u0111\u1eb7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng hay \u0111\u1ed9 ph\u00e2n gi\u1ea3i c\u1ee7a thi\u1ebft b\u1ecb, do \u0111\u00f3 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft k\u1ebf web linh ho\u1ea1t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u01a1n v\u1ecb EM: B\u00ed m\u1eadt c\u1ee7a ki\u1ec3u ch\u1eef ph\u1ea3n h\u1ed3i.<\/h3>\n\n\n\n<p>EM ph\u1ee5 thu\u1ed9c v\u00e0o ph\u00f4ng ch\u1eef c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng cha. V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Trong tr\u01b0\u1eddng h\u1ee3p ph\u00f4ng ch\u1eef c\u01a1 s\u1edf l\u00e0 16px th\u00ec 1em = 16px.<\/li>\n<\/ul>\n\n\n\n<p>B\u1ea5t c\u1ee9 khi n\u00e0o k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u1ee7a ph\u1ea7n t\u1eed cha \u0111\u01b0\u1ee3c thay \u0111\u1ed5i th\u00e0nh 20px, th\u00ec 1em l\u00e0 20px.<\/p>\n\n\n\n<p>Thu\u1ed9c t\u00ednh t\u01b0\u01a1ng \u0111\u1ed1i n\u00e0y cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh t\u1ef7 l\u1ec7 \u0111\u01a1n v\u1ecb EM theo m\u1eb7c \u0111\u1ecbnh, gi\u1eef nguy\u00ean t\u1ef7 l\u1ec7 gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb v\u00e0 \u0111\u1ed9 ph\u00e2n gi\u1ea3i. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao h\u1ea7u h\u1ebft c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n s\u1eed d\u1ee5ng EM \u0111\u1ec1u th\u00edch \u1ee9ng t\u1ed1t h\u01a1n v\u1edbi ki\u1ec3u ch\u1eef, kh\u00f4ng gian v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 b\u1ed1 c\u1ee5c trong thi\u1ebft k\u1ebf \u0111\u00e1p \u1ee9ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao ph\u1ea3i chuy\u1ec3n \u0111\u1ed5i CM sang EM?<\/h2>\n\n\n\n<p>Khi chuy\u1ec3n \u0111\u1ed5i CM sang EM, tr\u00ean th\u1ef1c t\u1ebf b\u1ea1n \u0111\u00e3 l\u00e0m cho t\u00e1c ph\u1ea9m c\u1ee7a m\u00ecnh tr\u1edf n\u00ean \u0111\u1ed9ng. C\u00e1c gi\u00e1 tr\u1ecb d\u1ef1a tr\u00ean EM kh\u00f4ng c\u1ee9ng nh\u1eafc theo m\u1ed9t k\u00edch th\u01b0\u1edbc c\u1ee5 th\u1ec3, ng\u01b0\u1ee3c l\u1ea1i, ch\u00fang ph\u1ea3n h\u1ed3i \u0111\u1ed9ng theo s\u1edf th\u00edch c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, c\u00e0i \u0111\u1eb7t v\u1ec1 kh\u1ea3 n\u0103ng truy c\u1eadp v\u00e0 k\u00edch th\u01b0\u1edbc m\u00e0n h\u00ecnh.<\/p>\n\n\n\n<p><strong>N\u00f3i c\u00e1ch kh\u00e1c, EM = CM x:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kho\u1ea3ng c\u00e1ch v\u00e0 t\u1ef7 l\u1ec7 li\u00ean t\u1ee5c.<\/li>\n\n\n\n<li>T\u0103ng danh ti\u1ebfng sau m\u1ed7i l\u1ea7n tri\u1ec3n l\u00e3m.<\/li>\n\n\n\n<li>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng li\u00ean t\u1ee5c.<\/li>\n<\/ul>\n\n\n\n<p>C\u00e1c \u0111\u01a1n v\u1ecb EM c\u00f3 th\u1ec3 l\u00e0m m\u1ecbn thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n v\u00e0 hi\u1ec3n th\u1ecb v\u0103n b\u1ea3n, ph\u1ea7n \u0111\u1ec7m ho\u1eb7c l\u1ec1, gi\u00fap thi\u1ebft k\u1ebf tr\u1edf n\u00ean m\u01b0\u1ee3t m\u00e0 v\u00e0 hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00f4ng th\u1ee9c chuy\u1ec3n \u0111\u1ed5i CM sang EM<\/h2>\n\n\n\n<p>C\u1ea3m th\u1ea5y c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n th\u1ee7 c\u00f4ng, c\u00f4ng th\u1ee9c chuy\u1ec3n \u0111\u1ed5i n\u00e0y r\u1ea5t \u0111\u01a1n gi\u1ea3n:<\/p>\n\n\n\n<pre class=\"wp-block-code has-theme-palette-2-background-color has-background\"><code>EM = CM \u00d7 37.7952755906\u200b \/ K\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n (t\u00ednh b\u1eb1ng px)<\/code><\/pre>\n\n\n\n<p><strong>V\u00ed d\u1ee5 t\u00ednh to\u00e1n:<\/strong><\/p>\n\n\n\n<p>H\u00e3y l\u1ea5y t\u00ecnh hu\u1ed1ng sau \u0111\u00e2y l\u00e0m v\u00ed d\u1ee5: B\u1ea1n ph\u1ea3i chuy\u1ec3n \u0111\u1ed5i 1 cm sang EM v\u00e0 k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n l\u00e0 16px.<\/p>\n\n\n\n<pre class=\"wp-block-code has-theme-palette-2-background-color has-background\"><code>EM = 1\u00d737,7952755906\/16 \u200b= 2,36em<\/code><\/pre>\n\n\n\n<p>Do \u0111\u00f3, 1 cm t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 2,36 em khi b\u1ea1n s\u1eed d\u1ee5ng ph\u00f4ng ch\u1eef c\u01a1 s\u1edf 16px.<\/p>\n\n\n\n<p>K\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh theo c\u1ea5u h\u00ecnh thi\u1ebft k\u1ebf c\u1ee7a d\u1ef1 \u00e1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">B\u1ea3ng chuy\u1ec3n \u0111\u1ed5i EM-CM (k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n l\u00e0 16px)<\/h2>\n<\/div><\/div>\n\n\n<style>.kadence-column597_6fd755-b6 > .kt-inside-inner-col,.kadence-column597_6fd755-b6 > .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-column597_6fd755-b6 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column597_6fd755-b6 > .kt-inside-inner-col{flex-direction:column;}.kadence-column597_6fd755-b6 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column597_6fd755-b6 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column597_6fd755-b6{position:relative;}@media all and (max-width: 1024px){.kadence-column597_6fd755-b6 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column597_6fd755-b6 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column597_6fd755-b6\"><div class=\"kt-inside-inner-col\">\n<table border=\"1\" cellpadding=\"10\" cellspacing=\"0\">\n    <thead>\n        <tr>\n            <th>Centimet (CM)<\/th>\n            <th>EM (K\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n = 16px)<\/th>\n        <\/tr>\n    <\/thead>\n    <tbody>\n        <tr>\n            <td>0,01 cm<\/td>\n            <td>0,0236 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,02 cm<\/td>\n            <td>0,0472 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,03 cm<\/td>\n            <td>0,0708 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,04 cm<\/td>\n            <td>0,0944 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,05 cm<\/td>\n            <td>0,118 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,06 cm<\/td>\n            <td>0,1416 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,07 cm<\/td>\n            <td>0,1652 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,08 cm<\/td>\n            <td>0,1888 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,09 cm<\/td>\n            <td>0,2124 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,1 cm<\/td>\n            <td>0,236 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,2 cm<\/td>\n            <td>0,472 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,3 cm<\/td>\n            <td>0,708 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,4 cm<\/td>\n            <td>0,944 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,5 cm<\/td>\n            <td>1,18 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,6 cm<\/td>\n            <td>1.416 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,7 cm<\/td>\n            <td>1.652 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,8 cm<\/td>\n            <td>1.888 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>0,9 cm<\/td>\n            <td>2.124 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>1cm<\/td>\n            <td>2,36 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>2CM<\/td>\n            <td>4,72 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>3cm<\/td>\n            <td>7.08 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>4CM<\/td>\n            <td>9,44 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>5cm<\/td>\n            <td>11,8 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>6CM<\/td>\n            <td>14.16 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>7CM<\/td>\n            <td>16,52 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>8CM<\/td>\n            <td>18,88 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>9CM<\/td>\n            <td>21,24 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>10CM<\/td>\n            <td>23,6 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>11 cm<\/td>\n            <td>25,96 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>12 cm<\/td>\n            <td>28,32 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>13 cm<\/td>\n            <td>30,68 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>14 cm<\/td>\n            <td>33,04 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>15CM<\/td>\n            <td>35,4 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>16 cm<\/td>\n            <td>37,76 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>17 cm<\/td>\n            <td>40,12 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>18 cm<\/td>\n            <td>42,48 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>19 cm<\/td>\n            <td>44,84 EM<\/td>\n        <\/tr>\n        <tr>\n            <td>20CM<\/td>\n            <td>47,2 EM<\/td>\n        <\/tr>\n    <\/tbody>\n<\/table>\n<\/div><\/div>\n\n\n<style>.kadence-column597_4a0b34-89 > .kt-inside-inner-col,.kadence-column597_4a0b34-89 > .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-column597_4a0b34-89 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column597_4a0b34-89 > .kt-inside-inner-col{flex-direction:column;}.kadence-column597_4a0b34-89 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column597_4a0b34-89 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column597_4a0b34-89, .kadence-column597_4a0b34-89 h1, .kadence-column597_4a0b34-89 h2, .kadence-column597_4a0b34-89 h3, .kadence-column597_4a0b34-89 h4, .kadence-column597_4a0b34-89 h5, .kadence-column597_4a0b34-89 h6{color:var(--global-palette9, #ffffff);}.kadence-column597_4a0b34-89 a{color:var(--global-palette7, #EDF2F7);}.kadence-column597_4a0b34-89{position:relative;}@media all and (max-width: 1024px){.kadence-column597_4a0b34-89 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column597_4a0b34-89 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column597_4a0b34-89\"><div class=\"kt-inside-inner-col\">\n<h2 class=\"wp-block-heading\">B\u1ed9 chuy\u1ec3n \u0111\u1ed5i CM sang EM (T\u1eebng b\u01b0\u1edbc).<\/h2>\n\n\n\n<p>C\u00f4ng c\u1ee5 chuy\u1ec3n \u0111\u1ed5i CM sang EM c\u1ee7a ch\u00fang t\u00f4i tr\u00ean trang web mate.online r\u1ea5t nhanh ch\u00f3ng, \u0111\u01a1n gi\u1ea3n v\u00e0 ch\u00ednh x\u00e1c. H\u00e3y l\u00e0m theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nh\u1eadp gi\u00e1 tr\u1ecb centimet m\u00e0 b\u1ea1n mu\u1ed1n chuy\u1ec3n \u0111\u1ed5i.<\/li>\n\n\n\n<li>V\u00ed d\u1ee5: 2,5 cm<\/li>\n\n\n\n<li>K\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef t\u1ed1i thi\u1ec3u (t\u00ednh b\u1eb1ng pixel).<\/li>\n\n\n\n<li>K\u00edch th\u01b0\u1edbc m\u1eb7c \u0111\u1ecbnh l\u00e0 16px nh\u01b0ng b\u1ea1n c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u00f9y theo d\u1ef1 \u00e1n c\u1ee7a m\u00ecnh.<\/li>\n\n\n\n<li>Nh\u1eadp EM c\u1ee7a b\u1ea1n \u0111\u1ec3 nh\u1eadn EM ngay l\u1eadp t\u1ee9c.<\/li>\n\n\n\n<li>Sao ch\u00e9p v\u00e0 d\u00e1n k\u1ebft qu\u1ea3 r\u1ed3i ch\u00e8n v\u00e0o CSS c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n\n\n\n<p>V\u1eady l\u00e0 xong! Khi b\u1ea1n t\u00ecm ra gi\u00e1 tr\u1ecb EM ho\u00e0n h\u1ea3o, th\u00ec b\u1ea1n s\u1ebd c\u1ea7n ph\u1ea3i l\u00e0m cho thi\u1ebft k\u1ebf c\u1ee7a m\u00ecnh ph\u1ea3n h\u1ed3i nhanh h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00ed d\u1ee5 th\u1ef1c t\u1ebf trong CSS<\/h2>\n\n\n\n<p>\u0110\u1ec3 minh h\u1ecda \u0111i\u1ec1u n\u00e0y, ch\u00fang ta s\u1ebd gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng b\u1ea1n mu\u1ed1n t\u1ea1o m\u1ed9t b\u1ed1 c\u1ee5c v\u1edbi l\u1ec1 2 cm b\u1eb1ng \u0111\u01a1n v\u1ecb CM. B\u1ed1 c\u1ee5c \u0111\u01a1n v\u1ecb CM kh\u00f4ng linh ho\u1ea1t, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u00ean thi\u1ebft b\u1ecb di \u0111\u1ed9ng. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao n\u00ean chuy\u1ec3n \u0111\u1ed5i sang EM \u0111\u1ec3 linh ho\u1ea1t h\u01a1n:<\/p>\n\n\n\n<pre class=\"wp-block-code has-theme-palette-2-background-color has-background\"><code>\/* Tr\u01b0\u1edbc khi chuy\u1ec3n \u0111\u1ed5i *\/ body { margin: 2cm; } \/* Chuy\u1ec3n \u0111\u1ed5i sang c\u1ee1 ch\u1eef c\u01a1 b\u1ea3n (16px) *\/ body { margin: 4.72em; \/* T\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 2 cm *\/ }<\/code><\/pre>\n\n\n\n<p>L\u1ec1 hi\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ee1 theo k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n - \u0111i\u1ec1u n\u00e0y s\u1ebd gi\u00fap m\u00e0n h\u00ecnh v\u00e0 thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 co gi\u00e3n li\u1ec1n m\u1ea1ch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1ee3i \u00edch c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i CM 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>V\u00e0 sau \u0111\u00f3 l\u00e0 qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i th\u1ee7 c\u00f4ng, ch\u1eadm v\u00e0 d\u1ec5 x\u1ea3y ra l\u1ed7i l\u00e0m tr\u00f2n. B\u1ed9 chuy\u1ec3n \u0111\u1ed5i c\u1ee7a ch\u00fang t\u00f4i ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 cao \u0111\u1ec3 cung c\u1ea5p k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c ch\u1ec9 trong v\u00e0i gi\u00e2y, do \u0111\u00f3 b\u1ea1n c\u00f3 th\u1ec3 t\u1eadp trung v\u00e0o vi\u1ec7c thi\u1ebft k\u1ebf.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u0110\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c<\/h3>\n\n\n\n<p>T\u00ednh to\u00e1n chuy\u1ec3n \u0111\u1ed5i ch\u00ednh x\u00e1c m\u1ecdi l\u00fac v\u00e0 b\u1ea1n s\u1ebd \u0111\u1ea3m b\u1ea3o r\u1eb1ng ph\u00e9p \u0111o b\u1ed1 c\u1ee5c n\u00e0y gi\u1ed1ng nhau \u1edf m\u1ecdi n\u01a1i tr\u00ean CSS c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ph\u1ea3n h\u1ed3i<\/h3>\n\n\n\n<p>Thi\u1ebft b\u1ecb EM cho ph\u00e9p thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n t\u1ef1 \u0111\u1ed9ng t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec1u thi\u1ebft b\u1ecb kh\u00e1c nhau - c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng \u0111\u1ecdc v\u00e0 tr\u1ea3i nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn<\/h3>\n\n\n\n<p>B\u1ed1 c\u1ee5c d\u1ef1a tr\u00ean EM c\u0169ng cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng thi\u1ebft l\u1eadp t\u00f9y ch\u1ecdn ph\u00f4ng ch\u1eef sao cho nh\u1eefng ng\u01b0\u1eddi ph\u00f3ng to ph\u00f4ng ch\u1eef tr\u00ean tr\u00ecnh duy\u1ec7t c\u1ee7a h\u1ecd c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111i\u1ec1u h\u01b0\u1edbng trang web.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. L\u00fd t\u01b0\u1edfng cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 nh\u00e0 thi\u1ebft k\u1ebf.<\/h3>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 l\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n web, nh\u00e0 thi\u1ebft k\u1ebf UI\/UX ho\u1eb7c sinh vi\u00ean h\u1ecdc CSS, nh\u01b0ng kh\u00f4ng th\u1ec3 s\u1ed1ng thi\u1ebfu b\u1ed9 chuy\u1ec3n \u0111\u1ed5i n\u00e0y \u0111\u1ec3 bi\u1ebft thi\u1ebft k\u1ebf \u0111\u00e1p \u1ee9ng l\u00e0 g\u00ec.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ki\u1ec3u ch\u1eef:<\/strong> Ki\u1ec3u ch\u1eef T\u1ef7 l\u1ec7 ph\u00f4ng ch\u1eef theo CM \u0111\u1ebfn EM.<\/li>\n\n\n\n<li><strong>\u0110\u1ec7m v\u00e0 l\u1ec1:<\/strong> \u0110\u1ea1t \u0111\u01b0\u1ee3c kho\u1ea3ng c\u00e1ch c\u00e2n x\u1ee9ng gi\u1eefa c\u00e1c b\u1ed1 c\u1ee5c.<\/li>\n\n\n\n<li><strong>Th\u00e0nh ph\u1ea7n \u0111\u00e1p \u1ee9ng: <\/strong>Ph\u00e1t tri\u1ec3n c\u00e1c th\u00e0nh ph\u1ea7n ch\u1ea5t l\u1ecfng c\u00f3 th\u1ec3 di chuy\u1ec3n tr\u00ean m\u00e0n h\u00ecnh.<\/li>\n\n\n\n<li><strong>Chuy\u1ec3n \u0111\u1ed5i t\u1eeb b\u1ea3n in sang web:<\/strong> Bi\u1ebfn s\u1ed1 in th\u00e0nh s\u1ed1 tr\u1ef1c tuy\u1ebfn \u0111\u1ed9ng.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Nh\u1eefng c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 chuy\u1ec3n \u0111\u1ed5i CM sang EM.<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. T\u1eeb vi\u1ebft t\u1eaft EM trong thi\u1ebft k\u1ebf web l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p>EM l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb \u0111\u1ecbnh d\u1ea1ng t\u01b0\u01a1ng \u0111\u1ed1i trong CSS. N\u00f3 d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u1ee7a ph\u1ea7n t\u1eed cha, cho ph\u00e9p c\u00e1c ph\u1ea7n t\u1eed web c\u00f3 t\u1ef7 l\u1ec7 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. T\u1ea1i sao ph\u1ea3i chuy\u1ec3n \u0111\u1ed5i CM sang EM?<\/h3>\n\n\n\n<p>Cho ph\u00e9p CM tr\u1edf th\u00e0nh thi\u1ebft k\u1ebf EM s\u1ebd gi\u00fap thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n ph\u1ea3n h\u1ed3i nhanh, c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec1u lo\u1ea1i thi\u1ebft b\u1ecb v\u00e0 \u0111\u1ed9 ph\u00e2n gi\u1ea3i m\u00e0n h\u00ecnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. K\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef m\u1eb7c \u0111\u1ecbnh trong tr\u00ecnh duy\u1ec7t l\u00e0 bao nhi\u00eau?<\/h3>\n\n\n\n<p>H\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t \u0111\u1ec1u s\u1eed d\u1ee5ng c\u1ee1 ch\u1eef 16px l\u00e0m ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n. Tuy nhi\u00ean, b\u1ea1n c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh n\u00f3 trong CSS b\u1eb1ng thu\u1ed9c t\u00ednh font-size.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. T\u00f4i c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i EM tr\u1edf l\u1ea1i CM kh\u00f4ng?<\/h3>\n\n\n\n<p>C\u00f4ng th\u1ee9c sau \u0111\u00e2y ng\u01b0\u1ee3c l\u1ea1i v\u1edbi c\u00f4ng th\u1ee9c tr\u00ean: c\u00f3.<\/p>\n\n\n\n<pre class=\"wp-block-code has-theme-palette-2-background-color has-background\"><code>CM = EM \u00d7 K\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 s\u1edf (px) \/ 37,7952755906\u200b \u200b<\/code><\/pre>\n\n\n\n<p>Ho\u1eb7c ch\u1ec9 c\u1ea7n k\u00e9o c\u00f4ng c\u1ee5 chuy\u1ec3n \u0111\u1ed5i EM sang CM tr\u00ean toolsmate.online.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Ph\u1ea3n \u1ee9ng nhanh h\u01a1n PX ho\u1eb7c CM, EM c\u00f3 ph\u1ea3n \u1ee9ng nhanh h\u01a1n kh\u00f4ng?<\/h3>\n\n\n\n<p>C\u00f3. EM c\u00f3 t\u00ednh t\u01b0\u01a1ng \u0111\u1ed1i, t\u1ee9c l\u00e0 n\u00f3 t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n, do \u0111\u00f3 l\u00fd t\u01b0\u1edfng \u0111\u1ec3 \u00e1p d\u1ee5ng trong thi\u1ebft k\u1ebf \u0111\u00e1p \u1ee9ng v\u00e0 d\u1ec5 ti\u1ebfp c\u1eadn so v\u1edbi c\u00e1c \u0111\u01a1n v\u1ecb c\u1ed1 \u0111\u1ecbnh l\u00e0 pixel (px) ho\u1eb7c centimet (cm).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p>C\u00f4ng c\u1ee5 chuy\u1ec3n \u0111\u1ed5i CM sang EM l\u00e0 m\u1ed9t tr\u1ee3 th\u1ee7 \u0111\u1eafc l\u1ef1c cho c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf web mong mu\u1ed1n t\u1ea1o ra c\u00e1c thi\u1ebft k\u1ebf \u0111\u00e1p \u1ee9ng, d\u1ec5 ti\u1ebfp c\u1eadn v\u00e0 linh ho\u1ea1t. Sau khi chuy\u1ec3n \u0111\u1ed5i cm sang EM, b\u1ea1n ch\u1eafc ch\u1eafn \u0111\u00e3 t\u1ea1o ra m\u1ed9t trang web \u0111\u1ed3ng nh\u1ea5t v\u00e0 d\u1ec5 s\u1eed d\u1ee5ng tr\u00ean m\u1ecdi thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<p>TR\u00caN <strong>toolsmate.online,<\/strong> B\u1ed9 chuy\u1ec3n \u0111\u1ed5i tr\u1ef1c tuy\u1ebfn n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 lo\u1ea1i b\u1ecf m\u1ecdi ph\u1ecfng \u0111o\u00e1n v\u00e0 l\u00e3ng ph\u00ed th\u1eddi gian, cho ph\u00e9p qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf CSS di\u1ec5n ra su\u00f4n s\u1ebb h\u01a1n v\u00e0 th\u00f4ng minh h\u01a1n. B\u00ed quy\u1ebft chuy\u1ec3n \u0111\u1ed5i CM sang EM ch\u00ednh l\u00e0 b\u00ed quy\u1ebft c\u1ee7a thi\u1ebft k\u1ebf web chuy\u00ean nghi\u1ec7p v\u00e0 \u0111\u00e1p \u1ee9ng, d\u00f9 l\u00e0 v\u1ec1 ph\u00f4ng ch\u1eef, l\u1ec1 hay b\u1ed1 c\u1ee5c m\u00e0 b\u1ea1n th\u00eam v\u00e0o hay gi\u1ea3m b\u1edbt.<\/p>\n<\/div><\/div>\n\n\n<style>.kadence-column597_c220e4-a1 > .kt-inside-inner-col{padding-top:var(--global-kb-spacing-xs, 1rem);padding-right:var(--global-kb-spacing-xs, 1rem);padding-bottom:var(--global-kb-spacing-xs, 1rem);padding-left:var(--global-kb-spacing-xs, 1rem);}.kadence-column597_c220e4-a1 > .kt-inside-inner-col,.kadence-column597_c220e4-a1 > .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-column597_c220e4-a1 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column597_c220e4-a1 > .kt-inside-inner-col{flex-direction:column;}.kadence-column597_c220e4-a1 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column597_c220e4-a1 > .kt-inside-inner-col{background-color:var(--global-palette9, #ffffff);}.kadence-column597_c220e4-a1 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column597_c220e4-a1{position:relative;}@media all and (max-width: 1024px){.kadence-column597_c220e4-a1 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column597_c220e4-a1 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column597_c220e4-a1\"><div class=\"kt-inside-inner-col\">\n<h2 class=\"wp-block-heading has-theme-palette-2-color has-text-color has-link-color wp-elements-88d88ed3359035e9bb6aecd15e0994a7\">Th\u00eam nhi\u1ec1u chuy\u1ec3n \u0111\u1ed5i CM &amp; EM<\/h2>\n<\/div><\/div>\n\n\n<style>.kadence-column597_57cf3b-8c > .kt-inside-inner-col{display:flex;}.kadence-column597_57cf3b-8c > .kt-inside-inner-col{padding-top:var(--global-kb-spacing-xs, 1rem);padding-right:var(--global-kb-spacing-xs, 1rem);padding-bottom:var(--global-kb-spacing-xs, 1rem);padding-left:var(--global-kb-spacing-xs, 1rem);}.kadence-column597_57cf3b-8c > .kt-inside-inner-col,.kadence-column597_57cf3b-8c > .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-column597_57cf3b-8c > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column597_57cf3b-8c > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:flex-start;}.kadence-column597_57cf3b-8c > .kt-inside-inner-col > *, .kadence-column597_57cf3b-8c > .kt-inside-inner-col > figure.wp-block-image, .kadence-column597_57cf3b-8c > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column597_57cf3b-8c > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kt-row-column-wrap > .kadence-column597_57cf3b-8c{align-self:flex-start;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column597_57cf3b-8c{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column597_57cf3b-8c > .kt-inside-inner-col{align-items:flex-start;}.kadence-column597_57cf3b-8c > .kt-inside-inner-col{background-color:var(--global-palette9, #ffffff);}.kadence-column597_57cf3b-8c > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column597_57cf3b-8c, .kadence-column597_57cf3b-8c h1, .kadence-column597_57cf3b-8c h2, .kadence-column597_57cf3b-8c h3, .kadence-column597_57cf3b-8c h4, .kadence-column597_57cf3b-8c h5, .kadence-column597_57cf3b-8c h6{color:var(--global-palette2, #2B6CB0);}.kadence-column597_57cf3b-8c a{color:var(--global-palette2, #2B6CB0);}.kadence-column597_57cf3b-8c{position:relative;}@media all and (max-width: 1024px){.kt-row-column-wrap > .kadence-column597_57cf3b-8c{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-column597_57cf3b-8c{align-self:auto;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column597_57cf3b-8c > .kt-inside-inner-col{align-items:flex-start;}}@media all and (max-width: 1024px){.kadence-column597_57cf3b-8c > .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-column597_57cf3b-8c > .kt-inside-inner-col > *, .kadence-column597_57cf3b-8c > .kt-inside-inner-col > figure.wp-block-image, .kadence-column597_57cf3b-8c > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column597_57cf3b-8c > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kt-row-column-wrap > .kadence-column597_57cf3b-8c{align-self:flex-start;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column597_57cf3b-8c{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column597_57cf3b-8c > .kt-inside-inner-col{align-items:flex-start;}.kadence-column597_57cf3b-8c > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column597_57cf3b-8c > .kt-inside-inner-col > *, .kadence-column597_57cf3b-8c > .kt-inside-inner-col > figure.wp-block-image, .kadence-column597_57cf3b-8c > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column597_57cf3b-8c > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column597_57cf3b-8c kb-section-dir-horizontal\"><div class=\"kt-inside-inner-col\">\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/toolsmate.online\/vi\/cm-to-pt-converter\/\">CM sang PT<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/cm-to-in-converter\/\">CM sang IN<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/cm-to-pc-converter\/\">CM sang PC<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/cm-to-mm-converter\/\">CM sang MM<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/cm-to-percent-converter\/\">CM 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\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/toolsmate.online\/vi\/cm-to-rem-converter\/\">CM sang REM<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/cm-to-vw-converter\/\">CM sang VW<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/cm-to-vh-converter\/\">CM sang VH<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/toolsmate.online\/vi\/cm-to-px-converter\/\">CM sang PX<\/a><\/li>\n<\/ul>\n<\/div><\/div>\n\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>CM TO EM CONVERTER Centimeters (CM) EM Size Result will be shown here CM to EM Converter -Minimal Responsive Web Design. The two typical features of the contemporary web development industry are precision and flexibility. 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