{"id":124971,"date":"2025-02-26T08:55:47","date_gmt":"2025-02-26T06:55:47","guid":{"rendered":"https:\/\/elementor.com\/blog\/convertisseur-en-ligne-px-vers-em-table-de-conversion\/"},"modified":"2025-01-15T12:08:36","modified_gmt":"2025-01-15T10:08:36","slug":"convertisseur-en-ligne-px-vers-em-table-de-conversion","status":"publish","type":"post","link":"https:\/\/elementor.com\/blog\/fr\/convertisseur-en-ligne-px-vers-em-table-de-conversion\/","title":{"rendered":"Convertisseur en ligne PX vers EM &amp; Table de conversion"},"content":{"rendered":"\n<style>\n\n    .converter {\n      border: 1px solid #ccc;\n      padding: 20px;\n      border-radius: 5px;\n    }\n\n    input[type=\"number\"] {\n      padding: 8px;\n      margin: 10px 0;\n      border: 1px solid #ccc;\n      border-radius: 4px;\n      width: 150px;\n    }\n\n  <\/style>\n\n\n  <div class=\"converter\">\n    <h2>Convertisseur PX vers EM (Par d\u00e9faut 16px)<\/h2>\n    <label for=\"pxInput\">Veuillez saisir les pixels (px) :<\/label>\n    <input type=\"number\" id=\"pxInput\"\/>\n\n    <button onclick=\"convert()\">Convertir<\/button>\n\n    <div id=\"result\"><\/div>\n  <\/div>\n\n  <script>\n    function convert() {\n      const pxInput = document.getElementById(\"pxInput\");\n      const result = document.getElementById(\"result\");\n      const defaultFontSize = 16; \/\/ Standard base font-size\n\n      if (pxInput.value) {\n        const emValue = (pxInput.value \/ defaultFontSize).toFixed(2);\n        result.textContent = `${pxInput.value}px is equal to ${emValue}em`;\n      } else {\n        result.textContent = \"Please enter a pixel value.\";       \n      } \n    }\n  <\/script>\n\n<p><strong>PX vers <a class=\"wpil_keyword_link\" href=\"https:\/\/elementor.com\/help\/whats-the-difference-between-px-em-rem-vw-and-vh\/\" title=\"EM\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"5898\">EM<\/a> :<\/strong><\/p>\n\n<p>Formule : (Valeur en Pixels) \/ (Taille de police de base) = Valeur en EM<\/p>\n\n<p>Exemple : 32px \/ 16px = 2 EM<\/p>\n\n<h2 class=\"wp-block-heading\">Table de conversion PX vers EM<\/h2>\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>Pixels (px)<\/th><th>EM<\/th><\/tr><tr><td>8<\/td><td>0.5<\/td><\/tr><tr><td>12<\/td><td>0.75<\/td><\/tr><tr><td>16<\/td><td>1<\/td><\/tr><tr><td>20<\/td><td>1.25<\/td><\/tr><tr><td>24<\/td><td>1.5<\/td><\/tr><tr><td>32<\/td><td>2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\">Unit\u00e9s CSS : Pixels contre EM<\/h2>\n\n<ul class=\"wp-block-list\">\n<li><strong>Pixels (px) :<\/strong> Les pixels sont des unit\u00e9s absolues en <a class=\"wpil_keyword_link\" href=\"https:\/\/elementor.com\/blog\/what-is-css\/\" title=\"CSS\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"5899\">CSS<\/a>. Ils repr\u00e9sentent une taille fixe sur l&rsquo;\u00e9cran, ind\u00e9pendamment de l&rsquo;appareil ou de la r\u00e9solution de l&rsquo;\u00e9cran. L&rsquo;utilisation des pixels offre un contr\u00f4le pr\u00e9cis sur les dimensions des \u00e9l\u00e9ments.<\/li>\n\n\n\n<li><strong>EMs (em) :<\/strong> Les EM sont des unit\u00e9s relatives. Leur taille d\u00e9pend de la taille de police de leur \u00e9l\u00e9ment parent. La taille de police par d\u00e9faut dans la plupart des navigateurs est de 16px, donc 1em est initialement \u00e9gal \u00e0 16px. Les EM sont utiles pour cr\u00e9er des designs \u00e9volutifs et <a class=\"wpil_keyword_link\" href=\"https:\/\/elementor.com\/blog\/responsive-website\/\" title=\"r&#xE9;actif\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"7394\">r\u00e9actifs<\/a>.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Pourquoi convertir PX en EM ?<\/h2>\n\n<ol class=\"wp-block-list\">\n<li><strong>Accessibilit\u00e9 :<\/strong> Les utilisateurs peuvent redimensionner le texte dans leurs navigateurs. Les designs utilisant des EM se redimensionneront proportionnellement avec ces ajustements de taille de texte, les rendant plus accessibles aux utilisateurs ayant des d\u00e9ficiences visuelles.<\/li>\n\n\n\n<li><strong>R\u00e9activit\u00e9 :<\/strong> Les EM aident \u00e0 cr\u00e9er des mises en page qui s&rsquo;adaptent harmonieusement \u00e0 diff\u00e9rentes tailles d&rsquo;\u00e9cran. \u00c9tant donn\u00e9 que les EM sont bas\u00e9s sur les tailles de police, les \u00e9l\u00e9ments se redimensionneront naturellement lorsque la fen\u00eatre d&rsquo;affichage (la zone visible d&rsquo;un site web) change.<\/li>\n\n\n\n<li><strong>Flexibilit\u00e9 :<\/strong> Les \u00e9l\u00e9ments imbriqu\u00e9s utilisant des EM vous permettent de contr\u00f4ler facilement les relations de dimensionnement dans toute une conception. La modification de la taille de police de base impacte de mani\u00e8re pr\u00e9visible tous les \u00e9l\u00e9ments utilisant des EM.<\/li>\n<\/ol>\n\n<h3 class=\"wp-block-heading\">La formule de conversion<\/h3>\n\n<p>Pour convertir les pixels en EM, utilisez la formule suivante :<\/p>\n\n<p>EM = Pixels \/ Taille de police cible (en pixels)<\/p>\n\n<h3 class=\"wp-block-heading\">Exemple :<\/h3>\n\n<p>Si vous souhaitez convertir 24px en EM, et que votre taille de police de base est de 16px (valeur par d\u00e9faut standard) :<\/p>\n\n<ul class=\"wp-block-list\">\n<li>EM = 24px \/ 16px = 1,5em<\/li>\n<\/ul>\n\n<p><strong>Note importante :<\/strong> Dans des mises en page plus complexes, si l&rsquo;\u00e9l\u00e9ment parent lui-m\u00eame a sa taille de police d\u00e9finie en utilisant des EM, les calculs deviennent plus impliqu\u00e9s car les EM imbriqu\u00e9s sont relatifs \u00e0 leur parent imm\u00e9diat.<\/p>\n\n<h3 class=\"wp-block-heading\">Consid\u00e9rations pratiques<\/h3>\n\n<ul class=\"wp-block-list\">\n<li><strong>Taille de police de base :<\/strong> Il est courant de d\u00e9finir une taille de police de base sur l&rsquo;\u00e9l\u00e9ment html ou body. Tous les calculs en EM sont alors bas\u00e9s sur cette valeur.<\/li>\n\n\n\n<li><strong>M\u00e9lange d&rsquo;unit\u00e9s :<\/strong> Bien que les EM favorisent l&rsquo;adaptabilit\u00e9, un m\u00e9lange de px et d&rsquo;EM est souvent utilis\u00e9 pour un contr\u00f4le plus fin dans certaines situations.<\/li>\n\n\n\n<li><strong>REM :<\/strong> Une autre unit\u00e9 relative, les REM, est bas\u00e9e sur la taille de police racine (g\u00e9n\u00e9ralement l&rsquo;\u00e9l\u00e9ment html). Ils peuvent simplifier les calculs dans des mises en page complexes.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Convertisseur PX vers EM (Par d\u00e9faut 16px) Veuillez saisir les pixels (px) : Convertir PX vers EM : Formule : (Valeur en Pixels) \/ (Taille de police de base) = Valeur en EM Exemple : 32px \/ 16px = 2 EM Table de conversion PX vers EM Pixels (px) EM 8 0.5 12 0.75 16 [&hellip;]<\/p>\n","protected":false},"author":2024234,"featured_media":103942,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[514],"tags":[],"marketing_persona":[],"marketing_intent":[],"class_list":["post-124971","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ressources"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Convertisseur en ligne PX vers EM &amp; 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