{"id":7219,"date":"2026-09-22T13:23:15","date_gmt":"2026-09-22T11:23:15","guid":{"rendered":"https:\/\/hi-technologies.ch\/?p=7219"},"modified":"2026-09-22T13:23:17","modified_gmt":"2026-09-22T11:23:17","slug":"taille-ecran-pouces-cm","status":"publish","type":"post","link":"https:\/\/hi-technologies.ch\/fr\/taille-ecran-pouces-cm\/","title":{"rendered":"Taille \u00e9cran en pouces et en cm : tableau complet"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"h-a-retenir\">\u00c0 retenir<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 pouce = 2,54 cm. La diagonale annonc\u00e9e d&#8217;un \u00e9cran se convertit donc en multipliant les pouces par 2,54.<\/li>\n\n\n\n<li>Deux \u00e9crans de m\u00eame diagonale n&#8217;ont pas la m\u00eame surface selon le format : un 65 pouces en 16:9 fait 1.16 m\u00b2 (143.9 x 80.9cm), alors qu\u2019un 65 pouces en 21:9 fera 0.99 m\u00b2 (151.7cm x 65 cm).<\/li>\n\n\n\n<li>La diagonale ne suffit donc pas : c&#8217;est la largeur et la hauteur qui d\u00e9terminent si un \u00e9cran tient sur un mur, dans un encastrement ou dans un meuble.<\/li>\n\n\n\n<li>Les dimensions annonc\u00e9es correspondent \u00e0 la dalle active. L&#8217;appareil complet est toujours un peu plus grand, ce qui est important \u00e0 prendre en compte en int\u00e9gration sur mesure.<\/li>\n<\/ul>\n\n\n\n<p>La taille d&#8217;un \u00e9cran est toujours annonc\u00e9e par sa diagonale, en pouces. Voici les tableaux de conversion complets et les formules de calcul.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-tableau-de-conversion-des-tailles-d-ecran-en-16-9\">Tableau de conversion des tailles d&#8217;\u00e9cran en 16:9<\/h2>\n\n\n\n<p>Le 16:9 est le format de r\u00e9f\u00e9rence des \u00e9crans (professionnels ou grand public). Toutes les valeurs ci-dessous correspondent \u00e0 la dalle active, arrondies au millim\u00e8tre.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Pouces<\/th><th>Diagonale (cm)<\/th><th>Largeur (cm)<\/th><th>Hauteur (cm)<\/th><th>Surface (m\u00b2)<\/th><\/tr><\/thead><tbody><tr><td>24<\/td><td>61,0<\/td><td>53,1<\/td><td>29,9<\/td><td>0,16<\/td><\/tr><tr><td>27<\/td><td>68,6<\/td><td>59,8<\/td><td>33,6<\/td><td>0,20<\/td><\/tr><tr><td>32<\/td><td>81,3<\/td><td>70,8<\/td><td>39,8<\/td><td>0,28<\/td><\/tr><tr><td>40<\/td><td>101,6<\/td><td>88,6<\/td><td>49,8<\/td><td>0,44<\/td><\/tr><tr><td>43<\/td><td>109,2<\/td><td>95,2<\/td><td>53,5<\/td><td>0,51<\/td><\/tr><tr><td>49<\/td><td>124,5<\/td><td>108,5<\/td><td>61,0<\/td><td>0,66<\/td><\/tr><tr><td>50<\/td><td>127,0<\/td><td>110,7<\/td><td>62,3<\/td><td>0,69<\/td><\/tr><tr><td>55<\/td><td>139,7<\/td><td>121,8<\/td><td>68,5<\/td><td>0,83<\/td><\/tr><tr><td>60<\/td><td>152,4<\/td><td>132,8<\/td><td>74,7<\/td><td>0,99<\/td><\/tr><tr><td>65<\/td><td>165,1<\/td><td>143,9<\/td><td>80,9<\/td><td>1,16<\/td><\/tr><tr><td>70<\/td><td>177,8<\/td><td>155,0<\/td><td>87,2<\/td><td>1,35<\/td><\/tr><tr><td>75<\/td><td>190,5<\/td><td>166,0<\/td><td>93,4<\/td><td>1,55<\/td><\/tr><tr><td>80<\/td><td>203,2<\/td><td>177,1<\/td><td>99,6<\/td><td>1,76<\/td><\/tr><tr><td>85<\/td><td>215,9<\/td><td>188,2<\/td><td>105,8<\/td><td>1,99<\/td><\/tr><tr><td>86<\/td><td>218,4<\/td><td>190,4<\/td><td>107,1<\/td><td>2,04<\/td><\/tr><tr><td>98<\/td><td>248,9<\/td><td>217,0<\/td><td>122,0<\/td><td>2,65<\/td><\/tr><tr><td>100<\/td><td>254,0<\/td><td>221,4<\/td><td>124,5<\/td><td>2,76<\/td><\/tr><tr><td>105<\/td><td>266,7<\/td><td>232,4<\/td><td>130,8<\/td><td>3,04<\/td><\/tr><tr><td>110<\/td><td>279,4<\/td><td>243,5<\/td><td>137,0<\/td><td>3,34<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-les-formules-de-conversion\">Les formules de conversion<\/h2>\n\n\n\n<p>Pour une diagonale exprim\u00e9e en pouces, sur un \u00e9cran au format 16:9 :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Diagonale en cm<\/strong>\u00a0= pouces multipli\u00e9s par 2,54.<\/li>\n\n\n\n<li><strong>Largeur en cm<\/strong>\u00a0= diagonale en cm multipli\u00e9e par 0,8716.<\/li>\n\n\n\n<li><strong>Hauteur en cm<\/strong>\u00a0= diagonale en cm multipli\u00e9e par 0,4903.<\/li>\n<\/ul>\n\n\n\n<p>Ces deux coefficients viennent du th\u00e9or\u00e8me de Pythagore appliqu\u00e9 au rapport 16:9. Ils changent avec le format : 0,8480 et 0,5300 en 16:10, puis 0,8000 et 0,6000 en 4:3.<\/p>\n\n\n\n<p><strong>Exemple pour un 75 pouces en 16:9 :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Diagonale : 75 x 2,54 = 190,5 cm<\/li>\n\n\n\n<li>Largeur : 190,5 x 0,8716 = 166,0 cm<\/li>\n\n\n\n<li>Hauteur : 190,5 x 0,4903 = 93,4 cm<\/li>\n\n\n\n<li>Surface : 1,66 x 0,934 = 1,55 m\u00b2<\/li>\n<\/ul>\n\n\n\n<p><strong>Exemple pour un 86 pouces en 16:9 :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Diagonale : 86 x 2,54 = 218,4 cm<\/li>\n\n\n\n<li>Largeur : 218,4 x 0,8716 = 190,4 cm<\/li>\n\n\n\n<li>Hauteur : 218,4 x 0,4903 = 107,1 cm<\/li>\n\n\n\n<li>Surface : 1,904 x 1,071 = 2,04 m\u00b2<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-les-autres-formats-16-10-et-4-3\">Les autres formats : 16:10 et 4:3<\/h2>\n\n\n\n<p>Le 16:10 reste courant sur les moniteurs professionnels et certaines toiles de projection. Le 4:3 subsiste sur des \u00e9crans de projection anciens et quelques usages sp\u00e9cifiques. \u00c0 diagonale \u00e9gale, ces formats donnent une image plus haute et moins large.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Pouces<\/th><th>16:10 largeur (cm)<\/th><th>16:10 hauteur (cm)<\/th><th>4:3 largeur (cm)<\/th><th>4:3 hauteur (cm)<\/th><\/tr><\/thead><tbody><tr><td>24<\/td><td>51,7<\/td><td>32,3<\/td><td>48,8<\/td><td>36,6<\/td><\/tr><tr><td>27<\/td><td>58,2<\/td><td>36,3<\/td><td>54,9<\/td><td>41,1<\/td><\/tr><tr><td>32<\/td><td>68,9<\/td><td>43,1<\/td><td>65,0<\/td><td>48,8<\/td><\/tr><tr><td>43<\/td><td>92,6<\/td><td>57,9<\/td><td>87,4<\/td><td>65,5<\/td><\/tr><tr><td>55<\/td><td>118,5<\/td><td>74,0<\/td><td>111,8<\/td><td>83,8<\/td><\/tr><tr><td>65<\/td><td>140,0<\/td><td>87,5<\/td><td>132,1<\/td><td>99,1<\/td><\/tr><tr><td>75<\/td><td>161,5<\/td><td>101,0<\/td><td>152,4<\/td><td>114,3<\/td><\/tr><tr><td>86<\/td><td>185,2<\/td><td>115,8<\/td><td>174,8<\/td><td>131,1<\/td><\/tr><tr><td>98<\/td><td>211,1<\/td><td>131,9<\/td><td>199,1<\/td><td>149,4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-ce-que-la-diagonale-ne-dit-pas\">Ce que la diagonale ne dit pas<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>L&#8217;encombrement r\u00e9el d\u00e9passe la dalle.<\/strong>\u00a0Les dimensions converties correspondent \u00e0 la surface d&#8217;image. Le ch\u00e2ssis, le cadre et la connectique arri\u00e8re ajoutent quelques centim\u00e8tres sur chaque c\u00f4t\u00e9 et plusieurs centim\u00e8tres en profondeur. Pour un encastrement ou une niche, c&#8217;est la fiche technique du mod\u00e8le retenu qui fait foi, jamais le tableau de conversion.<\/li>\n\n\n\n<li><strong>La hauteur de pose est importante.<\/strong>\u00a0Un m\u00eame \u00e9cran plac\u00e9 \u00e0 1,00 m ou \u00e0 1,40 m du sol ne s&#8217;adresse pas aux m\u00eames places dans la salle.<\/li>\n\n\n\n<li><strong>Le poids suit la surface.<\/strong>\u00a0Passer d&#8217;un 65 \u00e0 un 98 pouces multiplie la surface par 2,3 et conditionne le support comme la nature de la paroi.<\/li>\n\n\n\n<li><strong>La d\u00e9finition n&#8217;agrandit rien.<\/strong>\u00a0Une dalle 4K affiche plus d&#8217;information \u00e0 surface \u00e9gale, mais elle ne rendra pas le texte plus lisible de loin.<\/li>\n<\/ul>\n\n\n\n<p>Ces contraintes se traitent au moment du choix du support et de l&#8217;int\u00e9gration, avec nos solutions de&nbsp;<a href=\"https:\/\/hi-technologies.ch\/fr\/services\/mobilier-technique-supports-ecrans\/\">mobilier technique et supports d&#8217;\u00e9crans<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-quelle-diagonale-pour-quelle-distance\">Quelle diagonale pour quelle distance ?<\/h2>\n\n\n\n<p>Convertir des pouces en centim\u00e8tres r\u00e9pond \u00e0 une question d&#8217;encombrement. La question suivante est celle de la lisibilit\u00e9, et elle d\u00e9pend de la distance du spectateur le plus \u00e9loign\u00e9 et de la densit\u00e9 du contenu affich\u00e9.<\/p>\n\n\n\n<p>Le tableau ci-dessous donne des ordres de grandeur issus de la norme&nbsp;<strong>ANSI\/AVIXA V202.01<\/strong>, dite DISCAS, pour deux types de contenu : des titres et graphiques simples, puis une pr\u00e9sentation courante.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Pouces<\/th><th>Hauteur d&#8217;image (cm)<\/th><th>Titres et graphiques (m)<\/th><th>Pr\u00e9sentation courante (m)<\/th><\/tr><\/thead><tbody><tr><td>43<\/td><td>53,5<\/td><td>3,2<\/td><td>2,1<\/td><\/tr><tr><td>50<\/td><td>62,3<\/td><td>3,7<\/td><td>2,5<\/td><\/tr><tr><td>55<\/td><td>68,5<\/td><td>4,1<\/td><td>2,7<\/td><\/tr><tr><td>65<\/td><td>80,9<\/td><td>4,9<\/td><td>3,2<\/td><\/tr><tr><td>75<\/td><td>93,4<\/td><td>5,6<\/td><td>3,7<\/td><\/tr><tr><td>86<\/td><td>107,1<\/td><td>6,4<\/td><td>4,3<\/td><\/tr><tr><td>98<\/td><td>122,0<\/td><td>7,3<\/td><td>4,9<\/td><\/tr><tr><td>110<\/td><td>137,0<\/td><td>8,2<\/td><td>5,5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Ces valeurs sont indicatives. Un tableau de bord dense, un tableur ou un plan rel\u00e8vent d&#8217;un troisi\u00e8me r\u00e9gime, nettement plus exigeant, que nous d\u00e9taillons dans notre article sur&nbsp;<a href=\"https:\/\/hi-technologies.ch\/fr\/taille-ecran-salle-reunion\/\">la taille d&#8217;\u00e9cran adapt\u00e9e \u00e0 une salle de r\u00e9union<\/a>. Hi Technologies est membre d&#8217;AVIXA et plusieurs de nos collaborateurs sont titulaires de la certification CTS (Certified Technology Specialist).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faire-dimensionner-vos-ecrans\">Faire dimensionner vos \u00e9crans<\/h2>\n\n\n\n<p>Un tableau de conversion r\u00e8gle une question de centim\u00e8tres. Le choix d&#8217;une diagonale, lui, d\u00e9pend de la g\u00e9om\u00e9trie de la salle, du contenu affich\u00e9, de la lumi\u00e8re ambiante, de la hauteur de pose et du mur disponible. C&#8217;est le travail de notre&nbsp;<a href=\"https:\/\/hi-technologies.ch\/fr\/expertise-audiovisuelle\/bureau-detude-interne\/\">bureau d&#8217;\u00e9tudes interne<\/a>, qui traite les espaces un par un et documente chaque choix.<\/p>\n\n\n\n<p>Un projet d&#8217;am\u00e9nagement, une salle \u00e0 \u00e9quiper, un parc \u00e0 harmoniser sur plusieurs sites :&nbsp;<a href=\"https:\/\/hi-technologies.ch\/fr\/contact\/\">contactez-nous pour en parler<\/a>. Nous relevons vos espaces, dimensionnons les \u00e9crans salle par salle et vous proposons une configuration par typologie.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c0 retenir La taille d&#8217;un \u00e9cran est toujours annonc\u00e9e par sa diagonale, en pouces. Voici les tableaux de conversion complets et les formules de calcul. Tableau de conversion des tailles d&#8217;\u00e9cran en 16:9 Le 16:9 est le format de r\u00e9f\u00e9rence des \u00e9crans (professionnels ou grand public). Toutes les valeurs ci-dessous correspondent \u00e0 la dalle active, [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":4446,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[45],"tags":[],"class_list":["post-7219","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.8 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Taille \u00e9cran en pouces et en cm : tableau complet<\/title>\n<meta name=\"description\" content=\"Tableau de conversion des tailles d&#039;\u00e9cran : pouces en cm, largeur, hauteur et surface, en 16:9, 16:10 et 4:3, avec les formules de calcul.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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