{"id":4939,"date":"2025-10-31T06:13:56","date_gmt":"2025-10-31T06:13:56","guid":{"rendered":"https:\/\/www.telaled.com\/?p=4939"},"modified":"2026-01-08T09:25:51","modified_gmt":"2026-01-08T09:25:51","slug":"calculating-pixels-per-inch-um-guia-claro-e-pratico","status":"publish","type":"post","link":"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/","title":{"rendered":"Calculating Pixels per Inch: A Clear and Practical Guide"},"content":{"rendered":"<section class=\"section\" id=\"section_983480605\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\t<div class=\"is-border\"\n\t\tstyle=\"border-color:rgb(235, 235, 235);border-width:1px 0px 0px 0px;\">\n\t<\/div>\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n<div class=\"row\"  id=\"row-1501530627\">\n\n\t<div id=\"col-110068047\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<p>If you&#039;re calculating pixels per inch, you need a quick way to determine screen sharpness. This guide explains the calculations, shows examples, and provides practical rules you can use for monitors, cell phones, TVs, and more. <a href=\"https:\/\/www.telaled.com\/en\/\">LED panels<\/a>. You can use these steps to compare screens and choose the right panel for your desired viewing distance.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#O_que_significa_PPI_em_termos_simples\" >What does PPI mean, in simple terms?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#A_formula_basica\" >The basic formula<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#Conversao_rapida_Pixel_Pitch_mm_-%3E_PPI\" >Quick conversion: Pixel Pitch (mm) -&gt; PPI<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#Faixas_de_referencia_comuns_de_PPI_e_orientacoes_de_visualizacao\" >Common PPI reference ranges and viewing guidelines<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#Regras_praticas_para_projetar_e_comprar\" >Practical rules for designing and buying<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#Erros_frequentes\" >Common mistakes<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#Entendendo_a_relacao_entre_PPI_e_espacamento_entre_pixels\" >Understanding the relationship between PPI and pixel spacing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#Calculos_de_exemplo_passo_a_passo\" >Step-by-step example calculations<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#Como_escolher_o_espacamento_entre_pixels_com_base_na_distancia_de_visualizacao\" >How to choose pixel spacing based on viewing distance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#Principais_conclusoes\" >Key findings<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#Resumo_das_Formulas\" >Summary of Formulas<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.telaled.com\/en\/calculating-pixels-per-inch-um-guia-claro-e-pratico\/#Consideracoes_finais\" >Final considerations<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"O_que_significa_PPI_em_termos_simples\"><\/span>What does PPI mean, in simple terms?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div>\n<p>PPI (Pixels Per Inch) is the number of pixels packed into a line on the screen. A higher PPI provides greater sharpness at short distances. A lower PPI is suitable for large screens viewed from a distance. PPI compares resolution and size, allowing you to assess perceived sharpness.<\/p>\n<\/div>\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_2132291337\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1020\" height=\"638\" src=\"https:\/\/www.telaled.com\/wp-content\/uploads\/2025\/10\/PPI-1024x640.webp\" class=\"attachment-large size-large\" alt=\"PPI\" srcset=\"https:\/\/www.telaled.com\/wp-content\/uploads\/2025\/10\/PPI-1024x640.webp 1024w, https:\/\/www.telaled.com\/wp-content\/uploads\/2025\/10\/PPI-300x188.webp 300w, https:\/\/www.telaled.com\/wp-content\/uploads\/2025\/10\/PPI-768x480.webp 768w, https:\/\/www.telaled.com\/wp-content\/uploads\/2025\/10\/PPI-1536x960.webp 1536w, https:\/\/www.telaled.com\/wp-content\/uploads\/2025\/10\/PPI-18x12.webp 18w, https:\/\/www.telaled.com\/wp-content\/uploads\/2025\/10\/PPI-600x375.webp 600w, https:\/\/www.telaled.com\/wp-content\/uploads\/2025\/10\/PPI.webp 1728w\" sizes=\"auto, (max-width: 1020px) 100vw, 1020px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_2132291337 {\n  width: 90%;\n}\n<\/style>\n\t<\/div>\n\t\n<h2><span class=\"ez-toc-section\" id=\"A_formula_basica\"><\/span>The basic formula<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Use this formula when you know the width and height of the <a href=\"https:\/\/www.telaled.com\/en\/compreendendo-as-pixel-tela-principais-recursos-beneficios-e-aplicacao\/\">screen in pixels<\/a> and its diagonal size in inches.<\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 120%;\"><em><strong>PPI = \u221a(width\u00b2 + height\u00b2) \/ diagonal<\/strong><\/em><\/span><\/p>\n<p><strong>Steps:<\/strong><\/p>\n<ol>\n<li>Square the pixel width.<\/li>\n<li>Square the pixel height.<\/li>\n<li>Add the two squares together.<\/li>\n<li>Calculate the square root (this results in the diagonal pixels).<\/li>\n<\/ol>\n<div><em><strong>Example: 15.6\u2033 laptop with 1920\u00d71080 resolution<\/strong><\/em><\/div>\n<div>\u00a0<\/div>\n<ol>\n<li>1920\u00b2 = 3,686,400<\/li>\n<li>1080\u00b2 = 1,166,400<\/li>\n<li>Sum = 3,686,400 + 1,166,400 = 4,852,800<\/li>\n<li>Square root = \u221a4,852,800 \u2248 2,202,908<\/li>\n<li>Divided by 16.6\u2033: 2,202,905 \/ 16.6 \u2248 141.22 PPI<\/li>\n<\/ol>\n<p>So, this screen is about <strong>141 PPI (pixels per inch)<\/strong>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conversao_rapida_Pixel_Pitch_mm_-%3E_PPI\"><\/span><strong>Quick conversion: <a href=\"https:\/\/www.telaled.com\/en\/pixel-pitch\/\">Pixel Pitch<\/a> (mm) -&gt; PPI<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div>For LEDs and digital signage, pixel pitch is usually measured in millimeters. Convert the pitch (P, in mm) to PPI:<\/div>\n<div>\u00a0<\/div>\n<div><em>PPI = 25.4\/P<\/em><\/div>\n<div>\u00a0<\/div>\n<div><em>(25.4 mm = 1 inch)<\/em><\/div>\n<div>\u00a0<\/div>\n<div><em>Example: P = 2.5 m \u2192 25.4\/2.5 = 10.16 m PPI<\/em><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Faixas_de_referencia_comuns_de_PPI_e_orientacoes_de_visualizacao\"><\/span><strong>Common PPI reference ranges and viewing guidelines<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Use this information as a rough guide. The list indicates the pixel spacing in millimeters, when relevant, and the approximate viewing distance in meters.<\/p>\n<table dir=\"ltr\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"218\" \/>\n<col width=\"175\" \/>\n<col width=\"268\" \/><\/colgroup>\n<tbody>\n<tr>\n<td>Smartphones<\/td>\n<td>300-500 PPI<\/td>\n<td>Typical viewing distance: ~0.25 m<\/td>\n<\/tr>\n<tr>\n<td>Laptops<\/td>\n<td>120 \u2013 200 PPI<\/td>\n<td>Typical viewing distance: ~0.5-0.8 m<\/td>\n<\/tr>\n<tr>\n<td>Desktop monitors<\/td>\n<td>90-220 PPI (depending on size and resolution)<\/td>\n<td>Typical viewing distance: ~0.6-1.0 m<\/td>\n<\/tr>\n<tr>\n<td>TVs<\/td>\n<td>40-150 PPI<\/td>\n<td>Typical viewing distance: ~1.5-4 m<\/td>\n<\/tr>\n<tr>\n<td>LED panels for indoor environments<\/td>\n<td>P1.2 \u2013 P3. Approximately 8.5-21 PPI<\/td>\n<td>Viewing distance: ~4-20 m<\/td>\n<\/tr>\n<tr>\n<td>Large outdoor LED panels<\/td>\n<td>P4 \u2013 P10. Approximately 2.5-6.35 PPI<\/td>\n<td>Viewing distance of approximately 4-20 m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Use meters to estimate the viewing distance and millimeters to calculate the pixel spacing.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Regras_praticas_para_projetar_e_comprar\"><\/span><strong>Practical rules for designing and buying<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>For content that you expect people to read closely, aim for a high PPI.<\/li>\n<li>For billboards or large signs, use a larger pixel spacing and accept a lower PPI. The content should use large fonts and bold graphics.<\/li>\n<li>For LED windows in glass, a pixel pitch of less than 2.5 mm works for short distances. For streets<\/li>\n<li>When you know the viewing distance of the facades facing the viewer, P4 \u2013 P10 is common.<\/li>\n<li>When you know the viewing distance, choose the pixel spacing so that individual pixels are not visible at that distance. A simple rule: if the viewing distance is X meters, the pixel spacing will be approximately X x 1.0 to 1.5 (practical rule for approximate readability; adjust visually).<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Erros_frequentes\"><\/span>Common mistakes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Comparing resolution without considering screen size is not a good idea. A 4K TV on a very large panel may still appear blurry if you are sitting very close to it.<\/li>\n<li>Use only the pixel pitch for small screens. For mobile phones and monitors, calculate the PPI (pixels per inch).<\/li>\n<li>Choosing the pixel spacing between LEDs based solely on price isn&#039;t enough. Choose the spacing according to your desired viewing distance.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Entendendo_a_relacao_entre_PPI_e_espacamento_entre_pixels\"><\/span>Understanding the relationship between PPI and pixel spacing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div>PPI and pixel pitch describe pixel density, but in different units:<\/div>\n<div>\u00a0<\/div>\n<ul>\n<li>PPI (pixels per inch) \u2013 used in monitors, cell phones, and TVs.<\/li>\n<li>Pixel Pitch (mm) \u2013 used in LED screens<\/li>\n<\/ul>\n<div>\u00a0<\/div>\n<div>As the pixel pitch decreases, the PPI increases; this means the screen can display sharper details. For close-up viewing (such as in control rooms or indoor displays), choose a smaller pixel pitch, such as P1.5 or P2. For large billboards, <a href=\"https:\/\/www.telaled.com\/en\/fabrica\/modulo-painel-de-led-p6\/\">P6<\/a> a <a href=\"https:\/\/www.telaled.com\/en\/fabrica\/modulo-painel-de-led-p10\/\">P10<\/a> It&#039;s more practical and economical.<\/div>\n<h3><span class=\"ez-toc-section\" id=\"Calculos_de_exemplo_passo_a_passo\"><\/span>Step-by-step example calculations<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div><em><strong>Example 1: Smartphone<\/strong><\/em><br \/><em><strong>Screen resolution: 2532 x 117<\/strong><\/em><br \/><em><strong>Screen size: 6.1\u2033<\/strong><\/em><\/div>\n<div>\u00a0<\/div>\n<div><strong>PPI = sqrt((2532^2 + 1170^2)) \/ 6.1<\/strong><br \/><strong>PPI = sqrt(6412224 + 1368900) \/ 6.1<\/strong><br \/><strong>PPI = sqrt(7781124) \/ 6.1<\/strong><br \/><strong>PPI = 2789.47 \/ 6.1<\/strong><br \/><strong>PPI = 457.3<\/strong><\/div>\n<div>\u00a0<\/div>\n<div>Result: 457 PPI, which explains why smartphone screens appear extremely sharp up close.<\/div>\n<div>\u00a0<\/div>\n<div>\n<div><em><strong>Example 2: LED screen (2.0 mm pixel pitch)<\/strong><\/em><\/div>\n<div>\u00a0<\/div>\n<div><strong>PPI = 25.4 \/ 2.0<\/strong><\/div>\n<div><strong>PPI = 12.7<\/strong><\/div>\n<div>\u00a0<\/div>\n<div>Result: 12.7 PPI, suitable for indoor use with a viewing distance of approximately 2 meters.<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"Como_escolher_o_espacamento_entre_pixels_com_base_na_distancia_de_visualizacao\"><\/span>How to choose pixel spacing based on viewing distance<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div>\n<div>\n<div>A simple rule of thumb:<\/div>\n<div>Distance between pixels (mm) \u2248 Minimum viewing distance (meters)<\/div>\n<div>\u00a0<\/div>\n<div><em>Examples:<\/em><\/div>\n<div><em>Screen <a href=\"https:\/\/www.telaled.com\/en\/fabrica\/modulo-painel-de-led-p2-5\/\">P2.5 <\/a>\u2192 best viewed from approximately 2.5 meters<\/em><\/div>\n<div><em>Screen <a href=\"https:\/\/www.telaled.com\/en\/fabrica\/modulo-painel-de-led-p5\/\">P5<\/a> \u2192 best viewing from approximately 5 meters<\/em><\/div>\n<div><em>P10 \u2192 best viewing from approximately 10 meters<\/em><\/div>\n<div>\u00a0<\/div>\n<div>This rule isn&#039;t exact, but it works well as a quick planning guide.<\/div>\n<\/div>\n<\/div>\n\t<div id=\"gap-1188646712\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1188646712 {\n  padding-top: 10px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-632638570\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-632638570 {\n  padding-top: 10px;\n}\n<\/style>\n\t<\/div>\n\t\n<h3><span class=\"ez-toc-section\" id=\"Principais_conclusoes\"><\/span>Key findings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div>\n<ul>\n<li>PPI measures the level of detail in an image when viewed up close.<\/li>\n<li>Pixel pitch is the physical distance between the LEDs on a screen.<\/li>\n<li>A higher PPI or a smaller pixel pitch results in smaller images.<\/li>\n<li>The pixel density of your screen should be appropriate for the distance people typically sit from when viewing it.<\/li>\n<\/ul>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"Resumo_das_Formulas\"><\/span>Summary of Formulas<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div><em><strong>For your convenience, here are the two formulas in plain text:<\/strong><\/em><\/div>\n<div>\u00a0<\/div>\n<div><em>For screens (using resolution and size):<\/em><\/div>\n<div>\u00a0<\/div>\n<div>PPI = sqrt ((width^2 + height^2)) \/ diagonal<\/div>\n<div>\u00a0<\/div>\n<div><em><strong>For LED panels (using pixel spacing in mm)<\/strong><\/em><\/div>\n<div>\u00a0<\/div>\n<div>PPI = 25.4 \/ pixel spacing<\/div>\n<div>\u00a0<\/div>\n<h3><span class=\"ez-toc-section\" id=\"Consideracoes_finais\"><\/span>Final considerations<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div>\n<div>Knowing how to calculate pixels per inch (PPI) helps you make more informed choices when selecting or comparing screens. This indicates the true sharpness of a screen, in addition to marketing terms such as &quot;\u201c<a href=\"https:\/\/www.telaled.com\/en\/fabrica\/painel-led-full-hd-da-serie-the\/\">Full HD<\/a>\u201d&quot; or &quot;4K&quot;. For LED applications, converting pixel pitch (PiP) to PPI provides a clearer view of visual quality at long distances and the ideal viewing distance.<\/div>\n<div>\u00a0<\/div>\n<div>Whether you&#039;re a designer, integrator, or buyer, understanding the concept of PPI (post-pinpoint resolution) ensures your screen has the same visual quality as it appears on paper.<\/div>\n<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n\t\t<\/div>\n\n\t\t\n<style>\n#section_983480605 {\n  padding-top: 60px;\n  padding-bottom: 60px;\n  min-height: 300px;\n  background-color: rgb(245, 245, 245);\n}\n<\/style>\n\t<\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":4,"featured_media":4940,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,21],"tags":[],"class_list":["post-4939","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","category-intercambio-tecnico"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Calculating Pixels per Inch: Um Guia Claro e Pr\u00e1tico | TELALED<\/title>\n<meta name=\"description\" content=\"Aprenda a calculating Pixels per Inch (PPI) usando f\u00f3rmulas simples e exemplos pr\u00e1ticos. 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