{"id":465,"date":"2026-10-03T19:17:45","date_gmt":"2026-10-03T18:17:45","guid":{"rendered":"https:\/\/wpcalc.com\/pt\/kelvin\/"},"modified":"2026-10-03T19:17:45","modified_gmt":"2026-10-03T18:17:45","slug":"kelvin","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/pt\/conversores\/kelvin\/","title":{"rendered":"Conversor de Kelvin para Celsius, Fahrenheit e Mais"},"content":{"rendered":"<section class=\"not-prose calculator-box\" aria-labelledby=\"calculator-title\"><div class=\"flex items-baseline sm:items-center justify-between gap-2 sm:gap-3\"><div class=\"flex flex-col sm:flex-row sm:items-center gap-2\"><span class=\"icon icon-calculator text-primary-700! text-base! dark:text-primary-300!\" aria-hidden=\"true\"><\/span><h2 id=\"calculator-title\" class=\"text-lg font-display font-bold\">Ferramenta de Convers\u00e3o de Temperatura em Kelvin<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"465\" data-favorite-title=\"Kelvin para Celsius, Fahrenheit e Mais\" data-favorite-url=\"https:\/\/wpcalc.com\/pt\/conversores\/kelvin\/\" data-favorite-excerpt=\"Insira uma temperatura em kelvin para convert\u00ea-la em Celsius, Fahrenheit, Rankine, Newton, Delisle, R\u00e9aumur e R\u00f8mer.\" aria-label=\"Adicionar aos favoritos\" data-favorite-icon=\"icon icon-chemistry\">\n    <span class=\"icon icon-shape-star-empty\" aria-hidden=\"true\"><\/span>\n  <\/button>\n  <div class=\"calcdash-favorite__tip\" aria-hidden=\"true\">\n   <span class=\"favorite-tooltip\" id=\"favorite-tooltip\"><\/span>\n  <\/div>\n  <span class=\"sr-only\" role=\"status\" id=\"favorite-status\"><\/span>\n<\/div><\/div><form action=\"https:\/\/wpcalc.com\/pt\/conversores\/kelvin\/\" method=\"POST\" class=\"calculator\" id=\"calculator-465\" data-post=\"465\"><fieldset class=\"fieldset-input is-1\"><legend class=\"sr-only\">Campos de entrada<\/legend><div class=\"field has-term\" id=\"input-1\"><label for=\"field-1\">Temperatura em kelvin<\/label><div class=\"term\">K<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"temperatura_em_kelvin\" id=\"field-1\" aria-describedby=\"calc-unit-1 calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"300\"\/><div class=\"unit\" id=\"calc-unit-1\">K<\/div><small id=\"calc-info-1\">Introduza a temperatura em kelvin<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Recalcular\" id=\"calculate-button\" data-post=\"465\">Calcular<\/button><button type=\"reset\">Redefinir<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Calcular automaticamente<\/label><small>Se ativado, o resultado \u00e9 atualizado automaticamente quando voc\u00ea altera qualquer valor.<\/small><\/div><div class=\"fieldset-result is-hidden\" aria-labelledby=\"result-title\" aria-live=\"polite\" role=\"region\"> <h3 class=\"result-title bg-gradient-to-r from-primary-50 to-gray-50 dark:from-primary-900 dark:to-gray-800\" id=\"result-title\"><span class=\"icon icon-s-pulse\" aria-hidden=\"true\"><\/span> Seus resultados<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Celsius<\/span><\/span><span class=\"field-value\" id=\"result-1\" data-unit=\"\u00b0C\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copiar resultado\" aria-label=\"Copiar resultado\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-2\"><span class=\"field-title\"><span>Fahrenheit<\/span><\/span><span class=\"field-value\" id=\"result-2\" data-unit=\"\u00b0F\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copiar resultado\" aria-label=\"Copiar resultado\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-3\"><span class=\"field-title\"><span>Rankine<\/span><\/span><span class=\"field-value\" id=\"result-3\" data-unit=\"\u00b0R\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copiar resultado\" aria-label=\"Copiar resultado\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-4\"><span class=\"field-title\"><span>Newton<\/span><\/span><span class=\"field-value\" id=\"result-4\" data-unit=\"\u00b0N\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copiar resultado\" aria-label=\"Copiar resultado\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-5\"><span class=\"field-title\"><span>Delisle<\/span><\/span><span class=\"field-value\" id=\"result-5\" data-unit=\"\u00b0De\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copiar resultado\" aria-label=\"Copiar resultado\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-6\"><span class=\"field-title\"><span>R\u00e9aumur<\/span><\/span><span class=\"field-value\" id=\"result-6\" data-unit=\"\u00b0Re\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copiar resultado\" aria-label=\"Copiar resultado\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-7\"><span class=\"field-title\"><span>R\u00f8mer<\/span><\/span><span class=\"field-value\" id=\"result-7\" data-unit=\"\u00b0R\u00f8\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copiar resultado\" aria-label=\"Copiar resultado\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><\/div><div class=\"result-actions\"><button type=\"button\" class=\"copy-link\"><svg viewBox=\"0 0 20 20\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M12.232 4.232a2.5 2.5 0 0 1 3.536 3.536l-1.225 1.224a.75.75 0 0 0 1.061 1.06l1.224-1.224a4 4 0 0 0-5.656-5.656l-3 3a4 4 0 0 0 .225 5.865.75.75 0 0 0 .977-1.138 2.5 2.5 0 0 1-.142-3.667l3-3Z\"\/><path d=\"M11.603 7.963a.75.75 0 0 0-.977 1.138 2.5 2.5 0 0 1 .142 3.667l-3 3a2.5 2.5 0 0 1-3.536-3.536l1.225-1.224a.75.75 0 0 0-1.061-1.06l-1.224 1.224a4 4 0 1 0 5.656 5.656l3-3a4 4 0 0 0-.225-5.865Z\"\/><\/svg><span class=\"copy-link__text\">Copiar link para este c\u00e1lculo<\/span><\/button><span class=\"sr-only\" role=\"status\" id=\"copy-link-status\"><\/span><\/div><\/div><a href=\"#respond\" class=\"hidden transition-opacity duration-300 opacity-0 w-50 text-sm justify-center items-center gap-2 px-4 py-2 rounded bg-gray-200 text-gray-700 hover:bg-gray-300\" id=\"leave-comment\"><span class=\"icon icon-comments\" aria-hidden=\"true\"><\/span>Deixar um coment\u00e1rio<\/a><\/form><\/section><section id=\"calc-reactions\" class=\"not-prose hidden my-12 bg-gradient-to-r from-primary-50 to-gray-50 border border-indigo-100 rounded-xl px-6 py-4 shadow-sm\" data-post=\"465\" aria-live=\"polite\" aria-labelledby=\"calc-reactions-title\"><p id=\"calc-reactions-title\" class=\"text-sm text-gray-500 text-center mb-2\">O que voc\u00ea achou deste resultado?<\/p><div role=\"group\" aria-labelledby=\"calc-reactions-title\" class=\"grid grid-cols-3 sm:flex sm:flex-row sm:justify-around gap-4 sm:items-center sm:flex-wrap\"><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"like\"><span class=\"reaction-count\" data-reaction-count=\"like\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude00 <\/span><span class=\"reaction-description font-medium\">Curti <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"helpful\"><span class=\"reaction-count\" data-reaction-count=\"helpful\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\udca1 <\/span><span class=\"reaction-description font-medium\">\u00datil <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"confused\"><span class=\"reaction-count\" data-reaction-count=\"confused\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude15 <\/span><span class=\"reaction-description font-medium\">Confuso <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"disappointed\"><span class=\"reaction-count\" data-reaction-count=\"disappointed\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude1e <\/span><span class=\"reaction-description font-medium\">Decepcionado <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"inaccurate\"><span class=\"reaction-count\" data-reaction-count=\"inaccurate\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\u274c <\/span><span class=\"reaction-description font-medium\">Impreciso <\/span><\/button><\/div><div id=\"reaction-message\" class=\"hidden mt-8 rounded-md border border-primary-100 bg-white\/50 backdrop-blur-sm px-4 py-2 text-sm text-center shadow-sm\"><\/div><\/section><div class=\"calcdash-ad not-prose calcdash-ad--calc_result calcdash-ad--in-article\"><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-1721569815777345\" data-ad-slot=\"6317458308\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/div>\n<style id=\"wpcoderpro-inline-1\">.formula-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section class=\"formula-box\" aria-labelledby=\"formula-title\">\r\n\t<div id=\"formula-title\" class=\"not-prose font-display mb-4\"><span class=\"icon icon-formula\" aria-hidden=\"true\"><\/span><h2>F\u00f3rmula de Convers\u00e3o de Temperatura em Kelvin<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">F\u00f3rmula<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">\n\\[\n\\begin{aligned}\nC &amp;= K-273.15 \\\\\nF &amp;= \\frac{9}{5}C+32 \\\\\nRa &amp;= \\frac{9}{5}K \\\\\nN &amp;= \\frac{33}{100}C \\\\\nDe &amp;= \\frac{3}{2}(100-C) \\\\\nRe &amp;= \\frac{4}{5}C \\\\\nR\\o &amp;= \\frac{21}{40}C+7.5\n\\end{aligned}\n\\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Onde:<\/strong><\/p>\n<ul>\n<li>\\(K\\) \u2014 temperatura em kelvin (K).<\/li>\n<li>\\(C\\) \u2014 temperatura em graus Celsius (\u00b0C).<\/li>\n<li>\\(F\\) \u2014 temperatura em graus Fahrenheit (\u00b0F).<\/li>\n<li>\\(Ra\\) \u2014 temperatura em graus Rankine (\u00b0R).<\/li>\n<li>\\(N\\), \\(De\\), \\(Re\\) e \\(R\\o\\) \u2014 temperaturas em graus Newton, Delisle, R\u00e9aumur e R\u00f8mer, respectivamente.<\/li>\n<\/ul>\n<p>Primeiro subtraia 273,15 para encontrar a temperatura em Celsius. As restantes f\u00f3rmulas convertem esse valor para as outras escalas, exceto a Rankine, que \u00e9 calculada diretamente a partir do kelvin. A calculadora usa aproxima\u00e7\u00f5es decimais nas convers\u00f5es para Newton e R\u00f8mer, pelo que os \u00faltimos d\u00edgitos apresentados podem diferir ligeiramente dos c\u00e1lculos que usam as fra\u00e7\u00f5es acima.<\/p>\n<p>\r\n<\/section>\n<style id=\"wpcoderpro-inline-2\">.calculation-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section id=\"calculation\" class=\"calculation-box\" aria-labelledby=\"calculation-title\">\r\n\t<div id=\"calculation-title\" class=\"not-prose font-display\"><span class=\"icon icon-unordered-list\" aria-hidden=\"true\"><\/span><h2>Convers\u00e3o de Temperatura em Kelvin \u2013 Exemplo de C\u00e1lculo<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Exemplo:<\/strong> Converter a temperatura predefinida da calculadora, 300 K, para todas as escalas dispon\u00edveis.<\/p>\n<p>Comece pelo Celsius e use-o depois nas convers\u00f5es que dependem dele:<\/p>\n<p>\\[C=300-273.15=26.85\\,^{\\circ}\\mathrm{C}\\]<\/p>\n<p>\\[\\begin{aligned}F&amp;=\\frac{9}{5}(26.85)+32=80.33\\,^{\\circ}\\mathrm{F}\\\\Ra&amp;=\\frac{9}{5}(300)=540\\,^{\\circ}\\mathrm{R}\\\\N&amp;=\\frac{33}{100}(26.85)=8.8605\\,^{\\circ}\\mathrm{N}\\\\De&amp;=\\frac{3}{2}(100-26.85)=109.725\\,^{\\circ}\\mathrm{De}\\\\Re&amp;=\\frac{4}{5}(26.85)=21.48\\,^{\\circ}\\mathrm{Re}\\\\R\\o&amp;=\\frac{21}{40}(26.85)+7.5=21.59625\\,^{\\circ}\\mathrm{R\\o}\\end{aligned}\\]<\/p>\n<p><strong>Resultado:<\/strong> 300 K correspondem a 26,85 \u00b0C, 80,33 \u00b0F, 540 \u00b0R, aproximadamente 8,86 \u00b0N, 109,725 \u00b0De, 21,48 \u00b0Re e aproximadamente 21,60 \u00b0R\u00f8. Os resultados apresentados podem estar arredondados.<\/p>\n<p>\n\r\n<\/section>\n<h2>Como usar a calculadora<\/h2>\n<ol>\n<li>Insira o seu valor no campo <strong>Temperatura em Kelvin<\/strong>. Por exemplo, insira 300 para 300 K; n\u00e3o acrescente a unidade ao n\u00famero.<\/li>\n<li>Leia os valores convertidos em <strong>Celsius<\/strong>, <strong>Fahrenheit<\/strong>, <strong>Rankine<\/strong>, <strong>Newton<\/strong>, <strong>Delisle<\/strong>, <strong>R\u00e9aumur<\/strong> e <strong>R\u00f8mer<\/strong>.<\/li>\n<li>Verifique a unidade ao lado de cada resultado. Se precisar de uma escala inicial diferente, use o <a href=\"https:\/\/wpcalc.com\/pt\/conversores\/celsius\/\">conversor de Celsius<\/a> ou o <a href=\"https:\/\/wpcalc.com\/pt\/conversores\/fahrenheit\/\">conversor de Fahrenheit<\/a>.<\/li>\n<\/ol>\n<h2>O que uma convers\u00e3o de kelvin lhe diz<\/h2>\n<p>O kelvin \u00e9 a unidade de base do SI para a temperatura termodin\u00e2mica. O seu ponto zero \u00e9 o zero absoluto, o limite inferior da temperatura termodin\u00e2mica. Uma temperatura em kelvin escreve-se com K, e n\u00e3o \u00b0K. A escala Celsius tem graus do mesmo tamanho que o kelvin, mas um ponto zero diferente: 273,15 K equivalem a 0 \u00b0C. \u00c9 por isso que a subtra\u00e7\u00e3o de 273,15 \u00e9 o primeiro passo essencial na maioria das convers\u00f5es desta p\u00e1gina.<\/p>\n<p>A escala Fahrenheit \u00e9 comumente usada para temperaturas do dia a dia nos Estados Unidos, enquanto a Celsius \u00e9 habitual nas previs\u00f5es meteorol\u00f3gicas e em muitos contextos pr\u00e1ticos no resto do mundo. A escala Rankine, tal como a kelvin, come\u00e7a no zero absoluto, mas um grau Rankine tem o tamanho de um grau Fahrenheit. \u00c9 por isso que um valor em kelvin \u00e9 multiplicado por 1,8 para obter Rankine, sem qualquer deslocamento adicional. Se o seu valor inicial j\u00e1 estiver em Rankine, use o <a href=\"https:\/\/wpcalc.com\/pt\/conversores\/rankine\/\">conversor de Rankine<\/a>.<\/p>\n<p>As escalas Newton, Delisle, R\u00e9aumur e R\u00f8mer s\u00e3o escalas de temperatura hist\u00f3ricas. Os seus n\u00fameros n\u00e3o podem ser interpretados como valores Celsius ou Fahrenheit: cada escala define os seus pr\u00f3prios pontos de refer\u00eancia e o tamanho dos seus graus. A escala Delisle corre ainda na dire\u00e7\u00e3o oposta \u00e0 da Celsius na faixa de refer\u00eancia habitual \u2014 uma temperatura Celsius mais alta produz uma leitura Delisle mais baixa. A calculadora d\u00e1 temperaturas equivalentes, e n\u00e3o varia\u00e7\u00f5es de temperatura.<\/p>\n<h2>Pontos de refer\u00eancia e limites pr\u00e1ticos<\/h2>\n<p>Dois testes \u00fateis s\u00e3o 273,15 K = 0 \u00b0C = 32 \u00b0F e 373,15 K = 100 \u00b0C = 212 \u00b0F. Este \u00faltimo \u00e9 o ponto de ebuli\u00e7\u00e3o da \u00e1gua pura \u00e0 press\u00e3o atmosf\u00e9rica padr\u00e3o; a temperatura real de ebuli\u00e7\u00e3o da \u00e1gua varia com a press\u00e3o. A 0 K, os equivalentes Celsius e Fahrenheit s\u00e3o \u2212273,15 \u00b0C e \u2212459,67 \u00b0F.<\/p>\n<p>Insira uma temperatura absoluta, n\u00e3o uma diferen\u00e7a de temperatura. Por exemplo, um aumento de 10 K \u00e9 tamb\u00e9m um aumento de 10 graus Celsius; subtrair 273,15 dessa <em>diferen\u00e7a<\/em> seria incorreto. As temperaturas em kelvin n\u00e3o podem ser inferiores a 0 K, e o campo da calculadora tem um m\u00ednimo de zero. Valores fracion\u00e1rios em kelvin s\u00e3o v\u00e1lidos quando a sua medi\u00e7\u00e3o os exigir.<\/p>\n<p>Os valores convertidos podem ser arredondados para apresenta\u00e7\u00e3o, por isso evite tratar os d\u00edgitos extras como precis\u00e3o de medi\u00e7\u00e3o. Os c\u00e1lculos de Newton e R\u00f8mer na ferramenta usam divisores decimais aproximados em vez das fra\u00e7\u00f5es exatas mostradas na f\u00f3rmula. Para valores comuns, a diferen\u00e7a \u00e9 muito pequena, mas ao comparar resultados com elevada precis\u00e3o, calcule com as fra\u00e7\u00f5es exatas e arredonde apenas no final. Se tiver uma temperatura na escala hist\u00f3rica Delisle para converter de volta, use o <a href=\"https:\/\/wpcalc.com\/pt\/conversores\/delisle\/\">conversor de Delisle<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Insira uma temperatura em kelvin para convert\u00ea-la em Celsius, Fahrenheit, Rankine, Newton, Delisle, R\u00e9aumur e R\u00f8mer.<\/p>\n","protected":false},"author":3168,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[27],"class_list":["post-465","post","type-post","status-publish","format-standard","hentry","category-conversores","tag-unidades-de-quimica"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/posts\/465","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/users\/3168"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/comments?post=465"}],"version-history":[{"count":3,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/posts\/465\/revisions"}],"predecessor-version":[{"id":2918,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/posts\/465\/revisions\/2918"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/media?parent=465"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/categories?post=465"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/tags?post=465"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}