{"id":55882,"date":"2015-10-24T16:04:41","date_gmt":"2015-10-24T14:04:41","guid":{"rendered":"http:\/\/wpcalc.com\/?p=55882"},"modified":"2026-09-28T09:19:51","modified_gmt":"2026-09-28T06:19:51","slug":"fahrenheit","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/converters\/fahrenheit\/","title":{"rendered":"Fahrenheit to Celsius, Kelvin &#038; More Converter"},"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\">Fahrenheit Temperature Conversion Tool<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"55882\" data-favorite-title=\"Fahrenheit to Celsius, Kelvin &amp; More\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/converters\/fahrenheit\/\" data-favorite-excerpt=\"Enter a temperature in Fahrenheit to see its equivalent in Celsius, Kelvin, Rankine, Newton, Delisle, R\u00e9aumur, and R\u00f8mer.\" aria-label=\"Add to Favorites\" 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\/en\/converters\/fahrenheit\/\" method=\"POST\" class=\"calculator\" id=\"calculator-55882\" data-post=\"55882\"><fieldset class=\"fieldset-input is-1\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field has-term\" id=\"input-1\"><label for=\"field-1\">Temperature in Fahrenheit<\/label><div class=\"term\">\u00b0F<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"temperature_in_fahrenheit\" id=\"field-1\" aria-describedby=\"calc-unit-1 calc-info-1\" step=\"0.1\" value=\"77\"\/><div class=\"unit\" id=\"calc-unit-1\">\u00b0F<\/div><small id=\"calc-info-1\">Enter the temperature in degrees Fahrenheit<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"55882\">Calculate<\/button><button type=\"reset\">Reset<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Calculate automatically<\/label><small>If enabled, the result will update automatically when you change any value.<\/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> Your Results<\/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=\"Copy Result\" aria-label=\"Copy Result\"><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>Kelvin<\/span><\/span><span class=\"field-value\" id=\"result-2\" data-unit=\"K\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><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=\"Copy Result\" aria-label=\"Copy Result\"><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=\"Copy Result\" aria-label=\"Copy Result\"><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=\"Copy Result\" aria-label=\"Copy Result\"><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>Reaumur<\/span><\/span><span class=\"field-value\" id=\"result-6\" data-unit=\"\u00b0Re\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><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=\"Copy Result\" aria-label=\"Copy Result\"><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\">Copy link to this calculation<\/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>Leave a Comment<\/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=\"55882\" aria-live=\"polite\" aria-labelledby=\"calc-reactions-title\"><p id=\"calc-reactions-title\" class=\"text-sm text-gray-500 text-center mb-2\">How did this result make you feel?<\/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\">Like <\/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\">Helpful <\/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\">Confused <\/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\">Disappointed <\/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\">Inaccurate <\/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>Fahrenheit Temperature Conversion Formula<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">Formula<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">\n\\[\\begin{aligned}C &amp;= \\frac{F-32}{1.8} \\\\ K &amp;= C+273.15 \\\\ Ra &amp;= F+459.67 \\\\ N &amp;= 0.33C \\\\ De &amp;= 1.5(100-C) \\\\ Re &amp;= 0.8C \\\\ Ro &amp;= 0.525C+7.5\\end{aligned}\\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(F\\) \u2014 temperature in degrees Fahrenheit (\u00b0F).<\/li>\n<li>\\(C\\) \u2014 temperature in degrees Celsius (\u00b0C).<\/li>\n<li>\\(K\\) \u2014 temperature in kelvin (K).<\/li>\n<li>\\(Ra\\), \\(N\\), \\(De\\), \\(Re\\), and \\(Ro\\) \u2014 temperatures in degrees Rankine (\u00b0R), Newton (\u00b0N), Delisle (\u00b0De), R\u00e9aumur (\u00b0Re), and R\u00f8mer (\u00b0R\u00f8), respectively.<\/li>\n<\/ul>\n<p>First convert Fahrenheit to Celsius, then use Celsius to calculate most of the other scales. Rankine can be calculated directly from Fahrenheit because both scales use equal-sized degrees.<\/p>\n<p>\r\n<\/section>\n<style id=\"wpcoderpro-inline-459\">.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>Fahrenheit Temperature Conversion \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> Convert 77 \u00b0F, the calculator\u2019s default value, to every available temperature scale.<\/p>\n<p>Start with Celsius:<\/p>\n<p>\\[C=\\frac{77-32}{1.8}=25\\,^{\\circ}\\mathrm{C}\\]<\/p>\n<p>Use 25 \u00b0C to find the remaining values:<\/p>\n<p>\\[\\begin{aligned}K&amp;=25+273.15=298.15\\,\\mathrm{K} \\\\ Ra&amp;=77+459.67=536.67\\,^{\\circ}\\mathrm{R} \\\\ N&amp;=0.33(25)=8.25\\,^{\\circ}\\mathrm{N} \\\\ De&amp;=1.5(100-25)=112.5\\,^{\\circ}\\mathrm{De} \\\\ Re&amp;=0.8(25)=20\\,^{\\circ}\\mathrm{Re} \\\\ Ro&amp;=0.525(25)+7.5=20.625\\,^{\\circ}\\mathrm{R\u00f8}\\end{aligned}\\]<\/p>\n<p><strong>Result:<\/strong> 77 \u00b0F equals 25 \u00b0C, 298.15 K, 536.67 \u00b0R, 8.25 \u00b0N, 112.5 \u00b0De, 20 \u00b0Re, and 20.625 \u00b0R\u00f8. Displayed results may be rounded.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to use the calculator<\/h2>\n<ol>\n<li>Enter a number in the <strong>Temperature in Fahrenheit<\/strong> field. You can enter a negative value, a positive value, or a decimal.<\/li>\n<li>Read the converted temperatures in the <strong>Celsius<\/strong>, <strong>Kelvin<\/strong>, <strong>Rankine<\/strong>, <strong>Newton<\/strong>, <strong>Delisle<\/strong>, <strong>Reaumur<\/strong>, and <strong>R\u00f8mer<\/strong> results.<\/li>\n<li>Check the unit beside each result before copying it. Kelvin uses K, not \u00b0K; the other results use their respective degree symbols.<\/li>\n<\/ol>\n<h2>Understanding Fahrenheit and the other temperature scales<\/h2>\n<p>Fahrenheit is commonly used for weather and everyday temperatures in the United States. On this scale, water freezes at 32 \u00b0F and boils at 212 \u00b0F under standard atmospheric pressure. Celsius assigns those same reference temperatures 0 \u00b0C and 100 \u00b0C, so a change of 1 \u00b0C corresponds to a change of 1.8 \u00b0F. That is why Fahrenheit-to-Celsius conversion requires both subtracting 32 and dividing by 1.8.<\/p>\n<p>Kelvin and Rankine are absolute temperature scales: their zero points correspond to absolute zero. Kelvin increments have the same size as Celsius degrees, while Rankine increments have the same size as Fahrenheit degrees. This makes 0 \u00b0C equal to 273.15 K and 32 \u00b0F equal to 491.67 \u00b0R. Kelvin is especially useful in scientific calculations, where an absolute temperature may be required rather than a value relative to water\u2019s freezing point.<\/p>\n<p>Newton, Delisle, R\u00e9aumur, and R\u00f8mer are less common temperature scales that may appear in historical sources or conversion exercises. Do not assume their numerical values rise in the same direction: Delisle runs downward as Celsius rises. For example, water\u2019s freezing point is 150 \u00b0De, while its boiling point is 0 \u00b0De. A converted number is meaningful only when you keep its scale and unit attached.<\/p>\n<h2>Practical notes and limitations<\/h2>\n<p>These formulas convert temperature values, not temperature <em>differences<\/em>. To convert a change of 18 \u00b0F to Celsius degrees, divide by 1.8 to get a change of 10 \u00b0C; do not subtract 32. Likewise, a change of 1 \u00b0F is a change of 1 \u00b0R, even though the two scales have different zero points.<\/p>\n<p>The calculator may round displayed results. If you need to carry a result into another calculation, keep enough decimal places to avoid accumulating rounding error. The conversion formulas describe the scales; they do not account for thermometer uncertainty, sensor calibration, or differences between a measured temperature and an exact reference value.<\/p>\n<p>An ordinary temperature cannot be below absolute zero, which is \u2212459.67 \u00b0F, 0 K, or 0 \u00b0R. The field may still accept a lower number and return mathematical conversions, but those results do not describe a physically attainable ordinary temperature.<\/p>\n<h2>Quick reference points<\/h2>\n<table>\n<thead>\n<tr>\n<th>Reference point<\/th>\n<th>Fahrenheit<\/th>\n<th>Celsius<\/th>\n<th>Kelvin<\/th>\n<th>Rankine<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Absolute zero<\/td>\n<td>\u2212459.67 \u00b0F<\/td>\n<td>\u2212273.15 \u00b0C<\/td>\n<td>0 K<\/td>\n<td>0 \u00b0R<\/td>\n<\/tr>\n<tr>\n<td>Water freezes<\/td>\n<td>32 \u00b0F<\/td>\n<td>0 \u00b0C<\/td>\n<td>273.15 K<\/td>\n<td>491.67 \u00b0R<\/td>\n<\/tr>\n<tr>\n<td>Water boils<\/td>\n<td>212 \u00b0F<\/td>\n<td>100 \u00b0C<\/td>\n<td>373.15 K<\/td>\n<td>671.67 \u00b0R<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The water reference points assume standard atmospheric pressure. To start with another scale instead, use the <a href=\"https:\/\/wpcalc.com\/en\/converters\/celsius\/\">Celsius converter<\/a>, <a href=\"https:\/\/wpcalc.com\/en\/converters\/kelvin\/\">Kelvin converter<\/a>, <a href=\"https:\/\/wpcalc.com\/en\/converters\/rankine\/\">Rankine converter<\/a>, or <a href=\"https:\/\/wpcalc.com\/en\/converters\/delisle\/\">Delisle converter<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Enter a temperature in Fahrenheit to see its equivalent in Celsius, Kelvin, Rankine, Newton, Delisle, R\u00e9aumur, and R\u00f8mer.<\/p>\n","protected":false},"author":70,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[17],"class_list":["post-55882","post","type-post","status-publish","format-standard","hentry","category-converters","tag-chemistry-units"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55882","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/users\/70"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=55882"}],"version-history":[{"count":2,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55882\/revisions"}],"predecessor-version":[{"id":65270,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55882\/revisions\/65270"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=55882"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=55882"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=55882"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}