{"id":55886,"date":"2015-10-24T16:04:37","date_gmt":"2015-10-24T14:04:37","guid":{"rendered":"http:\/\/wpcalc.com\/?p=55886"},"modified":"2026-09-28T09:34:45","modified_gmt":"2026-09-28T06:34:45","slug":"rankine","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/converters\/rankine\/","title":{"rendered":"Rankine to Celsius, Fahrenheit &#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\">Rankine Temperature Conversion Tool<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"55886\" data-favorite-title=\"Rankine to Celsius, Fahrenheit &amp; more\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/converters\/rankine\/\" data-favorite-excerpt=\"Enter a temperature in degrees Rankine to convert it to Celsius, Fahrenheit, Kelvin, 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\/rankine\/\" method=\"POST\" class=\"calculator\" id=\"calculator-55886\" data-post=\"55886\"><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 Rankine<\/label><div class=\"term\">\u00b0R<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"temperature_in_rankine\" id=\"field-1\" aria-describedby=\"calc-unit-1 calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"500\"\/><div class=\"unit\" id=\"calc-unit-1\">\u00b0R<\/div><small id=\"calc-info-1\">Enter the temperature in degrees Rankine<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"55886\">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>Fahrenheit<\/span><\/span><span class=\"field-value\" id=\"result-2\" data-unit=\"\u00b0F\"><\/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>Kelvin<\/span><\/span><span class=\"field-value\" id=\"result-3\" 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-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=\"55886\" 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>Rankine 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\\[\n\\begin{aligned}\nC &amp;= \\frac{R-491.67}{1.8} \\\\\nF &amp;= R-459.67 \\\\\nK &amp;= \\frac{R}{1.8} \\\\\nN &amp;= \\frac{C}{3.03030303} \\\\\nD &amp;= (100-C)\\times 1.5 \\\\\nE &amp;= C\\times 0.8 \\\\\nO &amp;= \\frac{C}{1.9047619}+7.5\n\\end{aligned}\n\\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(R\\) \u2014 input temperature in degrees Rankine (\u00b0R)<\/li>\n<li>\\(C\\), \\(F\\), and \\(K\\) \u2014 temperatures in Celsius (\u00b0C), Fahrenheit (\u00b0F), and kelvin (K)<\/li>\n<li>\\(N\\), \\(D\\), \\(E\\), and \\(O\\) \u2014 temperatures in Newton (\u00b0N), Delisle (\u00b0De), R\u00e9aumur (\u00b0Re), and R\u00f8mer (\u00b0R\u00f8)<\/li>\n<\/ul>\n<p>The calculator first finds the Celsius temperature, then uses it to calculate the historical scales. Fahrenheit and kelvin can also be calculated directly from Rankine.<\/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>Rankine to Celsius, Fahrenheit &amp; More \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> enter the default value of 500 \u00b0R to find its equivalent on each temperature scale.<\/p>\n<p>First, convert Rankine to Celsius:<\/p>\n<p>\\[C=\\frac{500-491.67}{1.8}\\approx 4.63\\ ^\\circ\\mathrm{C}\\]<\/p>\n<p>Then calculate the other results using the formulas above:<\/p>\n<p>\\[\\begin{aligned}F&amp;=500-459.67=40.33\\ ^\\circ\\mathrm{F} \\\\ K&amp;=500\/1.8\\approx277.78\\ \\mathrm{K} \\\\ N&amp;\\approx1.53\\ ^\\circ\\mathrm{N} \\\\ D&amp;\\approx143.06\\ ^\\circ\\mathrm{De} \\\\ E&amp;\\approx3.70\\ ^\\circ\\mathrm{Re} \\\\ O&amp;\\approx9.93\\ ^\\circ\\mathrm{R\\o}\\end{aligned}\\]<\/p>\n<p><strong>Result:<\/strong> 500 \u00b0R is approximately 4.63 \u00b0C, 40.33 \u00b0F, 277.78 K, 1.53 \u00b0N, 143.06 \u00b0De, 3.70 \u00b0Re, and 9.93 \u00b0R\u00f8. The displayed values may have different rounding.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to use the calculator<\/h2>\n<ol>\n<li>Enter a nonnegative number in <strong>Temperature in Rankine<\/strong>. The default is 500 \u00b0R; decimals are allowed.<\/li>\n<li>Read the <strong>Celsius<\/strong>, <strong>Fahrenheit<\/strong>, and <strong>Kelvin<\/strong> results for the most commonly used temperature scales.<\/li>\n<li>Read <strong>Newton<\/strong>, <strong>Delisle<\/strong>, <strong>Reaumur<\/strong>, and <strong>R\u00f8mer<\/strong> if you need a historical scale. Use the unit beside each result to identify it.<\/li>\n<\/ol>\n<p>To start with a different unit, use the <a href=\"https:\/\/wpcalc.com\/en\/converters\/fahrenheit\/\">Fahrenheit converter<\/a>, <a href=\"https:\/\/wpcalc.com\/en\/converters\/kelvin\/\">Kelvin converter<\/a>, or <a href=\"https:\/\/wpcalc.com\/en\/converters\/celsius\/\">Celsius converter<\/a> instead.<\/p>\n<h2>What a Rankine conversion tells you<\/h2>\n<p>Rankine is an absolute temperature scale: 0 \u00b0R is absolute zero, the theoretical lower limit of thermodynamic temperature. A change of one Rankine degree is the same size as a change of one Fahrenheit degree. That combination makes Rankine useful in some engineering calculations that use Fahrenheit-sized temperature intervals but require an absolute temperature.<\/p>\n<p>Kelvin is also an absolute scale, but its increments are the same size as Celsius degrees. Because 1 K equals 1.8 \u00b0R as a temperature interval, converting an absolute Rankine temperature to kelvin requires dividing by 1.8. Neither kelvin nor Rankine needs an offset for that conversion. By contrast, converting Rankine to Fahrenheit requires subtracting 459.67 because the two scales have different zero points.<\/p>\n<p>Celsius and Fahrenheit are often easier to interpret as everyday temperatures. For example, the default 500 \u00b0R is about 4.63 \u00b0C or 40.33 \u00b0F: a temperature above water\u2019s freezing point at standard atmospheric pressure. The Newton, Delisle, R\u00e9aumur, and R\u00f8mer outputs express that same temperature on less commonly used scales. Delisle runs in the opposite direction from Celsius, so a warmer temperature has a lower Delisle reading.<\/p>\n<h2>Assumptions and practical tips<\/h2>\n<ul>\n<li>Enter an absolute temperature, not a temperature difference. To convert an interval of 10 \u00b0R, for example, use 10 \u00b0F or 10\/1.8 K as the interval; do not apply the absolute-temperature offsets.<\/li>\n<li>The input starts at 0 \u00b0R. Negative Rankine values are below absolute zero and are not valid ordinary thermodynamic temperatures.<\/li>\n<li>Rounding can make a displayed result differ slightly from a hand calculation. The calculator also uses decimal approximations in its Newton and R\u00f8mer formulas, so retain extra digits when checking intermediate steps.<\/li>\n<li>For context, water freezes at 491.67 \u00b0R and boils at 671.67 \u00b0R at standard atmospheric pressure. The boiling point changes with pressure; these are reference points, not fixed thresholds for every location.<\/li>\n<\/ul>\n<p>If your source uses a historical scale, check its unit before entering a value here. For instance, a Delisle reading belongs in a <a href=\"https:\/\/wpcalc.com\/en\/converters\/delisle\/\">Delisle converter<\/a>, not in the Rankine input. The symbols also matter: \u00b0R denotes Rankine on this page, while \u00b0R\u00f8 denotes R\u00f8mer.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Enter a temperature in degrees Rankine to convert it to Celsius, Fahrenheit, Kelvin, 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-55886","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\/55886","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=55886"}],"version-history":[{"count":2,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55886\/revisions"}],"predecessor-version":[{"id":65308,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/55886\/revisions\/65308"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=55886"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=55886"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=55886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}