{"id":66963,"date":"2026-10-13T10:42:36","date_gmt":"2026-10-13T07:42:36","guid":{"rendered":"https:\/\/wpcalc.com\/en\/?p=66963"},"modified":"2026-10-13T10:42:36","modified_gmt":"2026-10-13T07:42:36","slug":"convection-heat-transfer-calculator","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/physics\/convection-heat-transfer-calculator\/","title":{"rendered":"Convection Heat Transfer Calculator"},"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\">Find the Heat Transferred Between a Surface and a Moving Fluid<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"66963\" data-favorite-title=\"Convection Heat Transfer\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/physics\/convection-heat-transfer-calculator\/\" data-favorite-excerpt=\"Calculate the convective heat-transfer rate q = h \u00b7 A \u00b7 \u0394T between a surface and a moving fluid. Enter the heat-transfer coefficient, surface area and temperature difference to get results in watts, kW, BTU\/h and more.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-physic\">\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\/physics\/convection-heat-transfer-calculator\/\" method=\"POST\" class=\"calculator\" id=\"calculator-66963\" data-post=\"66963\"><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\">Convective heat-transfer coefficient (h)<\/label><div class=\"term\">h<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><div class=\"field-group\"><input type=\"text\" name=\"convective_heattransfer_coefficient_h\" id=\"field-1\" aria-describedby=\"calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 25\" min=\"0\" value=\"25\"\/><div class=\"grid grid-cols-1\"><select id=\"field-2\" name=\"unit\" aria-label=\"Unit\"><option value=\"wmk\" selected>W\/(m\u00b2\u00b7K)<\/option><option value=\"kcal\">kcal\/(h\u00b7m\u00b2\u00b7\u00b0C)<\/option><option value=\"btu\">BTU\/(h\u00b7ft\u00b2\u00b7\u00b0F)<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><small id=\"calc-info-1\">How easily heat crosses the surface\u2013fluid boundary. Typical values: free air 5\u201325, forced air 25\u2013250, flowing water 100\u201320,000 W\/(m\u00b2\u00b7K).<\/small><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-3\">Surface area (A)<\/label><div class=\"term\">A<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><div class=\"field-group\"><input type=\"text\" name=\"surface_area_a\" id=\"field-3\" aria-describedby=\"calc-info-3\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" placeholder=\"e.g. 1\" min=\"0\" value=\"1\"\/><div class=\"grid grid-cols-1\"><select id=\"field-4\" name=\"unit\" aria-label=\"Unit\"><option value=\"m2\" selected>m\u00b2<\/option><option value=\"cm2\">cm\u00b2<\/option><option value=\"ft2\">ft\u00b2<\/option><option value=\"in2\">in\u00b2<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><small id=\"calc-info-3\">Area of the surface in contact with the fluid.<\/small><\/div><div class=\"field has-term\" id=\"input-3\"><label for=\"field-5\">Temperature difference (\u0394T)<\/label><div class=\"term\">\u0394T<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><div class=\"field-group\"><input type=\"number\" name=\"temperature_difference_t\" id=\"field-5\" aria-describedby=\"calc-info-5\" placeholder=\"e.g. 40\" step=\"any\" value=\"40\"\/><div class=\"grid grid-cols-1\"><select id=\"field-6\" name=\"unit\" aria-label=\"Unit\"><option value=\"c\" selected>\u00b0C<\/option><option value=\"k\">K<\/option><option value=\"f\">\u00b0F<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><small id=\"calc-info-5\">Difference between the surface and the fluid. Positive = surface hotter than the fluid (heat flows into the fluid); negative = fluid hotter than the surface.<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"66963\">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> Convection Results<\/h3><div class=\"result-box\"><div class=\"field-result is-column\" id=\"output-1\"><span class=\"field-title\"><span>Convective heat-transfer rate<\/span><span class=\"result-term\">q<\/span><\/span><span class=\"field-value\" id=\"result-1\"><\/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 is-column\" id=\"output-2\"><span class=\"field-title\"><span>Details and interpretation<\/span><\/span><span class=\"field-value\" id=\"result-2\"><\/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=\"66963\" 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>Convection Heat Transfer 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\\[ q = h \\, A \\, \\Delta T \\]<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(q\\) \u2014 convective heat-transfer rate (W)<\/li>\n<li>\\(h\\) \u2014 convective heat-transfer coefficient (W\/(m\u00b2\u00b7K))<\/li>\n<li>\\(A\\) \u2014 surface area in contact with the fluid (m\u00b2)<\/li>\n<li>\\(\\Delta T = T_{\\text{surface}} - T_{\\text{fluid}}\\) \u2014 temperature difference (K)<\/li>\n<\/ul>\n<p>This is Newton's law of cooling: the rate at which heat crosses a surface by convection grows in direct proportion to the contact area, the temperature difference between the surface and the fluid, and the coefficient \\(h\\), which captures how effectively the moving fluid carries heat away.<\/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>Convection Heat Transfer \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> a 1 m\u00b2 metal wall at 60 \u00b0C is cooled by forced air at 20 \u00b0C, giving a heat-transfer coefficient of \\(h = 25\\) W\/(m\u00b2\u00b7K).<\/p>\n<p>\\[ q = h \\, A \\, \\Delta T = 25 \\ \\tfrac{\\text{W}}{\\text{m}^2\\cdot\\text{K}} \\times 1\\ \\text{m}^2 \\times (60 - 20)\\ \\text{K} \\]<\/p>\n<p>\\[ q = 1000\\ \\text{W} = 1\\ \\text{kW} \\approx 3412\\ \\tfrac{\\text{BTU}}{\\text{h}} \\]<\/p>\n<p><strong>Result:<\/strong> the surface transfers 1000 W of heat to the air. The heat flux is \\(q\/A = 1000\\) W\/m\u00b2, and if conditions stay steady for one hour, 3.6 kWh of energy is transferred.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to Use the Calculator<\/h2>\n<ol>\n<li>Enter the <strong>Convective heat-transfer coefficient (h)<\/strong> and pick its unit: W\/(m\u00b2\u00b7K), kcal\/(h\u00b7m\u00b2\u00b7\u00b0C) or BTU\/(h\u00b7ft\u00b2\u00b7\u00b0F).<\/li>\n<li>Enter the <strong>Surface area (A)<\/strong> in contact with the fluid, in m\u00b2, cm\u00b2, ft\u00b2 or in\u00b2.<\/li>\n<li>Enter the <strong>Temperature difference (\u0394T)<\/strong> between the surface and the fluid, in \u00b0C, K or \u00b0F. Enter it as surface temperature minus fluid temperature: positive if the surface is hotter, negative if the fluid is hotter.<\/li>\n<li>Read the <strong>convective heat-transfer rate<\/strong> in watts, kilowatts, BTU\/h, cal\/s and hp, plus the heat flux and the direction of heat flow in the details table.<\/li>\n<\/ol>\n<h2>What Is Convection Heat Transfer?<\/h2>\n<p>Convection is heat transfer between a solid surface and a fluid (air, water, oil or any gas or liquid) that moves over it. The fluid molecules touching the hot surface pick up energy and carry it away as they move, while cooler fluid replaces them. Because the fluid is in motion \u2014 driven by a fan or pump (forced convection) or by buoyancy alone (free or natural convection) \u2014 convection transfers heat far faster than conduction through stagnant fluid.<\/p>\n<p>The key quantity is the convective heat-transfer coefficient \\(h\\). It is not a material property like thermal conductivity; it bundles together the fluid's properties (viscosity, density, specific heat), the flow speed, and the geometry and orientation of the surface. This is why \\(h\\) spans several orders of magnitude: roughly 5\u201325 W\/(m\u00b2\u00b7K) for air moving by natural convection, 25\u2013250 for forced air, and 100\u201320,000 for flowing water or condensing steam.<\/p>\n<p>The result \\(q\\) is a <em>rate<\/em>: energy per unit time, in watts. A positive value means the surface loses heat to the fluid (cooling, as with a heat sink or radiator); a negative value means the fluid heats the surface (as in a heater or a hot bath). If you only care about the magnitude, use the absolute value shown in the interpretation box. Doubling any one input \u2014 \\(h\\), \\(A\\) or \\(\\Delta T\\) \u2014 doubles the heat transferred, which is why engineers often fight for more surface area (fins) or higher flow (bigger \\(h\\)) when they need more cooling.<\/p>\n<h2>Typical Values of the Heat-Transfer Coefficient<\/h2>\n<table>\n<thead>\n<tr>\n<th>Situation<\/th>\n<th>h, W\/(m\u00b2\u00b7K)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Air, free (natural) convection<\/td>\n<td>5\u201325<\/td>\n<\/tr>\n<tr>\n<td>Air, forced convection (fan)<\/td>\n<td>25\u2013250<\/td>\n<\/tr>\n<tr>\n<td>Water, slow flow in pipes<\/td>\n<td>500\u20133,000<\/td>\n<\/tr>\n<tr>\n<td>Water, turbulent flow<\/td>\n<td>3,000\u201320,000<\/td>\n<\/tr>\n<tr>\n<td>Boiling water \/ condensing steam<\/td>\n<td>5,000\u2013100,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Assumptions, Limitations and Practical Tips<\/h2>\n<ul>\n<li><strong>\\(h\\) must match your situation.<\/strong> The single biggest source of error is using the wrong coefficient. Use the table above as a guide, or a correlation from a heat-transfer textbook for your exact geometry and flow conditions.<\/li>\n<li><strong>Steady state assumed.<\/strong> The formula gives the instantaneous rate for steady temperatures. If the surface or fluid temperature changes over time, \\(q\\) changes with it \u2014 see our <a href=\"https:\/\/wpcalc.com\/en\/physics\/newtons-law-of-cooling-calculator\/\">Newton's Law of Cooling calculator<\/a> for the time-dependent case.<\/li>\n<li><strong>Uniform \\(h\\) and \\(\\Delta T\\).<\/strong> In reality both vary along a surface (a boundary layer grows downstream). The result is an average over the area, which is usually good enough for design estimates.<\/li>\n<li><strong>Convection only.<\/strong> Real surfaces also lose heat by <a href=\"https:\/\/wpcalc.com\/en\/physics\/wiens-displacement-law-calculator\/\">thermal radiation<\/a> and gain or lose it by conduction. At high temperatures or in still air, radiation can be comparable to convection and should be added separately.<\/li>\n<li><strong>Temperature differences are interchangeable in \u00b0C and K.<\/strong> The calculator converts a \u0394T in \u00b0F to kelvin automatically; you never need to convert absolute temperatures, only the difference.<\/li>\n<li>When sizing equipment, add a safety margin: calculated \\(h\\) values from correlations are often uncertain by 25 % or more.<\/li>\n<\/ul>\n<h2>Related Context<\/h2>\n<p>Convection is one of the three modes of heat transfer, alongside conduction and radiation. It appears everywhere in engineering and daily life \u2014 from CPU heat sinks and car radiators to home heating and weather patterns. If you are analyzing thermal systems more broadly, you may also find our <a href=\"https:\/\/wpcalc.com\/en\/physics\/carnot-efficiency-calculator\/\">Carnot Efficiency calculator<\/a> useful for the theoretical limits of heat engines that ultimately reject heat by convection, or the <a href=\"https:\/\/wpcalc.com\/en\/physics\/linear-thermal-expansion-calculator\/\">Linear Thermal Expansion calculator<\/a> for how those same temperature differences change the size of parts.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Calculate the convective heat-transfer rate q = h \u00b7 A \u00b7 \u0394T between a surface and a moving fluid. Enter the heat-transfer coefficient, surface area and temperature difference to get results in watts, kW, BTU\/h and more.<\/p>\n","protected":false},"author":3168,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[62],"tags":[91],"class_list":["post-66963","post","type-post","status-publish","format-standard","hentry","category-physics","tag-energy-work"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66963","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\/3168"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=66963"}],"version-history":[{"count":1,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66963\/revisions"}],"predecessor-version":[{"id":66964,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/66963\/revisions\/66964"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=66963"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=66963"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=66963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}