{"id":100127,"date":"2026-02-15T20:19:14","date_gmt":"2026-02-15T20:19:14","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100127"},"modified":"2026-02-15T20:19:14","modified_gmt":"2026-02-15T20:19:14","slug":"heater-power-calculator","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/nb\/calculators\/heater-power-calculator\/","title":{"rendered":"Kalkulator for varmeeffekt | P = m\u00b7c\u00b7\u0394T\/t | Gratis nettverkt\u00f8y"},"content":{"rendered":"\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Heater Power Calculator\",\"description\":\"P = m \u00d7 c \u00d7 \u0394T \/ t. Heating power for liquids and air.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/heater-power-calculator\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"datePublished\":\"2024-01-01\",\"dateModified\":\"2025-02-14\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true}<\/script>\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"How do I calculate heater power?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"P = m \u00d7 c \u00d7 \u0394T \/ t, where P is power (W), m is mass (kg), c is specific heat (J\/kg\u00b7K), \u0394T is temperature rise (K or \u00b0C), and t is heating time (s). For water: c = 4186 J\/kg\u00b7K.\"}},\n{\"@type\":\"Question\",\"name\":\"How much power to heat 100 litres of water?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"100L of water = 100kg. To heat by 50\u00b0C in 1 hour: P = 100 \u00d7 4186 \u00d7 50 \/ 3600 = 5,814W \u2248 6kW. Add 10-20% for losses.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the specific heat of common fluids?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Water: 4186 J\/kg\u00b7K. Air: 1005 J\/kg\u00b7K. Oil (thermal): ~2000 J\/kg\u00b7K. Glycol 50%: ~3300 J\/kg\u00b7K. Ethanol: 2440 J\/kg\u00b7K.\"}},\n{\"@type\":\"Question\",\"name\":\"Should I add a safety factor to heater power?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Add 10-20% for heat losses through vessel walls and piping. For outdoor tanks, add 30-50%. For batch heating with cold starts, consider peak demand.\"}},\n{\"@type\":\"Question\",\"name\":\"How do I convert between volume and mass?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"mass = volume \u00d7 density. Water: 1 kg\/L. Air at 20\u00b0C: 1.204 kg\/m\u00b3. Thermal oil: ~0.85 kg\/L. Always use the density at the average temperature.\"}}\n]}<\/script>\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Heater Power\",\"item\":\"https:\/\/vibromera.eu\/calculators\/heater-power-calculator\/\"}]}<\/script>\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&#038;family=JetBrains+Mono:wght@400;500;600&#038;family=Fraunces:opsz,wght@9..144,700;9..144,800&#038;display=swap\" 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16px;font-size:13px;color:var(--vc-ink-muted)}.vc-footer a{color:var(--vc-accent);text-decoration:none}.vc-footer a:hover{text-decoration:underline}.vc-footer-links{margin-top:8px;font-size:12px}.vc-footer-links a{margin:0 8px}@media print{.vc-section-body{max-height:none!important}.vc-faq-a{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-faq-chevron,.vc-presets,.vc-promo{display:none!important}}<\/style>\n\n<div class=\"vc-calculator\">\n<header class=\"vc-header\"><p class=\"vc-header-eyebrow\">Free Engineering Tool<\/p><h1 class=\"vc-header-title\">Heater Power Calculator<\/h1><p class=\"vc-header-subtitle\">Calculate the power required to heat a liquid or air. P = m \u00d7 c \u00d7 \u0394T \/ t. Enter mass or volume, specific heat, temperature rise, and heating time.<\/p><div class=\"vc-badges\"><span class=\"vc-badge\">P = m\u00b7c\u00b7\u0394T\/t<\/span><span class=\"vc-badge\">Liquid &#038; Air<\/span><span class=\"vc-badge\">#177<\/span><\/div><\/header>\n\n<div class=\"vc-card\">\n    <form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\">\n        <div class=\"vc-form-grid\">\n            <div class=\"vc-field vc-field-full\"><label class=\"vc-label\" for=\"vc-fluid\">Fluid<\/label><select class=\"vc-select\" id=\"vc-fluid\"><option value=\"custom\">Custom<\/option><option value=\"water\" selected>Water (c=4186, \u03c1=1000)<\/option><option value=\"air\">Air (c=1005, \u03c1=1.2)<\/option><option value=\"oil\">Thermal Oil (c=2000, \u03c1=850)<\/option><option value=\"glycol\">Glycol 50% (c=3300, \u03c1=1070)<\/option><\/select><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-V\">Volume <span class=\"vc-label-hint\">(litres or m\u00b3 for air)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-V\" step=\"any\" min=\"0\" value=\"100\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-rho\">Density \u03c1 <span class=\"vc-label-hint\">(kg\/m\u00b3)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-rho\" step=\"any\" min=\"0\" value=\"1000\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-c\">Specific Heat c <span class=\"vc-label-hint\">(J\/kg\u00b7K)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-c\" step=\"any\" min=\"0\" value=\"4186\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-dT\">Temperature Rise \u0394T <span class=\"vc-label-hint\">(\u00b0C)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-dT\" step=\"any\" min=\"0\" value=\"50\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-t\">Heating Time <span class=\"vc-label-hint\">(minutes)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-t\" step=\"any\" min=\"0\" value=\"60\"><\/div>\n        <\/div>\n        <div class=\"vc-presets\"><div class=\"vc-presets-label\">Quick presets<\/div>\n            <button type=\"button\" class=\"vc-preset-btn\" data-f=\"water\" data-V=\"100\" data-dT=\"50\" data-t=\"60\">100L water +50\u00b0C \/ 1hr<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-f=\"water\" data-V=\"500\" data-dT=\"40\" data-t=\"120\">500L water +40\u00b0C \/ 2hr<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-f=\"air\" data-V=\"100\" data-dT=\"30\" data-t=\"10\">100m\u00b3 air +30\u00b0C \/ 10min<\/button>\n        <\/div>\n    <\/form>\n    <div class=\"vc-results\" id=\"vc-results\">\n        <div class=\"vc-results-head\"><h2 class=\"vc-results-title\">Results<\/h2><button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg> Copy<\/button><\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard vc-rcard-primary\"><div class=\"vc-rcard-label\">Required Power<\/div><div class=\"vc-rcard-value\" id=\"vc-r-P\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Total Energy<\/div><div class=\"vc-rcard-value\" id=\"vc-r-E\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Mass<\/div><div class=\"vc-rcard-value\" id=\"vc-r-m\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">With 15% Losses<\/div><div class=\"vc-rcard-value\" id=\"vc-r-Ploss\">\u2014<\/div><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-section vc-open\" id=\"vc-sec-theory\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Theory &amp; Formulas<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-section-body\"><div class=\"vc-section-inner vc-theory\"><h3>Heating Power Formula<\/h3><div class=\"vc-formula-box\" id=\"vc-katex-1\"><\/div><p>Where <strong>m<\/strong> = mass (kg), <strong>c<\/strong> = specific heat (J\/kg\u00b7K), <strong>\u0394T<\/strong> = temperature rise (\u00b0C), <strong>t<\/strong> = time (seconds).<\/p><\/div><\/div><\/div>\n<div class=\"vc-section\" id=\"vc-sec-related\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udd17<\/span><span class=\"vc-section-title\">Related Calculators<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-related\"><a class=\"vc-related-link\" href=\"\/calculators\/heat-loss-wall\/\">Heat Loss Wall<\/a><a class=\"vc-related-link\" href=\"\/calculators\/heat-exchanger-lmtd\/\">Heat Exchanger LMTD<\/a><a class=\"vc-related-link\" href=\"\/calculators\/temperature-converter\/\">Temperature Converter<\/a><\/div><\/div><\/div><\/div>\n<div class=\"vc-section\" id=\"vc-sec-faq\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\u2753<\/span><span class=\"vc-section-title\">Frequently Asked Questions<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-faq-list\" id=\"vc-faq-list\"><\/div><\/div><\/div><\/div>\n<div class=\"vc-promo\"><div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Professional instruments. 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Mass \u00d7 specific heat \u00d7 temp rise \/ time in seconds = power in watts.<\/p>'},{q:'How much power for 100L water?',a:'<p>100kg \u00d7 4186 \u00d7 50\u00b0C \/ 3600s = 5,814W \u2248 6kW. Add 10-20% for losses.<\/p>'},{q:'What specific heats for common fluids?',a:'<p>Water: 4186, Air: 1005, Thermal oil: ~2000, Glycol 50%: ~3300 J\/kg\u00b7K.<\/p>'},{q:'Should I add safety factor?',a:'<p>Yes. 10-20% for insulated systems, 30-50% for outdoor\/uninsulated. Consider cold start peaks.<\/p>'},{q:'Volume to mass conversion?',a:'<p>mass = volume \u00d7 density. Water: 1kg\/L. Air at 20\u00b0C: 1.2 kg\/m\u00b3.<\/p>'}];\nvar fl=$('vc-faq-list');faqData.forEach(function(f){fl.innerHTML+='<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>'+f.q+'<\/span><svg class=\"vc-faq-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-faq-a\"><div class=\"vc-faq-a-inner\">'+f.a+'<\/div><\/div><\/div>'});fl.addEventListener('click',function(e){var b=e.target.closest('.vc-faq-q');if(!b)return;b.closest('.vc-faq-item').classList.toggle('vc-open')});\nfunction saveHistory(e){var k='vc_history_'+SLUG;var a=[];try{a=JSON.parse(localStorage.getItem(k))||[]}catch(x){}e._ts=new Date().toISOString();a.unshift(e);if(a.length>10)a=a.slice(0,10);try{localStorage.setItem(k,JSON.stringify(a))}catch(x){}}\nfunction renderFormulas(){try{katex.render('P=\\\\frac{m\\\\cdot c\\\\cdot\\\\Delta T}{t}\\\\quad[\\\\text{W}]',$('vc-katex-1'),{displayMode:true,throwOnError:false})}catch(e){}}\nfunction init(){renderFormulas();calculate()}if(document.readyState==='loading')document.addEventListener('DOMContentLoaded',init);else init();\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Gratis kalkulator for varmeeffekt. P = m \u00d7 c \u00d7 \u0394T \/ t. Beregn varmeeffekt for v\u00e6sker eller luft. Skriv inn masse, spesifikk varme, temperatur\u00f8kning, tid.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100127","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100127","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100127\/revisions"}],"predecessor-version":[{"id":100441,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100127\/revisions\/100441"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/media?parent=100127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/categories?post=100127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/tags?post=100127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}