{"id":100192,"date":"2026-02-15T20:25:59","date_gmt":"2026-02-15T20:25:59","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100192"},"modified":"2026-02-15T20:25:59","modified_gmt":"2026-02-15T20:25:59","slug":"power-unit-converter","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/bn\/calculators\/power-unit-converter\/","title":{"rendered":"\u09aa\u09be\u0993\u09af\u09bc\u09be\u09b0 \u0987\u0989\u09a8\u09bf\u099f \u0995\u09a8\u09ad\u09be\u09b0\u09cd\u099f\u09be\u09b0 | kW \u2194 hp \u2194 PS \u2194 BTU\/h | \u09ac\u09bf\u09a8\u09be\u09ae\u09c2\u09b2\u09cd\u09af\u09c7 \u0985\u09a8\u09b2\u09be\u0987\u09a8"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Power Unit Converter\",\"alternateName\":[\"kW to hp Converter\",\"Horsepower Converter\",\"Power Calculator\"],\"description\":\"Free online engineering power unit converter. Convert between kW, W, hp (mechanical), PS (metric horsepower), BTU\/h, ft\u00b7lbf\/s, kcal\/h, and torque\u00d7RPM instantly.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/power-unit-converter\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any (Web Browser)\",\"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,\"featureList\":[\"kW, W, hp, PS, BTU\/h, ft\u00b7lbf\/s, kcal\/h\",\"Torque \u00d7 RPM input\",\"All units displayed simultaneously\",\"Auto-calculation on input change\",\"Preset configurations\"],\"keywords\":\"power converter, kW, hp, PS, BTU\/h, horsepower, watt\"}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"What is the difference between hp and PS?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"hp (mechanical horsepower) equals 745.7 watts and originated from James Watt's measurement of horse power. PS (Pferdest\u00e4rke, metric horsepower) equals 735.5 watts and is defined as lifting 75 kgf one meter in one second. PS is used in Europe and Japan, while hp is standard in the US and UK.\"}},\n{\"@type\":\"Question\",\"name\":\"How to convert kW to hp?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Divide the power in kilowatts by 0.7457 to get mechanical horsepower. For example, 10 kW = 10 \/ 0.7457 = 13.41 hp. Alternatively, multiply kW by 1.341 to get hp.\"}},\n{\"@type\":\"Question\",\"name\":\"What is BTU\/h?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"BTU\/h (British Thermal Units per hour) is a unit of power commonly used in HVAC and heating applications. 1 BTU\/h = 0.000293071 kW. Air conditioners and heaters are often rated in BTU\/h.\"}},\n{\"@type\":\"Question\",\"name\":\"How does power relate to torque?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Power equals torque multiplied by angular velocity. In practical terms: P (kW) = T (Nm) \u00d7 n (RPM) \/ 9549. This means the same power can be achieved with high torque at low speed or low torque at high speed.\"}},\n{\"@type\":\"Question\",\"name\":\"Is electric hp different from mechanical hp?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Electric horsepower is defined as exactly 746 watts, while mechanical horsepower is 745.69987 watts. The difference is negligible (0.04%) and in practice they are used interchangeably. 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font-size:13px; color:var(--vc-ink-muted); }\n.vc-footer a { color:var(--vc-accent); text-decoration:none; }\n.vc-footer a:hover { text-decoration:underline; }\n.vc-footer-links { margin-top:8px; font-size:12px; }\n.vc-footer-links a { margin:0 8px; }\n\n\/* \u2500\u2500 RPM field toggle \u2500\u2500 *\/\n.vc-rpm-field { display:none; }\n.vc-rpm-field.vc-active { display:flex; }\n\n\/* \u2500\u2500 PRINT \u2500\u2500 *\/\n@media print {\n    .vc-section-body { max-height:none!important; }\n    .vc-faq-a { max-height:none!important; }\n    .vc-results { max-height:none!important; padding:24px!important; }\n    .vc-copy-btn, .vc-section-chevron, .vc-faq-chevron, .vc-presets, .vc-promo { display:none!important; }\n}\n<\/style>\n\n<div class=\"vc-calculator\" id=\"vc-power-converter\">\n\n<!-- Header -->\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool<\/p>\n    <h1 class=\"vc-header-title\">Power Unit Converter<\/h1>\n    <p class=\"vc-header-subtitle\">Convert between all common engineering power units instantly. Enter a value in any unit and see all conversions simultaneously.<\/p>\n    <div class=\"vc-badges\">\n        <span class=\"vc-badge\">kW \u2194 hp<\/span>\n        <span class=\"vc-badge\">PS \u2194 BTU\/h<\/span>\n        <span class=\"vc-badge\">Nm \u00d7 RPM<\/span>\n    <\/div>\n<\/header>\n\n<!-- Calculator Card -->\n<div class=\"vc-card\">\n\n    <form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\">\n        <div class=\"vc-form-grid\">\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-value\">Power Value<\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-value\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 5.5\" value=\"5.5\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-unit\">Input Unit<\/label>\n                <select class=\"vc-select\" id=\"vc-unit\">\n                    <option value=\"kW\" selected>kW (kilowatt)<\/option>\n                    <option value=\"W\">W (watt)<\/option>\n                    <option value=\"hp\">hp (mechanical horsepower)<\/option>\n                    <option value=\"PS\">PS (metric horsepower)<\/option>\n                    <option value=\"BTU\/h\">BTU\/h (British Thermal Unit\/hour)<\/option>\n                    <option value=\"ft-lbf\/s\">ft\u00b7lbf\/s (foot-pound-force\/second)<\/option>\n                    <option value=\"kcal\/h\">kcal\/h (kilocalorie\/hour)<\/option>\n                    <option value=\"Nm-RPM\">Nm \u00d7 RPM (torque \u00d7 speed)<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field vc-rpm-field\" id=\"vc-rpm-field\">\n                <label class=\"vc-label\" for=\"vc-torque\">Torque <span class=\"vc-label-hint\">(Nm)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-torque\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 35\" value=\"35\">\n            <\/div>\n            <div class=\"vc-field vc-rpm-field\" id=\"vc-rpm-field2\">\n                <label class=\"vc-label\" for=\"vc-rpm\">Speed <span class=\"vc-label-hint\">(RPM)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-rpm\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 1500\" value=\"1500\">\n            <\/div>\n        <\/div>\n\n        <!-- Presets -->\n        <div class=\"vc-presets\">\n            <div class=\"vc-presets-label\">Quick presets<\/div>\n            <button type=\"button\" class=\"vc-preset-btn\" data-val=\"1\" data-unit=\"kW\">1 kW<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-val=\"10\" data-unit=\"hp\">10 hp<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-val=\"5.5\" data-unit=\"kW\">5.5 kW motor<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-val=\"100\" data-unit=\"PS\">100 PS<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-val=\"75\" data-unit=\"kW\">75 kW motor<\/button>\n        <\/div>\n    <\/form>\n\n    <!-- Results -->\n    <div class=\"vc-results\" id=\"vc-results\">\n        <div class=\"vc-results-head\">\n            <h2 class=\"vc-results-title\">All Conversions<\/h2>\n            <button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\">\n                <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>\n                Copy\n            <\/button>\n        <\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard vc-rcard-primary\">\n                <div class=\"vc-rcard-label\">Kilowatts<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-kw\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Watts<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-w\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Mechanical Horsepower<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-hp\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Metric Horsepower (PS)<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-ps\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">BTU per Hour<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-btu\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Foot-Pound-Force per Second<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-ftlbf\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Kilocalories per Hour<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-kcal\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Nm \u00d7 RPM Equivalent<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-nmrpm\">\u2014<\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- Theory & Reference -->\n<div class=\"vc-section vc-open\" id=\"vc-sec-theory\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\">\n        <span class=\"vc-section-toggle-text\">\n            <span class=\"vc-section-icon\">\ud83d\udcd8<\/span>\n            <span class=\"vc-section-title\">Theory &amp; Conversion Factors<\/span>\n        <\/span>\n        <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>\n    <\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner vc-theory\">\n            <h3>Power from Torque<\/h3>\n            <p>When torque and rotational speed are known, power is calculated as:<\/p>\n            <div class=\"vc-formula-box\" id=\"vc-katex-1\"><\/div>\n            <ul>\n                <li><strong>P<\/strong> \u2014 power (kW)<\/li>\n                <li><strong>T<\/strong> \u2014 torque (Nm)<\/li>\n                <li><strong>n<\/strong> \u2014 rotational speed (RPM)<\/li>\n            <\/ul>\n\n            <h3>Conversion Factors to kW<\/h3>\n            <table class=\"vc-table\">\n                <thead><tr><th>Unit<\/th><th>Symbol<\/th><th>\u00d7 Factor = kW<\/th><th>Exact Value<\/th><\/tr><\/thead>\n                <tbody>\n                    <tr><td>Watt<\/td><td>W<\/td><td>\u00f7 1000<\/td><td>1 W = 0.001 kW<\/td><\/tr>\n                    <tr><td>Mechanical Horsepower<\/td><td>hp<\/td><td>\u00d7 0.7457<\/td><td>1 hp = 745.69987 W<\/td><\/tr>\n                    <tr><td>Metric Horsepower<\/td><td>PS<\/td><td>\u00d7 0.7355<\/td><td>1 PS = 735.49875 W<\/td><\/tr>\n                    <tr><td>BTU per Hour<\/td><td>BTU\/h<\/td><td>\u00d7 0.000293071<\/td><td>1 BTU\/h = 0.293071 W<\/td><\/tr>\n                    <tr><td>Foot-Pound-Force\/s<\/td><td>ft\u00b7lbf\/s<\/td><td>\u00d7 0.001355818<\/td><td>1 ft\u00b7lbf\/s = 1.355818 W<\/td><\/tr>\n                    <tr><td>Kilocalorie per Hour<\/td><td>kcal\/h<\/td><td>\u00d7 0.001163<\/td><td>1 kcal\/h = 1.163 W<\/td><\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>Practical Example<\/h3>\n            <div class=\"vc-example-box\">\n                <div class=\"vc-example-title\">Example \u2014 Convert 10 hp to other units<\/div>\n                <p><strong>Given:<\/strong> 10 hp (mechanical)<\/p>\n                <p>kW = 10 \u00d7 0.7457 = <strong>7.457 kW<\/strong><\/p>\n                <p>W = 7457 W<\/p>\n                <p>PS = 7.457 \/ 0.7355 = <strong>10.14 PS<\/strong><\/p>\n                <p>BTU\/h = 7.457 \/ 0.000293071 = <strong>25,436 BTU\/h<\/strong><\/p>\n            <\/div>\n\n            <div class=\"vc-info-box\">\n                <p><strong>\u2139\ufe0f Note:<\/strong> The difference between hp and PS is only ~1.4%. 1 hp = 1.01387 PS. In many practical contexts they are used interchangeably, but for precise engineering work, use the correct conversion.<\/p>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- Related Calculators -->\n<div class=\"vc-section\" id=\"vc-sec-related\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\">\n        <span class=\"vc-section-toggle-text\">\n            <span class=\"vc-section-icon\">\ud83d\udd17<\/span>\n            <span class=\"vc-section-title\">Related Calculators<\/span>\n        <\/span>\n        <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>\n    <\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner\">\n            <div class=\"vc-related\">\n                <a class=\"vc-related-link\" href=\"\/calculators\/belt-tension-calculator\/\">Belt Tension Calculator<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/thread-size-converter\/\">Thread Size Converter<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/residual-unbalance-iso1940\/\">Residual Unbalance (ISO 1940)<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/vibration-velocity\/\">Vibration Velocity (ISO 10816)<\/a>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- FAQ -->\n<div class=\"vc-section\" id=\"vc-sec-faq\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\">\n        <span class=\"vc-section-toggle-text\">\n            <span class=\"vc-section-icon\">\u2753<\/span>\n            <span class=\"vc-section-title\">Frequently Asked Questions<\/span>\n        <\/span>\n        <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>\n    <\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner\">\n            <div class=\"vc-faq-list\" id=\"vc-faq-list\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- Promo -->\n<div class=\"vc-promo\">\n    <div class=\"vc-promo-text\">\n        <strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>\n        Professional field balancing instruments and vibration analysis software. Measure power, torque, and vibration on-site. Used in 50+ countries.\n    <\/div>\n    <a class=\"vc-promo-link\" href=\"https:\/\/vibromera.eu\/\" target=\"_blank\" rel=\"noopener\">Learn More<\/a>\n<\/div>\n\n<!-- Footer -->\n<footer class=\"vc-footer\">\n    <p>\u00a9 2024\u20132025 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a> \u2014 Engineering Calculators<\/p>\n    <p style=\"font-size:12px;margin-top:4px;\">Conversion factors per IEEE\/ISO standards. Last updated: February 2025<\/p>\n    <div class=\"vc-footer-links\">\n        <a href=\"\/calculators\/engineering-calculators\/\">All Calculators<\/a>\n        <a href=\"https:\/\/vibromera.eu\/contacts\/\">Contact<\/a>\n    <\/div>\n<\/footer>\n\n<\/div>\n\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.11\/dist\/katex.min.js\"><\/script>\n<script>\n(function() {\n    'use strict';\n\n    var SLUG = 'power-unit-converter';\n\n    function $(id) { return document.getElementById(id); }\n    function fmt(n, d) {\n        if(isNaN(n)||!isFinite(n)) return '\u2014';\n        if (Math.abs(n) >= 1e6) return n.toExponential(3);\n        if (Math.abs(n) >= 10000) return n.toFixed(0).replace(\/\\B(?=(\\d{3})+(?!\\d))\/g, ',');\n        if (Math.abs(n) >= 100) return n.toFixed(1).replace(\/\\.0$\/, '');\n        if (Math.abs(n) >= 1) return n.toFixed(d===undefined?3:d).replace(\/(\\.\\d*?)0+$\/,'$1').replace(\/\\.$\/,'');\n        if (Math.abs(n) >= 0.001) return n.toFixed(d===undefined?4:d).replace(\/(\\.\\d*?)0+$\/,'$1').replace(\/\\.$\/,'');\n        return n.toExponential(3);\n    }\n\n    \/* \u2500\u2500 CONVERSION FACTORS (to kW) \u2500\u2500 *\/\n    var TO_KW = {\n        'kW': 1,\n        'W': 0.001,\n        'hp': 0.745699872,\n        'PS': 0.735498750,\n        'BTU\/h': 0.000293071,\n        'ft-lbf\/s': 0.001355818,\n        'kcal\/h': 0.001163\n    };\n\n    \/* \u2500\u2500 TOGGLE RPM FIELDS \u2500\u2500 *\/\n    function toggleRPM() {\n        var isNmRPM = $('vc-unit').value === 'Nm-RPM';\n        $('vc-rpm-field').classList.toggle('vc-active', isNmRPM);\n        $('vc-rpm-field2').classList.toggle('vc-active', isNmRPM);\n        $('vc-value').closest('.vc-field').style.display = isNmRPM ? 'none' : '';\n    }\n\n    \/* \u2500\u2500 CALCULATION \u2500\u2500 *\/\n    function calculate() {\n        var unit = $('vc-unit').value;\n        var kW;\n\n        if (unit === 'Nm-RPM') {\n            var torque = parseFloat($('vc-torque').value);\n            var rpm = parseFloat($('vc-rpm').value);\n            if (!torque || torque < 0 || !rpm || rpm < 0) {\n                $('vc-results').classList.remove('vc-visible');\n                return;\n            }\n            kW = (torque * rpm) \/ 9549;\n        } else {\n            var val = parseFloat($('vc-value').value);\n            if (isNaN(val) || val < 0) {\n                $('vc-results').classList.remove('vc-visible');\n                return;\n            }\n            kW = val * TO_KW[unit];\n        }\n\n        \/\/ Convert from kW to all units\n        var W = kW * 1000;\n        var hp = kW \/ TO_KW['hp'];\n        var PS = kW \/ TO_KW['PS'];\n        var btu = kW \/ TO_KW['BTU\/h'];\n        var ftlbf = kW \/ TO_KW['ft-lbf\/s'];\n        var kcal = kW \/ TO_KW['kcal\/h'];\n\n        $('vc-r-kw').innerHTML = fmt(kW) + ' <span class=\"vc-rcard-unit\">kW<\/span>';\n        $('vc-r-w').innerHTML = fmt(W) + ' <span class=\"vc-rcard-unit\">W<\/span>';\n        $('vc-r-hp').innerHTML = fmt(hp) + ' <span class=\"vc-rcard-unit\">hp<\/span>';\n        $('vc-r-ps').innerHTML = fmt(PS) + ' <span class=\"vc-rcard-unit\">PS<\/span>';\n        $('vc-r-btu').innerHTML = fmt(btu) + ' <span class=\"vc-rcard-unit\">BTU\/h<\/span>';\n        $('vc-r-ftlbf').innerHTML = fmt(ftlbf) + ' <span class=\"vc-rcard-unit\">ft\u00b7lbf\/s<\/span>';\n        $('vc-r-kcal').innerHTML = fmt(kcal) + ' <span class=\"vc-rcard-unit\">kcal\/h<\/span>';\n\n        \/\/ Nm\u00d7RPM equivalent (show as \"T Nm @ n RPM\" for a reference 1500 RPM)\n        var refRPM = 1500;\n        var refTorque = kW * 9549 \/ refRPM;\n        $('vc-r-nmrpm').innerHTML = fmt(refTorque) + ' <span class=\"vc-rcard-unit\">Nm @ ' + refRPM + ' RPM<\/span>';\n\n        $('vc-results').classList.add('vc-visible');\n\n        saveHistory({\n            kW: fmt(kW),\n            unit: unit,\n            _summary: fmt(kW) + ' kW = ' + fmt(hp) + ' hp = ' + fmt(PS) + ' PS'\n        });\n    }\n\n    \/* \u2500\u2500 UNIT CHANGE \u2500\u2500 *\/\n    $('vc-unit').addEventListener('change', function() {\n        toggleRPM();\n        calculate();\n    });\n\n    \/* \u2500\u2500 PRESETS \u2500\u2500 *\/\n    document.querySelectorAll('.vc-preset-btn').forEach(function(btn) {\n        btn.addEventListener('click', function(e) {\n            e.preventDefault();\n            $('vc-value').value = this.getAttribute('data-val');\n            $('vc-unit').value = this.getAttribute('data-unit');\n            toggleRPM();\n            calculate();\n        });\n    });\n\n    \/* \u2500\u2500 AUTO-CALCULATE \u2500\u2500 *\/\n    $('vc-form').addEventListener('input', calculate);\n    $('vc-form').addEventListener('change', calculate);\n\n    \/* \u2500\u2500 COPY \u2500\u2500 *\/\n    $('vc-copy-btn').addEventListener('click', function() {\n        var text = 'Power Unit Conversion\\n' +\n            '\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\n' +\n            'kW: ' + $('vc-r-kw').textContent + '\\n' +\n            'W: ' + $('vc-r-w').textContent + '\\n' +\n            'hp: ' + $('vc-r-hp').textContent + '\\n' +\n            'PS: ' + $('vc-r-ps').textContent + '\\n' +\n            'BTU\/h: ' + $('vc-r-btu').textContent + '\\n' +\n            'ft\u00b7lbf\/s: ' + $('vc-r-ftlbf').textContent + '\\n' +\n            'kcal\/h: ' + $('vc-r-kcal').textContent + '\\n' +\n            'Nm\u00d7RPM: ' + $('vc-r-nmrpm').textContent + '\\n' +\n            '\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\n' +\n            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document.querySelectorAll('.vc-section-toggle').forEach(function(btn) {\n        btn.addEventListener('click', function() {\n            var section = this.closest('.vc-section');\n            var isOpen = section.classList.contains('vc-open');\n            section.classList.toggle('vc-open');\n            this.setAttribute('aria-expanded', !isOpen);\n        });\n    });\n\n    \/* \u2500\u2500 FAQ \u2500\u2500 *\/\n    var faqData = [\n        { q: 'What is the difference between hp and PS?', a: '<p><strong>hp<\/strong> (mechanical horsepower) was defined by James Watt as 550 ft\u00b7lbf\/s, which equals <strong>745.7 W<\/strong>.<\/p><p><strong>PS<\/strong> (Pferdest\u00e4rke, German for \"horse strength\") is the metric horsepower, defined as the power to raise 75 kgf by 1 meter in 1 second, which equals <strong>735.5 W<\/strong>.<\/p><p>1 hp \u2248 1.0139 PS. The difference is ~1.4%. PS is used in Europe and Japan; hp is standard in the US and UK.<\/p>' },\n        { q: 'How to convert kW to hp?', a: '<p>Divide kilowatts by 0.7457:<\/p><p><strong>hp = kW \/ 0.7457<\/strong><\/p><p>Or multiply by 1.341:<\/p><p><strong>hp = kW \u00d7 1.341<\/strong><\/p><p>Examples: 1 kW = 1.341 hp, 5.5 kW = 7.38 hp, 75 kW = 100.6 hp<\/p>' },\n        { q: 'What is BTU\/h?', a: '<p>BTU\/h (British Thermal Units per hour) is a unit of power commonly used in HVAC, heating, and cooling applications.<\/p><p>1 BTU is the energy needed to raise the temperature of 1 pound of water by 1\u00b0F.<\/p><p><strong>1 kW = 3,412.14 BTU\/h<\/strong><\/p><p>Air conditioners are often rated in BTU\/h \u2014 a typical window unit might be 5,000\u201312,000 BTU\/h (1.5\u20133.5 kW).<\/p>' },\n        { q: 'How does power relate to torque?', a: '<p>Power is torque multiplied by angular velocity:<\/p><p><strong>P (kW) = T (Nm) \u00d7 n (RPM) \/ 9549<\/strong><\/p><p>This means:<\/p><ul><li>The same power can be achieved with high torque at low speed, or low torque at high speed<\/li><li>An electric motor rated at 5.5 kW and 1500 RPM produces 35 Nm of torque<\/li><li>A gearbox trades speed for torque (or vice versa) while (ideally) preserving power<\/li><\/ul>' },\n        { q: 'Is electric hp different from mechanical hp?', a: '<p>Slightly. <strong>Electric horsepower<\/strong> is defined as exactly 746 W. <strong>Mechanical horsepower<\/strong> is 745.69987 W.<\/p><p>The difference is only 0.04% \u2014 negligible in practice. Electric motor nameplates in the US typically use electric hp, but the distinction rarely matters in engineering calculations.<\/p><p>This converter uses the mechanical hp value (0.7457 kW).<\/p>' }\n    ];\n\n    var faqList = $('vc-faq-list');\n    faqData.forEach(function(faq) {\n        faqList.innerHTML += '<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>' + faq.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\">' + faq.a + '<\/div><\/div><\/div>';\n    });\n    faqList.addEventListener('click', function(e) {\n        var btn = e.target.closest('.vc-faq-q');\n        if (!btn) return;\n        btn.closest('.vc-faq-item').classList.toggle('vc-open');\n    });\n\n    \/* \u2500\u2500 HISTORY \u2500\u2500 *\/\n    function saveHistory(entry) {\n        var key = 'vc_history_' + SLUG;\n        var arr = [];\n        try { arr = JSON.parse(localStorage.getItem(key)) || []; } catch(e) {}\n        entry._ts = new Date().toISOString();\n        arr.unshift(entry);\n        if (arr.length > 10) arr = arr.slice(0, 10);\n        try { localStorage.setItem(key, JSON.stringify(arr)); } catch(e) {}\n    }\n\n    \/* \u2500\u2500 KATEX \u2500\u2500 *\/\n    function renderFormulas() {\n        try {\n            katex.render('P\\\\;[\\\\text{kW}] = \\\\frac{T\\\\;[\\\\text{Nm}] \\\\times n\\\\;[\\\\text{RPM}]}{9549}', $('vc-katex-1'), { displayMode: true, throwOnError: false });\n        } catch(e) {}\n    }\n\n    \/* \u2500\u2500 INIT \u2500\u2500 *\/\n    function init() {\n        toggleRPM();\n        renderFormulas();\n        calculate();\n    }\n\n    if (document.readyState === 'loading') {\n        document.addEventListener('DOMContentLoaded', init);\n    } else {\n        init();\n    }\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>\u09ac\u09bf\u09a8\u09be\u09ae\u09c2\u09b2\u09cd\u09af\u09c7 \u0985\u09a8\u09b2\u09be\u0987\u09a8 \u09b6\u0995\u09cd\u09a4\u09bf \u098f\u0995\u0995 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0\u0995\u09be\u09b0\u09c0\u0964 kW, W, hp (\u09af\u09be\u09a8\u09cd\u09a4\u09cd\u09b0\u09bf\u0995), PS (\u09ae\u09c7\u099f\u09cd\u09b0\u09bf\u0995 \u0985\u09b6\u09cd\u09ac\u09b6\u0995\u09cd\u09a4\u09bf), BTU\/h, ft\u00b7lbf\/s, kcal\/h \u098f\u09ac\u0982 \u099f\u09b0\u09cd\u0995\u00d7RPM \u098f\u09b0 \u09ae\u09a7\u09cd\u09af\u09c7 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09b0\u09c1\u09a8\u0964 \u09a4\u09be\u09ce\u0995\u09cd\u09b7\u09a3\u09bf\u0995 \u09ab\u09b2\u09be\u09ab\u09b2\u0964<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100192","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100192","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100192\/revisions"}],"predecessor-version":[{"id":100507,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100192\/revisions\/100507"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/media?parent=100192"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/categories?post=100192"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/tags?post=100192"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}