ऊर्जा-समतुल्य-कनवर्टर

1 थर्मोकेमिकल कैलोरी (cal) = 4.184 जूल (J)। 1 भोजन कैलोरी (kcal) = 4,184 जूल।

1 किलोवाट-घंटा (kWh) ठीक 3,600,000 जूल (3.6 मेगाजूल) के बराबर होता है।

BTU (ब्रिटिश थर्मल यूनिट) गर्मी की ऊर्जा मापने की इकाई है। 1 BTU ≈ 1,055.06 जूल।

Different fields adopted different units historically: joules (SI) for physics and engineering, calories for nutrition and chemistry, kWh for electricity billing, BTU for HVAC and appliances (US), and electron-volts for atomic and particle physics. This converter bridges all of them.

The electron-volt to joule factor (1 eV = 1.602176634×10⁻¹⁹ J) is exact by SI definition since 2019. The calorie-to-joule and BTU-to-joule factors are defined constants (4.184 J and 1,055.06 J respectively) used consistently across engineering and nutrition standards.

J (joule) and kJ (kilojoule) measure the same physical quantity — energy — in the same SI metric system. A kilojoule is simply 1,000 joules, the same relationship as a kilometer is to a meter.

Yes, the converter uses high-precision factors suitable for scientific and engineering calculations. Always verify critical values independently for safety-critical or published work.

A dietary "Calorie" (capital C, as seen on food labels) is actually a kilocalorie — 1,000 small calories, or 4.184 kJ. This is a common source of confusion in nutrition conversions.

Common conversions include: 1 kWh = 3.6 MJ; 1 kcal = 4.184 kJ; 1 eV = 1.602×10⁻¹⁹ J. See the conversion table for more.

This is a Progressive Web App — install it from your browser menu for app-like experience on mobile and desktop.

Use the feedback link in the footer or contact us directly. We verify all conversion factors against NIST and BIPM standards.