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Convert between joules, calories, kWh, BTU, and more
Kilocalorie (IT) to Kilowatt Hour
| Kilocalorie (IT) | Kilowatt Hour |
|---|---|
| 1 kcal | 0.001163 kWh |
| 5 kcal | 0.005815 kWh |
| 10 kcal | 0.01163 kWh |
| 25 kcal | 0.029075 kWh |
| 50 kcal | 0.05815 kWh |
| 100 kcal | 0.1163 kWh |
| 500 kcal | 0.5815 kWh |
| 1,000 kcal | 1.163 kWh |
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Quick reference for frequently used energy conversions
1 kWh
= 3.6 MJ
Kilowatt-hour to Megajoules
1 cal
= 4.184 J
Calorie to Joules
1 BTU
= 1,055 J
BTU to Joules
1 eV
= 1.602×10⁻¹⁹ J
Electron-volt to Joules
Understand energy measurements with everyday examples
1 cal
Energy to heat 1g of water by 1°C
2000 kcal
Daily energy intake for an adult
1 kWh
Running a 100W bulb for 10 hours
Common questions about energy conversion
1 joule ≈ 0.239 calories. Conversely, 1 calorie ≈ 4.184 joules.
A kilowatt-hour (kWh) is 1,000 watts used for one hour. It equals 3,600,000 joules. It's commonly used for electricity billing.
BTU (British Thermal Unit) is the energy needed to raise 1 pound of water by 1°F. 1 BTU ≈ 1,055 joules.
Complete list of 35 energy units supported