Energy Conversion Calculator & Energy Unit Converter
Free energy conversion calculator — perform the conversions between energy units instantly. This energy unit converter supports joules, kWh, kJ, kcal, MWh, BTU, eV, and more. Use it as a joule to kWh conversion tool, kJ to kWh conversion calculator, kWh to joules calculator, joule to kcal converter, kilowatt to joules conversion tool, kWh MWh conversion calculator, and joules calories kWh converter. View the complete energy conversion chart for all units of energy conversion.
| From / To | Joule (J) | kJ | kcal | Wh | kWh | BTU | MWh |
|---|---|---|---|---|---|---|---|
| 1 Joule (J) | 1 | 0.001 | 2.39e-4 | 2.778e-4 | 2.778e-7 | 9.478e-4 | 2.778e-10 |
| 1 kJ | 1,000 | 1 | 0.23901 | 0.27778 | 2.778e-4 | 0.94782 | 2.778e-7 |
| 1 kcal | 4,184 | 4.184 | 1 | 1.1622 | 1.1622e-3 | 3.9683 | 1.1622e-6 |
| 1 Wh | 3,600 | 3.6 | 0.86042 | 1 | 0.001 | 3.4121 | 1e-6 |
| 1 kWh | 3,600,000 | 3,600 | 860.42 | 1,000 | 1 | 3,412.1 | 0.001 |
| 1 BTU | 1,055.06 | 1.05506 | 0.25200 | 0.29308 | 2.931e-4 | 1 | 2.931e-7 |
| 1 MWh | 3.6e9 | 3,600,000 | 860,420 | 1,000,000 | 1,000 | 3,412,142 | 1 |
Energy Conversion Guide: Perform the Conversions Between Energy Units
This energy conversion calculator lets you perform the conversions between energy units for physics, engineering, nutrition, and electricity calculations. The most common energy conversions are:
Joule to kWh Conversion & kWh to Joules Calculator
The joule to kWh conversion formula: kWh = J ÷ 3,600,000. Conversely, the kWh to joules calculator formula: J = kWh × 3,600,000. One kilowatt-hour equals exactly 3.6 megajoules (3,600 kJ or 3,600,000 J). For kilowatt to joules conversion: 1 kW × 1 second = 1 J; 1 kW × 1 hour = 3,600,000 J.
kJ to kWh Conversion & kWh MWh Conversion Calculator
kJ to kWh conversion: kWh = kJ ÷ 3,600. Example: 7,200 kJ = 2 kWh. For convert kJ to kWh (reverse): kJ = kWh × 3,600. The kWh MWh conversion calculator is straightforward: 1 MWh = 1,000 kWh. These units of energy conversion are critical for electricity billing, solar energy, and battery capacity calculations.
Joule to kcal Converter & Joules Calories kWh Converter
The joule to kcal converter formula: kcal = J ÷ 4,184. One food Calorie (Cal) = 1 kilocalorie (kcal) = 4,184 joules. The joules calories kWh converter is used in nutrition, thermodynamics, and metabolic calculations. 1 kcal = 4.184 kJ = 1.1622 Wh = 0.0011622 kWh.