Energy converter
Joules, kilojoules, calories, kilocalories, watt-hours, kWh, BTU, electronvolts. Type a value, pick the units; the result and the table update as you type, and the address bar keeps the conversion so you can share it.
1 kilowatt-hour in every energy unit
| Unit | Value | Symbol |
|---|---|---|
| electronvolt | 2.24694e+25 | ev |
| joule | 3600000 | j |
| kilojoule | 3600 | kj |
| megajoule | 3.6 | mj |
| calorie | 860421 | cal |
| kilocalorie | 860.421 | kcal |
| watt-hour | 1000 | wh |
| kilowatt-hour | 1 | kwh |
| British thermal unit | 3412.14 | btu |
| foot-pound | 2655220 | ftlb |
Other converters: Length · Area · Volume · Mass · Temperature · Speed · Time · Power · Pressure · Data · Angle · Frequency · Fuel economy
About the energy converter
Conversions use exact definitions where they exist (an inch is 25.4 mm, a pound is 0.45359237 kg, a US gallon is 3.785411784 L) and standard values elsewhere; results are shown to six significant figures. Temperature converts through Celsius; fuel economy is an inverse relation, so it converts through litres per 100 km. Everything runs in your browser and nothing you type is stored — the address bar simply keeps the value and units so you can bookmark or share a conversion. More tools: Tools for students, including the scientific calculator, which also understands units inline (5 km / 20 minutes to km/h).