Kilowatt-hours (kW·h) to Kilojoules (kJ) Conversion
Kilowatt-hours
The kilowatt-hour (kW·h) is a unit of energy equal to exactly 3,600,000 joules (3.6 MJ), defined as the energy consumed by a one-kilowatt device operating for one hour. It is the standard unit on electricity bills worldwide. A typical European household consumes approximately 3,500 kWh per year. One kWh powers a 100-watt bulb for 10 hours, charges an electric vehicle by approximately 5–8 km of driving range, or powers the average laptop for about 10 hours.
Kilojoules
The kilojoule (kJ) is a unit of energy equal to exactly 1,000 joules. It is the standard unit for expressing food energy in most countries outside the United States, where food labels display energy in both kilojoules and kilocalories (kcal). One kilocalorie equals exactly 4.184 kilojoules. In thermodynamics and chemistry, reaction enthalpies and bond energies are commonly tabulated in kilojoules per mole (kJ/mol).
| Kilowatt-hours (kW·h) | Kilojoules (kJ) |
|---|---|
| 0.1 kW·h | 360.00 kJ |
| 1 kW·h | 3,600.00 kJ |
| 2 kW·h | 7,200.00 kJ |
| 3 kW·h | 10,800.00 kJ |
| 5 kW·h | 18,000.00 kJ |
| 10 kW·h | 36,000.00 kJ |
| 20 kW·h | 72,000.00 kJ |
| 30 kW·h | 108,000.00 kJ |
| 50 kW·h | 180,000.00 kJ |
| 100 kW·h | 360,000.00 kJ |
| 1000 kW·h | 3,600,000.00 kJ |
Frequently Asked Questions (FAQ)
How many kilojoules are in 1 kilowatt-hours?
1 kilowatt-hours (kW·h) is exactly 3,600.00 kilojoules (kJ).
How do I convert kilowatt-hours to kilojoules?
Multiply the value in kilowatt-hours by 3,600.00 to get the result in kilojoules. Or use the converter above — type any number and see the result instantly.