Kilojoules to Watt Hours Converter
EngineeringJoules, calories, kilowatt-hours and more.
How to convert Kilojoules to Watt Hours
Multiply the kilojoules value by 0.277778: 1 kJ = 0.277778 Wh. Going the other way, 1 Wh = 3.6 kJ, so divide by 0.277778 or use the Watt Hours to Kilojoules converter.
About these units
Kilojoules (kJ)
A kilojoule is 1,000 joules. Food energy is labelled in kilojoules in many countries; 1 kJ is about 0.239 kilocalories.
Watt Hours (Wh)
A watt-hour is the energy of one watt sustained for one hour, exactly 3,600 joules. Phone and laptop batteries are rated in watt-hours.
Kilojoules to Watt Hours conversion table
| Kilojoules (kJ) | Watt Hours (Wh) |
|---|---|
| 1 kJ | 0.277778 Wh |
| 2 kJ | 0.555556 Wh |
| 3 kJ | 0.833333 Wh |
| 4 kJ | 1.11111 Wh |
| 5 kJ | 1.38889 Wh |
| 10 kJ | 2.77778 Wh |
| 20 kJ | 5.55556 Wh |
| 25 kJ | 6.94444 Wh |
| 50 kJ | 13.8889 Wh |
| 100 kJ | 27.7778 Wh |
| 500 kJ | 138.889 Wh |
| 1,000 kJ | 277.778 Wh |
More kilojoules conversions
- Kilojoules to Joules1 kJ = 1,000 J
- Kilojoules to Megajoules1 kJ = 0.001 MJ
- Kilojoules to Gigajoules1 kJ = 1e-6 GJ
- Kilojoules to Millijoules1 kJ = 1e+6 mJ
- Kilojoules to Microjoules1 kJ = 1e+9 µJ
- Kilojoules to Nanojoules1 kJ = 1e+12 nJ
- Kilojoules to Calories1 kJ = 239.006 cal
- Kilojoules to British Thermal Units1 kJ = 0.947813 BTU
- Kilojoules to Ergs1 kJ = 1e+10 erg
See every unit on the Energy Converter.