Kilojoules to Watt-hours Converter
Convert kJ to Wh instantly — and see every other energy unit at once.
1 kJ=0.277778 Wh
1 kJ in every unit
Joules
1,000J
Kilojoulesfrom
1kJ
Megajoules
0.001MJ
Watt-hours
0.277778Wh
Kilowatt-hours
2.7778e-4kWh
Calories (small)
239.0057cal
Kilocalories (kcal)
0.239006kcal
BTU
0.947813BTU
Electronvolts
6,241,509,074,460,763,000,000eV
Foot-pounds
737.561ft·lb
Common Kilojoules to Watt-hours conversions
| Kilojoules (kJ) | Watt-hours (Wh) |
|---|---|
| 1 kJ | 0.27778 Wh |
| 2 kJ | 0.55556 Wh |
| 5 kJ | 1.38889 Wh |
| 10 kJ | 2.77778 Wh |
| 25 kJ | 6.94444 Wh |
| 50 kJ | 13.88889 Wh |
| 100 kJ | 27.77778 Wh |
| 250 kJ | 69.44444 Wh |
| 500 kJ | 138.88889 Wh |
| 1000 kJ | 277.77778 Wh |
The formula
Kilojoules (kJ) — a unit of energy.
Watt-hours (Wh) — a unit of energy.
Worked examples
1 kJ→0.27778 Wh
Apply Kilojoules ÷ 3.6 with input = 1. Result: 0.27778 Wh.
5 kJ→1.38889 Wh
Apply Kilojoules ÷ 3.6 with input = 5. Result: 1.38889 Wh.
10 kJ→2.77778 Wh
Apply Kilojoules ÷ 3.6 with input = 10. Result: 2.77778 Wh.
FAQ
How do I convert Kilojoules to Watt-hours?
Use the formula: Wh = Kilojoules ÷ 3.6. You can also use the converter above — type any value and the result updates instantly.
Where are Kilojoules used?
Kilojoules (kJ) — a unit of energy.
Where are Watt-hours used?
Watt-hours (Wh) — a unit of energy.
How do I convert Watt-hours back to Kilojoules?
Use the Watt-hours to Kilojoules converter.