J to kWh Converter
Convert J to kWh: 1 J = 2.777777778 × 10⁻⁷ kWh. Formula, worked example, table of common values and unit definitions.
Result2 kWh
1 J = 2.777777778 × 10⁻⁷ kWh
7,200,000 J =
2 kWh
Formula
kWh = J × 2.777777778 × 10⁻⁷ J = kWh × 3,600,000
Worked example
- 7,200,000 J × 2.777777778 × 10⁻⁷ = 2 kWh
Common values
| J | kWh |
|---|---|
| 3,600 | 0.001 |
| 36,000 | 0.01 |
| 360,000 | 0.1 |
| 3,600,000 | 1 |
| 7,200,000 | 2 |
| 36,000,000 | 10 |
Unit definitions
| Unit | Equals | What it is |
|---|---|---|
| J | 1 J | Joule, the SI unit of energy: one watt-second. |
| kWh | 3,600,000 J | Kilowatt-hour. The billing unit for electricity: one kilowatt for one hour. |
Frequently asked questions
How many kWh are in one J?
1 J = 2.777777778 × 10⁻⁷ kWh.
What is the formula to convert J to kWh?
kWh = J × 2.777777778 × 10⁻⁷. To go back, J = kWh × 3,600,000.
Why are there 3.6 million joules in a kWh?
One kW is 1,000 J every second, and an hour has 3,600 seconds, so one kWh is 1,000 × 3,600 = 3,600,000 J.
Related
Opposite direction: kWh to J
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