kWh to J Converter
Convert kWh to J: 1 kWh = 3,600,000 J. Formula, worked example, table of common values and unit definitions.
Result7,200,000 J
1 kWh = 3,600,000 J
2 kWh =
7,200,000 J
Formula
J = kWh × 3,600,000 kWh = J × 2.777777778 × 10⁻⁷
Worked example
- 2 kWh × 3,600,000 = 7,200,000 J
Common values
| kWh | J |
|---|---|
| 0.001 | 3,600 |
| 0.01 | 36,000 |
| 0.1 | 360,000 |
| 1 | 3,600,000 |
| 2 | 7,200,000 |
| 10 | 36,000,000 |
Unit definitions
| Unit | Equals | What it is |
|---|---|---|
| kWh | 3,600,000 J | Kilowatt-hour. The billing unit for electricity: one kilowatt for one hour. |
| J | 1 J | Joule, the SI unit of energy: one watt-second. |
Frequently asked questions
How many J are in one kWh?
1 kWh = 3,600,000 J.
What is the formula to convert kWh to J?
J = kWh × 3,600,000. To go back, kWh = J × 2.777777778 × 10⁻⁷.
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: J to kWh
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