Kilowatt-hours to joules
Type a value in kWh to get it in J instantly.
That's 1.67× as much energy as charging an electric car, while a lightning bolt is 14× more. That could lift a one-tonne car 36,710 m into the air.
What it means
What could that energy do?
The hill climb ignores friction and assumes a 1,000 kg car. Food calories on labels are kilocalories.
The math
How to convert kWh to J
To convert kilowatt-hours to joules, multiply by 3,600,000.
Example: 100 kWh × 3,600,000 = 360,000,000 J.
In the other direction, 1 J = 2.778×10⁻⁷ kWh.
Every unit
Your energy in every unit
Tables
kWh to J conversion table
| kWh | J |
|---|---|
| 1 kWh | 3,600,000 J |
| 2 kWh | 7,200,000 J |
| 5 kWh | 18,000,000 J |
| 10 kWh | 36,000,000 J |
| 15 kWh | 54,000,000 J |
| 20 kWh | 72,000,000 J |
| 25 kWh | 90,000,000 J |
| 50 kWh | 180,000,000 J |
| 75 kWh | 270,000,000 J |
| 100 kWh | 360,000,000 J |
| 150 kWh | 540,000,000 J |
| 200 kWh | 720,000,000 J |
| 500 kWh | 1.8×10⁹ J |
| 1,000 kWh | 3.6×10⁹ J |
J to kWh conversion table
| J | kWh |
|---|---|
| 1 J | 2.778×10⁻⁷ kWh |
| 2 J | 5.556×10⁻⁷ kWh |
| 5 J | 1.389×10⁻⁶ kWh |
| 10 J | 2.778×10⁻⁶ kWh |
| 15 J | 4.167×10⁻⁶ kWh |
| 20 J | 5.556×10⁻⁶ kWh |
| 25 J | 6.944×10⁻⁶ kWh |
| 50 J | 1.389×10⁻⁵ kWh |
| 75 J | 2.083×10⁻⁵ kWh |
| 100 J | 2.778×10⁻⁵ kWh |
| 150 J | 4.167×10⁻⁵ kWh |
| 200 J | 5.556×10⁻⁵ kWh |
| 500 J | 0.000138889 kWh |
| 1,000 J | 0.000277778 kWh |
Quick answers
Quick answers
- How many J is 1 kWh?
- 1 kWh is 3,600,000 J.
- How many J is 10 kWh?
- 10 kWh is 36,000,000 J.
- How many J is 100 kWh?
- 100 kWh is 360,000,000 J.
The units
About these units
Kilowatt-hours (kWh)
A kilowatt-hour is 3.6 million joules and the unit on your electricity bill. An electric car battery holds roughly 60 of them.
Joules (J)
The joule is the SI unit of energy: the work done pushing with one newton over one meter. Lifting an apple a meter takes about one joule.
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