kilowatt-hours to joules
Convert kilowatt-hour to joule — instant, free, with the formula shown.
1 kWh=3600000 J
How to convert kilowatt-hour to joule
To convert kilowatt-hour to joule, multiply by 3600000:
J = kWh × 3600000
For example, 10 kWh × 3600000 = 36000000 J.
kWh to J conversion table
| kilowatt-hours (kWh) | joules (J) |
|---|---|
| 1 kWh | 3600000 J |
| 2 kWh | 7200000 J |
| 5 kWh | 18000000 J |
| 10 kWh | 36000000 J |
| 25 kWh | 90000000 J |
| 50 kWh | 180000000 J |
| 100 kWh | 360000000 J |
| 250 kWh | 900000000 J |
| 500 kWh | 1800000000 J |
| 1000 kWh | 3600000000 J |
Other kilowatt-hour conversions
Convert to joule from another unit
kWh to J — frequently asked
How many joules are in 1 kilowatt-hour?
1 kilowatt-hour = 3600000 joules (kWh × 3600000 = J).
What is the formula to convert kilowatt-hour to joule?
Multiply your kilowatt-hour value by 3600000 to get joule.
How do I convert 10 kilowatt-hours to joules?
10 kWh = 36000000 J. For 100 kWh the answer is 360000000 J. Use the calculator on this page for any other value.
When to convert kilowatt-hour to joule
1Electricity bills (kWh)
2Nutrition labels (kcal / food cal)
3HVAC and heating (BTU, therms)
4Physics and chemistry (J, eV)
Energy conversion — common questions
Is a food calorie the same as a calorie?
No — a food 'Calorie' (capital C) actually means 1 kilocalorie = 1,000 small calories = 4,184 J. Nutrition labels typically write 'cal' meaning kcal.
How many joules in 1 kWh?
1 kWh = 3,600,000 J (3.6 MJ). Because 1 kW × 1 hour = 1,000 W × 3,600 s = 3,600,000 J.
What is a BTU?
British Thermal Unit — the energy required to raise 1 pound of water by 1 °F. 1 BTU ≈ 1,055 J.
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