watt-hours to kilowatt-hours
Convert watt-hour to kilowatt-hour — instant, free, with the formula shown.
1 Wh=0.001 kWh
How to convert watt-hour to kilowatt-hour
To convert watt-hour to kilowatt-hour, multiply by 0.001:
kWh = Wh × 0.001
For example, 10 Wh × 0.001 = 0.01 kWh.
Wh to kWh conversion table
| watt-hours (Wh) | kilowatt-hours (kWh) |
|---|---|
| 1 Wh | 0.001 kWh |
| 2 Wh | 0.002 kWh |
| 5 Wh | 0.005 kWh |
| 10 Wh | 0.01 kWh |
| 25 Wh | 0.025 kWh |
| 50 Wh | 0.05 kWh |
| 100 Wh | 0.1 kWh |
| 250 Wh | 0.25 kWh |
| 500 Wh | 0.5 kWh |
| 1000 Wh | 1 kWh |
Other watt-hour conversions
Convert to kilowatt-hour from another unit
Wh to kWh — frequently asked
How many kilowatt-hours are in 1 watt-hour?
1 watt-hour = 0.001 kilowatt-hours (Wh × 0.001 = kWh).
What is the formula to convert watt-hour to kilowatt-hour?
Multiply your watt-hour value by 0.001 to get kilowatt-hour.
How do I convert 10 watt-hours to kilowatt-hours?
10 Wh = 0.01 kWh. For 100 Wh the answer is 0.1 kWh. Use the calculator on this page for any other value.
When to convert watt-hour to kilowatt-hour
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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