Convert Watt-hours to Kilowatt-hours
Wh to kWh · energy conversion
What are watt-hours and kilowatt-hours?
A watt-hour is the energy of one watt sustained for one hour, equal to 3,600 J. A kilowatt-hour is 1,000 watt-hours, the unit electric utilities bill by. For reference: a food Calorie is one kilocalorie (4,184 J), and home electricity is billed in kilowatt-hours.
How to convert watt-hours to kilowatt-hours
1 Wh = 0.001 kWh. To convert, multiply the number of watt-hours by 0.001. For example, 5 Wh = 0.005 kWh, and 20 Wh = 0.02 kWh. To go the other way, multiply kilowatt-hours by 1,000 (since 1 kWh = 1,000 Wh).
Watt-hours to Kilowatt-hours conversion table
| Watt-hours (Wh) | Kilowatt-hours (kWh) |
|---|---|
| 1 | 0.001 |
| 10 | 0.01 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1,000 | 1 |
| 2,000 | 2 |
| 5,000 | 5 |
FAQ
What is 1 Wh in kWh?
1 Wh = 0.001 kWh. To convert any amount, multiply the number of watt-hours by 0.001.
How do I convert kilowatt-hours back to watt-hours?
Go the other way: 1 kWh = 1,000 Wh, so multiply kilowatt-hours by 1,000 to get watt-hours.
Is a watt-hour bigger than a kilowatt-hour?
No — 1 Wh is the smaller unit, equal to 0.001 kWh (it takes 1,000 Wh to make one kWh).
Are these energy conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.