Convert Watt-hours to Kilowatt-hours
One watt-hour equals 0.001 kilowatt-hours. Type any value to convert watt-hours to kilowatt-hours instantly — with a full reference table below.
Convert Watt-hours to Kilowatt-hours
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How to convert Watt-hours to Kilowatt-hours
To convert watt-hours to kilowatt-hours, multiply by 0.001. One watt-hour equals 0.001 kWh, and one kilowatt-hour equals 1,000 Wh.
- Take the value in watt-hours — for example 7.5 Wh.
- Multiply by 0.001 (the number of kilowatt-hours in one watt-hour).
- 7.5 × 0.001 = 0.0075 kWh.
Shortcut: the factor is a power of ten, so just move the decimal point 3 places to the left.
Watt-hours to Kilowatt-hours conversion table
| Watt-hours | Kilowatt-hours |
|---|---|
| 1 Wh | 0.001 kWh |
| 2 Wh | 0.002 kWh |
| 5 Wh | 0.005 kWh |
| 10 Wh | 0.01 kWh |
| 20 Wh | 0.02 kWh |
| 50 Wh | 0.05 kWh |
| 100 Wh | 0.1 kWh |
| 200 Wh | 0.2 kWh |
| 500 Wh | 0.5 kWh |
| 1,000 Wh | 1 kWh |
| 2,000 Wh | 2 kWh |
| Kilowatt-hours | Watt-hours |
|---|---|
| 1 kWh | 1,000 Wh |
| 2 kWh | 2,000 Wh |
| 5 kWh | 5,000 Wh |
| 10 kWh | 10,000 Wh |
| 20 kWh | 20,000 Wh |
| 50 kWh | 50,000 Wh |
| 100 kWh | 100,000 Wh |
| 200 kWh | 200,000 Wh |
| 500 kWh | 500,000 Wh |
| 1,000 kWh | 1,000,000 Wh |
| 2,000 kWh | 2,000,000 Wh |
About converting Watt-hours to Kilowatt-hours
Watt-hours (Wh) and Kilowatt-hours (kWh) are both units of energy. The exact factor is 1 Wh = 0.001 kWh, so multiply by 0.001 to go from watt-hours to kilowatt-hours (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Kilowatt-hours to Watt-hours converter, or the full unit converter for every unit at once.
Real-world energy in watt-hours and kilowatt-hours
| Example | Watt-hours | Kilowatt-hours |
|---|---|---|
| A 100 W bulb running for one hour | 100 Wh | 0.1 kWh |
| A smartphone battery (≈19 Wh) | ≈ 19.25 Wh | ≈ 0.01925 kWh |
| A 2,000 kcal daily diet | 2,324.444 Wh | 2.324444 kWh |
| One kilowatt-hour | 1,000 Wh | 1 kWh |
“≈” marks typical values; the rest are defined or measured figures.
The units
One watt for one hour: exactly 3,600 J.
Used for: Battery capacity (power banks, laptops).
1,000 watt-hours, exactly 3.6 MJ — the 'unit' on electricity bills.
Used for: Electricity bills and EV batteries.
The thermochemical calorie is exactly 4.184 J and a kilowatt-hour is exactly 3.6 MJ, so these factors are exact.