Convert Kilowatt-hours to Watt-hours
One kilowatt-hour equals 1,000 watt-hours. Type any value to convert kilowatt-hours to watt-hours instantly — with a full reference table below.
Convert Kilowatt-hours to Watt-hours
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How to convert Kilowatt-hours to Watt-hours
To convert kilowatt-hours to watt-hours, multiply by 1,000. One kilowatt-hour equals 1,000 Wh, and one watt-hour equals 0.001 kWh.
- Take the value in kilowatt-hours — for example 7.5 kWh.
- Multiply by 1,000 (the number of watt-hours in one kilowatt-hour).
- 7.5 × 1,000 = 7,500 Wh.
Shortcut: the factor is a power of ten, so just move the decimal point 3 places to the right.
Kilowatt-hours to Watt-hours conversion table
| 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 |
| 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 |
About converting Kilowatt-hours to Watt-hours
Kilowatt-hours (kWh) and Watt-hours (Wh) are both units of energy. The exact factor is 1 kWh = 1,000 Wh, so multiply by 1,000 to go from kilowatt-hours to watt-hours (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Watt-hours to Kilowatt-hours converter, or the full unit converter for every unit at once.
Real-world energy in kilowatt-hours and watt-hours
| Example | Kilowatt-hours | Watt-hours |
|---|---|---|
| A 100 W bulb running for one hour | 0.1 kWh | 100 Wh |
| A smartphone battery (≈19 Wh) | ≈ 0.01925 kWh | ≈ 19.25 Wh |
| A 2,000 kcal daily diet | 2.324444 kWh | 2,324.444 Wh |
| One kilowatt-hour | 1 kWh | 1,000 Wh |
“≈” marks typical values; the rest are defined or measured figures.
The units
1,000 watt-hours, exactly 3.6 MJ — the 'unit' on electricity bills.
Used for: Electricity bills and EV batteries.
One watt for one hour: exactly 3,600 J.
Used for: Battery capacity (power banks, laptops).
The thermochemical calorie is exactly 4.184 J and a kilowatt-hour is exactly 3.6 MJ, so these factors are exact.