1 Wh equals 0.001 kWh. To convert Wh to kWh, multiply the value by 0.001; divide by 0.001 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert Wh to kWh?
The conversion formula is kWh = Wh × 0.001. The conversion factor is fixed by definition, so the result is always exact.
Wh to kWh conversion table
| Wh | kWh |
|---|---|
| 1 Wh | 0.001 kWh |
| 2 Wh | 0.002 kWh |
| 5 Wh | 0.005 kWh |
| 10 Wh | 0.01 kWh |
| 100 Wh | 0.1 kWh |
| 1,000 Wh | 1 kWh |
What is Wh (Wh)?
The watt-hour (Wh) is the energy of one watt sustained for one hour, equal to 3,600 joules. It rates small batteries and power banks.
What is kWh (kWh)?
The kilowatt-hour (kWh) is 1,000 watt-hours (3.6 MJ) and the unit on your electricity bill. A typical home uses several kWh per day.
Why convert Wh to kWh?
Energy units come from different fields: joules and kilojoules in physics, kilocalories on food labels, kilowatt-hours on electricity bills, BTU in heating and air-conditioning. Converting between them is common for nutrition, utility bills and HVAC.
One kilocalorie (the food Calorie) equals exactly 4.184 kJ — which is why nutrition labels show both. One kilowatt-hour is 3.6 MJ, equal to about 3,412 BTU or 860 kcal (BIPM/ISO).
How to convert Wh to kWh
- Enter the value in Wh into the left field of the converter.
- Read the result in kWh instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (kWh to Wh).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.