Kilowatt-hours to Watt-hours Converter
1 kilowatt-hour = 1,000 watt-hours
1 kilowatt-hour equals 1,000 watt-hours
How to convert kilowatt-hours to watt-hours
Calories here are thermochemical (4.184 J), while BTU uses the International Table definition. A kilowatt-hour is energy (3.6 MJ), not power; a food Calorie is a kilocalorie.
Wh = kWh × 1000One kilowatt-hour is 1000 watt-hours, so a single multiplication converts any value.
10,000 Wh = 10 × 1000Kilowatt-hours to watt-hours conversion table
Common values in kilowatt-hours, converted to watt-hours.
| Kilowatt-hours (kWh) | Watt-hours (Wh) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 4 | 4,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
About these units
kilowatt-hourkWh
One kilowatt sustained for one hour: exactly 3.6 megajoules. The billing unit for electricity.
watt-hourWh
One watt sustained for one hour: exactly 3,600 joules.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.