Kilowatt-hour (kWh)
The billing unit for household electricity.
Result
1 kilowatt-hour = 3,600,000 joules
Kilowatt-hour at a glance
| Unit name | Kilowatt-hour (plural: kilowatt-hours) |
|---|---|
| Symbol | kWh |
| Quantity measured | Energy |
| Measurement system | Metric |
| Also known as | kwh, kilowatt hour, units of electricity |
| Definition exact? | Yes — exact by definition |
1 kilowatt-hour in other energy units
| Unit | 1 kWh equals |
|---|---|
| Joule | 3,600,000 J |
| Kilojoule | 3,600 kJ |
| Megajoule | 3.6 MJ |
| Calorie | 860,420.65 cal |
| Kilocalorie | 860.42065 kcal |
| Watt-hour | 1,000 Wh |
| Megawatt-hour | 0.001 MWh |
| Electronvolt | 2.24694327 × 10²⁵ eV |
| British thermal unit | 3,412.14163 BTU |
| Therm | 0.034121416 thm |
| Foot-pound | 2,655,223.74 ft·lb |
Popular kilowatt-hour conversions
Frequently asked questions
- What is a kilowatt-hour?
- The billing unit for household electricity.
- What is the symbol for the kilowatt-hour?
- The symbol for the kilowatt-hour is kWh. It measures energy.
- How many joules are in a kilowatt-hour?
- 1 kilowatt-hour = 3,600,000 joules.
- How many kilojoules are in a kilowatt-hour?
- 1 kilowatt-hour = 3,600 kilojoules.
- How many kilocalories are in a kilowatt-hour?
- 1 kilowatt-hour = 860.42065 kilocalories.