# Convert Watt hour [Wh] to...

Wh | |
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Unit system | metric |

Unit of | energy |

Symbol | Wh |

Unit conversions | |

1 Wh in ... |
... is equal to ... |

SI units | 3600 J |

Imperial/US unit(s) | 3.412 BTU |

Other unit(s) | 0.8599 kcal |

**I want to convert:**
**using**

Metric | Conversion |
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MWh | |

kWh | |

Wh | |

MJ | |

kJ | |

J | |

Ws | |

erg | |

eV |

British/Imperial | Conversion |
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Quad | |

Therm | |

BTU | |

Foot-pound |

Other | Conversion |
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kcal | |

cal | |

Thermie |

The **kilowatt-hour** (symbol **kWh**) is a derived unit of energy equal to 3.6 megajoules.

If the energy is being transmitted or used at a constant rate (power) over a period of time, the total energy in **kilowatt-hours** is the power in kilowatts multiplied by the time in hours. The kilowatt-hour is commonly used as a billing unit for energy delivered to consumers by electric utilities.

All the SI prefixes are commonly applied to the watt-hour: a **kilowatt-hour** is 1,000 W·h; a megawatt-hour is 1 million W·h; a milliwatt-hour is 1/1000 W·h and so on.

The **kilowatt-hour** is commonly used by electrical distribution providers for purposes of billing, since the monthly energy consumption of a typical residential customer ranges from a few hundred to a few thousand kilowatt-hours.

This article uses material from the Wikipedia article "Kilowatt hour", which is released under the Creative Commons Attribution-Share-Alike License 3.0.