# Watt-hours to Kilowatt-hours Conversion

Enter the energy in watt-hours below to get the value converted to kilowatt-hours.

**Results in Kilowatt-hours:**

## How to Convert Watt-hours to Kilowatt-hours

To convert a watt-hour measurement to a kilowatt-hour measurement, divide the energy by the conversion ratio. One kilowatt-hour is equal to 1,000 watt-hours, so use this simple formula to convert:

The energy in kilowatt-hours is equal to the watt-hours divided by 1,000.

**For example,**here's how to convert 500 watt-hours to kilowatt-hours using the formula above.

Watt-hours and kilowatt-hours are both units used to measure energy. Keep reading to learn more about each unit of measure.

## Watt-hours

The watt-hour is a measure of electrical energy equal to one watt of power over a one hour period.

Watt-hours are usually abbreviated as *Wh*, although the formally adopted expression is *W·h*. The abbreviation *W h* is also sometimes used. For example, 1 watt-hour can be written as 1 Wh, 1 W·h, or 1 W h.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.^{[1]}

## Kilowatt-hours

A kilowatt-hour is a measure of electrical energy equal to one kilowatt, or 1,000 watts, of power over a one hour period. Kilowatt-hours are a measure of electrical work performed over a period of time, and are often used as a way of measuring energy usage by electric companies.

Kilowatt-hours are usually abbreviated as *kWh*, although the formally adopted expression is *kW·h*. The abbreviation *kW h* is also sometimes used. For example, 1 kilowatt-hour can be written as 1 kWh, 1 kW·h, or 1 kW h.

## Watt-hour to Kilowatt-hour Conversion Table

Watt-hours | Kilowatt-hours |
---|---|

1 Wh | 0.001 kWh |

2 Wh | 0.002 kWh |

3 Wh | 0.003 kWh |

4 Wh | 0.004 kWh |

5 Wh | 0.005 kWh |

6 Wh | 0.006 kWh |

7 Wh | 0.007 kWh |

8 Wh | 0.008 kWh |

9 Wh | 0.009 kWh |

10 Wh | 0.01 kWh |

20 Wh | 0.02 kWh |

30 Wh | 0.03 kWh |

40 Wh | 0.04 kWh |

50 Wh | 0.05 kWh |

60 Wh | 0.06 kWh |

70 Wh | 0.07 kWh |

80 Wh | 0.08 kWh |

90 Wh | 0.09 kWh |

100 Wh | 0.1 kWh |

200 Wh | 0.2 kWh |

300 Wh | 0.3 kWh |

400 Wh | 0.4 kWh |

500 Wh | 0.5 kWh |

600 Wh | 0.6 kWh |

700 Wh | 0.7 kWh |

800 Wh | 0.8 kWh |

900 Wh | 0.9 kWh |

1,000 Wh | 1 kWh |

## References

- Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019, https://www.bipm.org/utils/common/pdf/si-brochure/SI-Brochure-9-EN.pdf