# Watt-hours to Kilojoules Conversion

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

**Results in Kilojoules:**

## How to Convert Watt-hours to Kilojoules

To convert a watt-hour measurement to a kilojoule measurement, multiply the energy by the conversion ratio. One watt-hour is equal to 3.6 kilojoules, so use this simple formula to convert:

The energy in kilojoules is equal to the watt-hours multiplied by 3.6.

**For example,**here's how to convert 5 watt-hours to kilojoules using the formula above.

Watt-hours and kilojoules 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]}

## Kilojoules

One kilojoule is equal to 1,000 joules, which are the energy equal to the force on an object of one newton at a distance of one meter.

The kilojoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "kilo" is the prefix for 10^{3}. Kilojoules can be abbreviated as *kJ*; for example, 1 kilojoule can be written as 1 kJ.

## Watt-hour to Kilojoule Conversion Table

Watt-hours | Kilojoules |
---|---|

1 Wh | 3.6 kJ |

2 Wh | 7.2 kJ |

3 Wh | 10.8 kJ |

4 Wh | 14.4 kJ |

5 Wh | 18 kJ |

6 Wh | 21.6 kJ |

7 Wh | 25.2 kJ |

8 Wh | 28.8 kJ |

9 Wh | 32.4 kJ |

10 Wh | 36 kJ |

11 Wh | 39.6 kJ |

12 Wh | 43.2 kJ |

13 Wh | 46.8 kJ |

14 Wh | 50.4 kJ |

15 Wh | 54 kJ |

16 Wh | 57.6 kJ |

17 Wh | 61.2 kJ |

18 Wh | 64.8 kJ |

19 Wh | 68.4 kJ |

20 Wh | 72 kJ |

21 Wh | 75.6 kJ |

22 Wh | 79.2 kJ |

23 Wh | 82.8 kJ |

24 Wh | 86.4 kJ |

25 Wh | 90 kJ |

26 Wh | 93.6 kJ |

27 Wh | 97.2 kJ |

28 Wh | 100.8 kJ |

29 Wh | 104.4 kJ |

30 Wh | 108 kJ |

31 Wh | 111.6 kJ |

32 Wh | 115.2 kJ |

33 Wh | 118.8 kJ |

34 Wh | 122.4 kJ |

35 Wh | 126 kJ |

36 Wh | 129.6 kJ |

37 Wh | 133.2 kJ |

38 Wh | 136.8 kJ |

39 Wh | 140.4 kJ |

40 Wh | 144 kJ |

## 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