# Kilojoules to Watt-hours Conversion

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

**Results in Watt-hours:**

## How to Convert Kilojoules to Watt-hours

To convert a kilojoule measurement to a watt-hour measurement, multiply the energy by the conversion ratio. One kilojoule is equal to 0.277778 watt-hours, so use this simple formula to convert:

The energy in watt-hours is equal to the kilojoules multiplied by 0.277778.

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

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

## 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-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]}

## Kilojoule to Watt-hour Conversion Table

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

1 kJ | 0.277778 Wh |

2 kJ | 0.555556 Wh |

3 kJ | 0.833333 Wh |

4 kJ | 1.1111 Wh |

5 kJ | 1.3889 Wh |

6 kJ | 1.6667 Wh |

7 kJ | 1.9444 Wh |

8 kJ | 2.2222 Wh |

9 kJ | 2.5 Wh |

10 kJ | 2.7778 Wh |

11 kJ | 3.0556 Wh |

12 kJ | 3.3333 Wh |

13 kJ | 3.6111 Wh |

14 kJ | 3.8889 Wh |

15 kJ | 4.1667 Wh |

16 kJ | 4.4444 Wh |

17 kJ | 4.7222 Wh |

18 kJ | 5 Wh |

19 kJ | 5.2778 Wh |

20 kJ | 5.5556 Wh |

21 kJ | 5.8333 Wh |

22 kJ | 6.1111 Wh |

23 kJ | 6.3889 Wh |

24 kJ | 6.6667 Wh |

25 kJ | 6.9444 Wh |

26 kJ | 7.2222 Wh |

27 kJ | 7.5 Wh |

28 kJ | 7.7778 Wh |

29 kJ | 8.0556 Wh |

30 kJ | 8.3333 Wh |

31 kJ | 8.6111 Wh |

32 kJ | 8.8889 Wh |

33 kJ | 9.1667 Wh |

34 kJ | 9.4444 Wh |

35 kJ | 9.7222 Wh |

36 kJ | 10 Wh |

37 kJ | 10.28 Wh |

38 kJ | 10.56 Wh |

39 kJ | 10.83 Wh |

40 kJ | 11.11 Wh |

## 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