# Gigajoules to Watt-hours Conversion

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

**Results in Watt-hours:**

## How to Convert Gigajoules to Watt-hours

To convert a gigajoule measurement to a watt-hour measurement, multiply the energy by the conversion ratio. One gigajoule is equal to 277,777.777778 watt-hours, so use this simple formula to convert:

The energy in watt-hours is equal to the gigajoules multiplied by 277,777.777778.

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

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

## Gigajoules

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

The gigajoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "giga" is the prefix for 10^{9}. Gigajoules can be abbreviated as *GJ*; for example, 1 gigajoule can be written as 1 GJ.

## 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]}

## Gigajoule to Watt-hour Conversion Table

Gigajoules | Watt-hours |
---|---|

0.00001 GJ | 2.7778 Wh |

0.00002 GJ | 5.5556 Wh |

0.00003 GJ | 8.3333 Wh |

0.00004 GJ | 11.11 Wh |

0.00005 GJ | 13.89 Wh |

0.00006 GJ | 16.67 Wh |

0.00007 GJ | 19.44 Wh |

0.00008 GJ | 22.22 Wh |

0.00009 GJ | 25 Wh |

0.000001 GJ | 0.277778 Wh |

0.00001 GJ | 2.7778 Wh |

0.0001 GJ | 27.78 Wh |

0.001 GJ | 277.78 Wh |

0.01 GJ | 2,778 Wh |

0.1 GJ | 27,778 Wh |

1 GJ | 277,778 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