# Gigajoules to Watt-Hours Converter

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

**Results in Watt-Hours:**

Do you want to convert watt-hours to gigajoules?

## How to Convert Gigajoules to Watt-Hours

To convert a gigajoule measurement to a watt-hour measurement, multiply the energy by the conversion ratio.

Since one gigajoule is equal to 277,777.777778 watt-hours, you can 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.

### How Many Watt-Hours Are in a Gigajoule?

There are **277,777.777778** watt-hours in a gigajoule, which is why we use this value in the formula above.

1 GJ = 277,777.777778 Wh

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

## What is a Gigajoule?

One gigajoule is equal to 1,000,000,000 joules, which is 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 billions, or 10^{9}. Gigajoules can be abbreviated as *GJ*; for example, 1 gigajoule can be written as 1 GJ.

Learn more about gigajoules.

## What is a Watt-Hour?

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]}

Learn more about watt-hours.

## 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/documents/20126/41483022/SI-Brochure-9-EN.pdf

## More Gigajoule & Watt-Hour Conversions

- gigajoules to joules
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- gigajoules to electronvolts
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- joules to watt-hours
- kilojoules to watt-hours
- megajoules to watt-hours
- calories to watt-hours
- kilocalories to watt-hours
- megacalories to watt-hours
- kilowatt-hours to watt-hours
- megawatt-hours to watt-hours
- watt-seconds to watt-hours
- british thermal units to watt-hours
- million BTU to watt-hours
- therms to watt-hours
- quads to watt-hours
- electronvolts to watt-hours
- kiloelectronvolts to watt-hours
- megaelectronvolts to watt-hours