# Joules to Watt-hours Conversion

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

**Results in Watt-hours:**

## How to Convert Joules to Watt-hours

To convert a joule measurement to a watt-hour measurement, divide the energy by the conversion ratio. One watt-hour is equal to 3,600 joules, so use this simple formula to convert:

The energy in watt-hours is equal to the joules divided by 3,600.

**For example,**here's how to convert 5,000 joules to watt-hours using the formula above.

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

## Joules

The joule is the energy equal to the force on an object of one newton at a distance of one meter.^{[1]} One joule is equal to the heat energy dissipated by the current of one ampere through one ohm of resistance for one second.

One joule is also equal to the energy needed to move an electric charge of one coulomb through a potential difference of one volt. In addition, one joule is also equal to the one watt-second.

The joule is the SI derived unit for energy in the metric system. Joules can be abbreviated as *J*, for example 1 joule can be written as 1 J.

## 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.^{[2]}

## Joule to Watt-hour Conversion Table

Joules | Watt-hours |
---|---|

1 J | 0.000278 Wh |

2 J | 0.000556 Wh |

3 J | 0.000833 Wh |

4 J | 0.001111 Wh |

5 J | 0.001389 Wh |

6 J | 0.001667 Wh |

7 J | 0.001944 Wh |

8 J | 0.002222 Wh |

9 J | 0.0025 Wh |

10 J | 0.002778 Wh |

20 J | 0.005556 Wh |

30 J | 0.008333 Wh |

40 J | 0.011111 Wh |

50 J | 0.013889 Wh |

60 J | 0.016667 Wh |

70 J | 0.019444 Wh |

80 J | 0.022222 Wh |

90 J | 0.025 Wh |

100 J | 0.027778 Wh |

200 J | 0.055556 Wh |

300 J | 0.083333 Wh |

400 J | 0.111111 Wh |

500 J | 0.138889 Wh |

600 J | 0.166667 Wh |

700 J | 0.194444 Wh |

800 J | 0.222222 Wh |

900 J | 0.25 Wh |

1,000 J | 0.277778 Wh |

2,000 J | 0.555556 Wh |

3,000 J | 0.833333 Wh |

4,000 J | 1.1111 Wh |

5,000 J | 1.3889 Wh |

6,000 J | 1.6667 Wh |

7,000 J | 1.9444 Wh |

8,000 J | 2.2222 Wh |

9,000 J | 2.5 Wh |

10,000 J | 2.7778 Wh |

## References

- International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/utils/common/pdf/si-brochure/SI-Brochure-9.pdf
- 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