# Convert Joules to Watt-hours

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, multiply the energy by the conversion ratio. One joule is equal to 0.000278 watt-hours, so use this simple formula to convert:

The energy in watt-hours is equal to the joules multiplied by 0.000278.

**For example,**here's how to convert 5 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. 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 can be abbreviated as *Wh*, for example 1 watt-hour can be written as 1 Wh.

## Joule Measurements and Equivalent Watt-hour Conversions

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 |

11 J | 0.003056 Wh |

12 J | 0.003333 Wh |

13 J | 0.003611 Wh |

14 J | 0.003889 Wh |

15 J | 0.004167 Wh |

16 J | 0.004444 Wh |

17 J | 0.004722 Wh |

18 J | 0.005 Wh |

19 J | 0.005278 Wh |

20 J | 0.005556 Wh |

21 J | 0.005833 Wh |

22 J | 0.006111 Wh |

23 J | 0.006389 Wh |

24 J | 0.006667 Wh |

25 J | 0.006944 Wh |

26 J | 0.007222 Wh |

27 J | 0.0075 Wh |

28 J | 0.007778 Wh |

29 J | 0.008056 Wh |

30 J | 0.008333 Wh |

31 J | 0.008611 Wh |

32 J | 0.008889 Wh |

33 J | 0.009167 Wh |

34 J | 0.009444 Wh |

35 J | 0.009722 Wh |

36 J | 0.01 Wh |

37 J | 0.010278 Wh |

38 J | 0.010556 Wh |

39 J | 0.010833 Wh |

40 J | 0.011111 Wh |

## More Joule Energy Conversions

**Joules**

- Convert to Kilojoules
- 1 J is equal to 0.001 kilojoules
- Convert to Megajoules
- 1 J is equal to 1.0E-6 megajoules
- Convert to Gigajoules
- 1 J is equal to 1.0E-9 gigajoules

**Calories**

- Convert to Calories
- 1 J is equal to 0.239006 calories
- Convert to Kilocalories
- 1 J is equal to 0.000239 kilocalories
- Convert to Megacalories
- 1 J is equal to 2.3901E-7 megacalories

**Watts x Time**

- Convert to Kilowatt-hours
- 1 J is equal to 2.7778E-7 kilowatt-hours
- Convert to Megawatt-hours
- 1 J is equal to 2.7778E-10 megawatt-hours
- Convert to Watt-seconds
- 1 J is equal to 1 watt-seconds

**Thermal Units**

- Convert to British Thermal Units
- 1 J is equal to 0.000948 british thermal units
- Convert to Million BTU
- 1 J is equal to 9.4782E-10 million BTU
- Convert to Therms
- 1 J is equal to 9.4782E-9 therms
- Convert to Quads
- 1 J is equal to 9.4782E-19 quads

**Electronvolts**

- Convert to Electronvolts
- 1 J is equal to 6,241,500,000,000,000,000 electronvolts
- Convert to Kiloelectronvolts
- 1 J is equal to 6,241,500,000,000,000 kiloelectronvolts
- Convert to Megaelectronvolts
- 1 J is equal to 6,241,509,343,260.2 megaelectronvolts