# Joules to Calories Converter

Enter the energy in joules below to get the value converted to calories.

**Results in Calories:**

Do you want to convert calories to joules?

## How to Convert Joules to Calories

To convert a measurement in joules to a measurement in calories, multiply the energy by the following conversion ratio: 0.239006 calories/joule.

Since one joule is equal to 0.239006 calories, you can use this simple formula to convert:

calories = joules × 0.239006

The energy in calories is equal to the energy in joules multiplied by 0.239006.

**For example,**here's how to convert 5 joules to calories using the formula above.

### How Many Calories Are in a Joule?

There are **0.239006** calories in a joule, which is why we use this value in the formula above.

1 J = 0.239006 cal

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

## What Is a Joule?

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.

Learn more about joules.

## What Is a Calorie?

One calorie is equal to the heat needed to raise the temperature of one gram of water from 14.5 to 15.5 degrees Celsius.

When measuring the energy content in foods, the large calorie, or kilocalorie is used, but it's often still just called a "calorie." When both the calorie and large calorie are used in the same context it is common to refer to the calorie as a "small calorie."

Calories can be abbreviated as *cal*; for example, 1 calorie can be written as 1 cal.

Learn more about calories.

## Joule to Calorie Conversion Table

Joules | Calories |
---|---|

1 J | 0.239006 cal |

2 J | 0.478011 cal |

3 J | 0.717017 cal |

4 J | 0.956023 cal |

5 J | 1.195 cal |

6 J | 1.434 cal |

7 J | 1.673 cal |

8 J | 1.912 cal |

9 J | 2.1511 cal |

10 J | 2.3901 cal |

11 J | 2.6291 cal |

12 J | 2.8681 cal |

13 J | 3.1071 cal |

14 J | 3.3461 cal |

15 J | 3.5851 cal |

16 J | 3.8241 cal |

17 J | 4.0631 cal |

18 J | 4.3021 cal |

19 J | 4.5411 cal |

20 J | 4.7801 cal |

21 J | 5.0191 cal |

22 J | 5.2581 cal |

23 J | 5.4971 cal |

24 J | 5.7361 cal |

25 J | 5.9751 cal |

26 J | 6.2141 cal |

27 J | 6.4532 cal |

28 J | 6.6922 cal |

29 J | 6.9312 cal |

30 J | 7.1702 cal |

31 J | 7.4092 cal |

32 J | 7.6482 cal |

33 J | 7.8872 cal |

34 J | 8.1262 cal |

35 J | 8.3652 cal |

36 J | 8.6042 cal |

37 J | 8.8432 cal |

38 J | 9.0822 cal |

39 J | 9.3212 cal |

40 J | 9.5602 cal |

## References

- International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf

## More Joule & Calorie Conversions

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