# Calories to Joules Conversion

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

**Results in Joules:**

## How to Convert Calories to Joules

To convert a calorie measurement to a joule measurement, multiply the energy by the conversion ratio. One calorie is equal to 4.184 joules, so use this simple formula to convert:

The energy in joules is equal to the calories multiplied by 4.184.

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

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

## Calories

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.

## 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.

## Calorie to Joule Conversion Table

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

1 cal | 4.184 J |

2 cal | 8.368 J |

3 cal | 12.55 J |

4 cal | 16.74 J |

5 cal | 20.92 J |

6 cal | 25.1 J |

7 cal | 29.29 J |

8 cal | 33.47 J |

9 cal | 37.66 J |

10 cal | 41.84 J |

11 cal | 46.02 J |

12 cal | 50.21 J |

13 cal | 54.39 J |

14 cal | 58.58 J |

15 cal | 62.76 J |

16 cal | 66.94 J |

17 cal | 71.13 J |

18 cal | 75.31 J |

19 cal | 79.5 J |

20 cal | 83.68 J |

21 cal | 87.86 J |

22 cal | 92.05 J |

23 cal | 96.23 J |

24 cal | 100.42 J |

25 cal | 104.6 J |

26 cal | 108.78 J |

27 cal | 112.97 J |

28 cal | 117.15 J |

29 cal | 121.34 J |

30 cal | 125.52 J |

31 cal | 129.7 J |

32 cal | 133.89 J |

33 cal | 138.07 J |

34 cal | 142.26 J |

35 cal | 146.44 J |

36 cal | 150.62 J |

37 cal | 154.81 J |

38 cal | 158.99 J |

39 cal | 163.18 J |

40 cal | 167.36 J |

## 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