# Convert Calories to British Thermal Units

Enter the energy in calories below to get the value converted to british thermal units.

**Results in British Thermal Units:**

## How to Convert Calories to British Thermal Units

To convert a calorie measurement to a british thermal unit measurement, multiply the energy by the conversion ratio. One calorie is equal to 0.003966 british thermal units, so use this simple formula to convert:

The energy in british thermal units is equal to the calories multiplied by 0.003966.

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

Calories and british thermal units 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.

## British Thermal Units

British thermal units are a measure of heat energy. Specifically, one british thermal unit is equal to the amount of heat energy required to increase the temperature of one pound of water one degree Fahrenheit. They are often used as a way to rate the energy heat producing appliances such furnaces, and to price heating fuels such as natural gas.

The british thermal unit is a US customary unit of energy. British thermal units can be abbreviated as *BTU*, for example 1 british thermal unit can be written as 1 BTU.

## Calorie Measurements and Equivalent British Thermal Unit Conversions

Calories | British Thermal Units |
---|---|

1 cal | 0.003966 BTU |

2 cal | 0.007931 BTU |

3 cal | 0.011897 BTU |

4 cal | 0.015863 BTU |

5 cal | 0.019828 BTU |

6 cal | 0.023794 BTU |

7 cal | 0.02776 BTU |

8 cal | 0.031725 BTU |

9 cal | 0.035691 BTU |

10 cal | 0.039657 BTU |

11 cal | 0.043622 BTU |

12 cal | 0.047588 BTU |

13 cal | 0.051554 BTU |

14 cal | 0.055519 BTU |

15 cal | 0.059485 BTU |

16 cal | 0.063451 BTU |

17 cal | 0.067416 BTU |

18 cal | 0.071382 BTU |

19 cal | 0.075348 BTU |

20 cal | 0.079313 BTU |

21 cal | 0.083279 BTU |

22 cal | 0.087245 BTU |

23 cal | 0.09121 BTU |

24 cal | 0.095176 BTU |

25 cal | 0.099142 BTU |

26 cal | 0.103107 BTU |

27 cal | 0.107073 BTU |

28 cal | 0.111039 BTU |

29 cal | 0.115004 BTU |

30 cal | 0.11897 BTU |

31 cal | 0.122936 BTU |

32 cal | 0.126901 BTU |

33 cal | 0.130867 BTU |

34 cal | 0.134833 BTU |

35 cal | 0.138798 BTU |

36 cal | 0.142764 BTU |

37 cal | 0.14673 BTU |

38 cal | 0.150695 BTU |

39 cal | 0.154661 BTU |

40 cal | 0.158627 BTU |

## More Calorie Energy Conversions

**Joules**

- Convert to Joules
- 1 cal is equal to 4.184 joules
- Convert to Kilojoules
- 1 cal is equal to 0.004184 kilojoules
- Convert to Megajoules
- 1 cal is equal to 4.184E-6 megajoules
- Convert to Gigajoules
- 1 cal is equal to 4.184E-9 gigajoules

**Calories**

- Convert to Kilocalories
- 1 cal is equal to 0.001 kilocalories
- Convert to Megacalories
- 1 cal is equal to 1.0E-6 megacalories

**Watts x Time**

- Convert to Watt-hours
- 1 cal is equal to 0.001162 watt-hours
- Convert to Kilowatt-hours
- 1 cal is equal to 1.1622E-6 kilowatt-hours
- Convert to Megawatt-hours
- 1 cal is equal to 1.1622E-9 megawatt-hours
- Convert to Watt-seconds
- 1 cal is equal to 4.184 watt-seconds

**Thermal Units**

- Convert to Million BTU
- 1 cal is equal to 3.9657E-9 million BTU
- Convert to Therms
- 1 cal is equal to 3.9657E-8 therms
- Convert to Quads
- 1 cal is equal to 3.9657E-18 quads

**Electronvolts**

- Convert to Electronvolts
- 1 cal is equal to 26,114,000,000,000,000,000 electronvolts
- Convert to Kiloelectronvolts
- 1 cal is equal to 26,114,000,000,000,000 kiloelectronvolts
- Convert to Megaelectronvolts
- 1 cal is equal to 26,114,475,092,200.6 megaelectronvolts