# Calories to Kilowatt-hours Conversion

Enter the energy in calories below to get the value converted to kilowatt-hours.

**Results in Kilowatt-hours:**

## How to Convert Calories to Kilowatt-hours

To convert a calorie measurement to a kilowatt-hour measurement, multiply the energy by the conversion ratio. One calorie is equal to 1.1622E-6 kilowatt-hours, so use this simple formula to convert:

The energy in kilowatt-hours is equal to the calories multiplied by 1.1622E-6.

**For example,**here's how to convert 500,000 calories to kilowatt-hours using the formula above.

Calories and kilowatt-hours 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.

## Kilowatt-hours

A kilowatt-hour is a measure of electrical energy equal to one kilowatt, or 1,000 watts, of power over a one hour period. Kilowatt-hours are a measure of electrical work performed over a period of time, and are often used as a way of measuring energy usage by electric companies.

Kilowatt-hours are usually abbreviated as *kWh*, although the formally adopted expression is *kW·h*. The abbreviation *kW h* is also sometimes used. For example, 1 kilowatt-hour can be written as 1 kWh, 1 kW·h, or 1 kW 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.^{[1]}

## Calorie to Kilowatt-hour Conversion Table

Calories | Kilowatt-hours |
---|---|

1 cal | 0.0000011622 kWh |

2 cal | 0.0000023244 kWh |

3 cal | 0.0000034867 kWh |

4 cal | 0.0000046489 kWh |

5 cal | 0.0000058111 kWh |

6 cal | 0.0000069733 kWh |

7 cal | 0.0000081356 kWh |

8 cal | 0.0000092978 kWh |

9 cal | 0.00001046 kWh |

10 cal | 0.000011622 kWh |

100 cal | 0.000116 kWh |

1,000 cal | 0.001162 kWh |

10,000 cal | 0.011622 kWh |

100,000 cal | 0.116222 kWh |

1,000,000 cal | 1.1622 kWh |

## References

- 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