Type a value in any of the fields to convert between energy value:

Joule | One joule is defined as the amount of energy exerted when a force of one newton is applied over a displacement of one meter. |
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Kilojoule | A kilojoule (or Calorie) is a unit of energy. |

Gram calorie | An older metric system unit of energy, still widely used in food-related contexts. |

Kilocalorie | Also an older metric system unit of energy, still widely used in food-related contexts |

Watt hour | The Watt hour hour is a unit of energy. |

Kilowatt hour | The kilowatt hour is a unit of energy equal to 3.6 megajoules. |

Electronvolt | Electron volt. Electron volt, unit of energy commonly used in atomic and nuclear physics, equal to the energy gained by an electron (a charged particle carrying unit electronic charge) when the electrical potential at the electron increases by one volt. |

British thermal unit | The British thermal unit is a traditional unit of heat; it is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. |

US thermal unit | It is a unit of energy. |

Foot-pound | The foot pound-force (symbol: ft⋅lbf or ft⋅lb) is a unit of work or energy in the Engineering and Gravitational Systems in United States customary and imperial units of measure. |