Energy Conversion

This is an online energy conversion calculator to convert one unit of energy to another unit of energy. It converts following common energy units: joule (J), kilowatt-hour (kWh), calorie[thermochem.] (calth), calorie[IT] (calIT), Calorie(food) (C), horsepower-hour (hph), foot-pound force (ft-lbf), erg, BTU, hartree (Eh), rydberg (Ry), electronvolt (eV).

Common Energy Units

joule (J): kilowatt-hour (kWh): calorie[thermochem.] (calth):
calorie[IT] (calIT): Calorie(food) (C): horsepower-hour (hph):
foot-pound force (ft-lbf): erg: BTU:
hartree (Eh): rydberg (Ry): electronvolt (eV):

To use this Energy Conversion, follow the steps mentioned bellow,

  • Enter the value for the energy unit to be converted to another energy unit.
  • Click the "Convert Energy" button.
  • This will display the converted energy unit values in the other energy units.
  • The energy unit which is under conversion will be marked with a different color.
  • The value of the energy unit to be converted should be in proper numerical form.

Note: The calculated energy conversion may not be exact. It may be approximate based on the input value of the energy unit under conversion. Also the energy unit conversions for same energy unit may vary based on the country, customery and context of use.