Select the calculator you wish to use from the list above.

Energy Conversion Calculator
ft·lbf BTU cal (therm) cal (IT) J (Joule)
kWh hp·h eV

To Convert Units: Type a number in the field you would like to convert from (numbers can be entered in scientific notation - i.e., 1.5E-6). Click the Calculate button to display the conversions to the remaining fields.