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

Power (Rate of Energy Use) Calculator
hp W (Watt) kW BTU/min BTU/hr
ft·lbf/s ft·lbf/m cal/s hp (metric)

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.