Horsepower (mechanical) to ergs per second conversion calculator above calculates how many ergs per second are in 'X' horsepower (mechanical) (where 'X' is the number of horsepower (mechanical) to convert to ergs per second). In order to convert a value from horsepower (mechanical) to ergs per second (from hp to erg/s) just type the number of hp to be converted to erg/s and then click on the 'convert' button.