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