Kilocalories per day to horsepower (metric) conversion calculator shown above calculates how many horsepower (metric) are in 'X' kilocalories per day (where 'X' is the number of kilocalories per day to convert to horsepower (metric)). In order to convert a value from kilocalories per day to horsepower (metric) (from kcal/d to hp) type the number of kcal/d to be converted to hp and then click on the 'convert' button.