Calories per hour to kilocalories per second converter on this page calculates how many kilocalories per second are in 'X' calories per hour (where 'X' is the number of calories per hour to convert to kilocalories per second). In order to convert a value from calories per hour to kilocalories per second (from cal/h to kcal/s) just type the number of cal/h to be converted to kcal/s and then click on the 'convert' button.