Microwatts to kilocalories per hour converter above calculates how many kilocalories per hour are in 'X' microwatts (where 'X' is the number of microwatts to convert to kilocalories per hour). In order to convert a value from microwatts to kilocalories per hour (from μW to kcal/h) type the number of μW to be converted to kcal/h and then click on the 'convert' button.