Kilocalories to British thermal units (IT) conversion calculator above calculates how many British thermal units (IT) are in 'X' kilocalories (where 'X' is the number of kilocalories to convert to British thermal units (IT)). In order to convert a value from kilocalories to British thermal units (IT) (from kcal to BTU) just type the number of kcal to be converted to BTU and then click on the 'convert' button.