What is 4 British Thermal Units in Calories?
4 BTU = 1008.657603 cal
4 British Thermal Units is equal to 1008.657603 Calories.
4 BTU × 252.164401 = 1008.657603 cal
4 British Thermal Units is equal to 1008.657603 Calories.
4 BTU × 252.164401 = 1008.657603 cal