This calculator allows you to convert from Mega Btu (IT) to Calorie (nutritional) and in a reverse direction. To convert from Mega Btu (IT) to Calorie (nutritional), enter the amount of Mega Btu (IT) into the first input and to convert from Calorie (nutritional) to Mega Btu (IT), enter the amount of Calorie (nutritional) into the second input.