Megacalories to Celsius heat units (IT) conversion calculator above calculates how many Celsius heat units (IT) are in 'X' megacalories (where 'X' is the number of megacalories to convert to Celsius heat units (IT)). In order to convert a value from megacalories to Celsius heat units (IT) (from Mcal to CHU) simply type the number of Mcal to be converted to CHU and then click on the 'convert' button.