Gigacalories to Celsius heat units (IT) converter above calculates how many Celsius heat units (IT) are in 'X' gigacalories (where 'X' is the number of gigacalories to convert to Celsius heat units (IT)). In order to convert a value from gigacalories to Celsius heat units (IT) (from Gcal to CHU) just type the number of Gcal to be converted to CHU and then click on the 'convert' button.