Gigacalories to standard cubic yards conversion calculator shown above calculates how many standard cubic yards are in 'X' gigacalories (where 'X' is the number of gigacalories to convert to standard cubic yards). In order to convert a value from gigacalories to standard cubic yards (from Gcal to scy) type the number of Gcal to be converted to scy and then click on the 'convert' button.