Cubic centimeters to gallons (UK) conversion calculator above calculates how many gallons (UK) are in 'X' cubic centimeters (where 'X' is the number of cubic centimeters to convert to gallons (UK)). In order to convert a value from cubic centimeters to gallons (UK) (from cm³ to gal) type the number of cm³ to be converted to gal and then click on the 'convert' button.