Gallon-atmosphere (UK) to kilojoules converter on this page calculates how many kilojoules are in 'X' gallon-atmosphere (UK) (where 'X' is the number of gallon-atmosphere (UK) to convert to kilojoules). In order to convert a value from gallon-atmosphere (UK) to kilojoules (from gal atm to kJ) simply type the number of gal atm to be converted to kJ and then click on the 'convert' button.