Barrels of oil equivalent to kilojoules converter above calculates how many kilojoules are in 'X' barrels of oil equivalent (where 'X' is the number of barrels of oil equivalent to convert to kilojoules). In order to convert a value from barrels of oil equivalent to kilojoules (from BOE to kJ) simply type the number of BOE to be converted to kJ and then click on the 'convert' button.