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