Barrels (oil) to tons (displacement) conversion calculator above calculates how many tons (displacement) are in 'X' barrels (oil) (where 'X' is the number of barrels (oil) to convert to tons (displacement)). In order to convert a value from barrels (oil) to tons (displacement) (from bbl to DT) just type the number of bbl to be converted to DT and then click on the 'convert' button.