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