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