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