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