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