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