Cubic kilometers to barrels (oil) converter on this page calculates how many barrels (oil) are in 'X' cubic kilometers (where 'X' is the number of cubic kilometers to convert to barrels (oil)). In order to convert a value from cubic kilometers to barrels (oil) (from km³ to bbl) just type the number of km³ to be converted to bbl and then click on the 'convert' button.