How do you convert 12 liters to barrels?

Answer 1

You look up the definition of a "barrel", for example the Wikipedia article on "barrel (unit)", decide which definition you want to use (there are several), check how many liters your chosen "barrel" has, then divide the 12 liters by this number.

Answer 2

To convert liters to barrels, you can use the conversion factor that 1 barrel is approximately equal to 159 liters. Therefore, to convert 12 liters to barrels, you would divide 12 by 159, resulting in approximately 0.075 barrels.