You can't answer this question unless you know the dimensions of said barrel and the density of whatever liquid you want to measure the liters of.
One barrel is 159 liters.
it equals 158.98729 litres
1 barrel = 119.24 liters
1 liter equals 1 liter.
1 liter equals 1000 milliliters.
I liter equals about 4 cups. I liter equals about 4 cups.
1 liter is equal to 1000 milliliters.
1 Deca liter
1 liter
There are approximately 202 teaspoons in 1 liter.
1 liter = 1,000 milliliters
1 liter = 10 deciliters (dc)
There are almost 100 types of 'barrel' in use - pick one, then we can answer your question
1 dm3 is equal to 1 liter. They are equivalent volumes, with 1 liter being the same as 1 cubic decimeter.
1 liter = 2.11 pints 1 pint = 0.47 liter