Full name: barrel [US, beer]
Plural form: barrels
Category type: volume
Scale factor: 0.1173477658
The SI derived unit for volume is the cubic meter.
1 cubic meter is equal to 8.5216790723083 barrel [US, beer].
Valid units must be of the volume type.
You can use this form to select from known units:
The definition of a US beer barrel is 31 US gallons (117.3 litres) based on tax laws.