Fluid barrels to gallons volume conversion table shows the most common values for the quick reference. Alternatively, you may use the converter to convert any other values.
Please note that oil barrels and fluid barrels (beer etc) are different measurement units.
1 Barrel [Fluid] = 31.5 Gallons [US, Fluid]
1 Barrel [Oil] = 42 Gallons [US, Oil]
1 Barrel [Dry] = 26.24975569 Gallons [US, Dry]