US measurement of volume for dry materials. See also US liquid barrels, US dry barrels, US oil barrels and UK barrels.
US gal lqd =
US bbl fed * 31.000
A US capacity measure (for liquid) equal to 4 quarts or 3.785 liters. Note also there are different measures of US dry gallons and UK gallons.
US Barrels (Federal) to US Gallons (Liquid)
Mobile phone converter app