What is bigger than a gallon?
One gallon (gal) is the basic unit of liquid measure. A barrel is equal to 31.5 gallons, and a hogshead is 63 gallons (or two barrels).
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One gallon (gal) is the basic unit of liquid measure. A barrel is equal to 31.5 gallons, and a hogshead is 63 gallons (or two barrels).