A firkin is a unit of volume or mass used in several situations.
Contents
American unit of dry measure
A firkin is an American unit of dry measure.
1 firkin = 9 gallons.
British unit for butter and cheese
A firkin was a British unit for the sale of butter and cheese.
1 firkin = 56 pounds = 25 kilograms
British unit of volume for beer
A firkin is also a British unit for the sale of beer. It is one quarter of a barrel and its value depends on the current size of a barrel, but at present:
1 firkin = 0.25 barrel = 9 imperial gallons = 10.8 U.S. gallons = 41 litres
References
Firkin (unit) Wikipedia(Text) CC BY-SA