Firkin (unit) 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 Firkin (unit) A firkin is a unit of volume or mass used in several situations. Its etymology is likely to be from the Middle English "ferdekyn", probably from the Middle Dutch diminutive of vierde ‘fourth’ (a firkin originally contained a quarter of a barrel). A firkin is an American unit of dry measure. 1 firkin = 9 US gallons = 34 litres. A firkin was a British unit
Tub (unit) a tub of salt was 18 Imperial gallons. Tub (unit) Tub was a unit of capacity or of weight used in Britain and elsewhere. British laws for the sale of goods defined a tub of butter as a receptacle of a size which could contain 84 pounds of butter. 1 tub of butter or cheese = 84 pounds 1 tub = 1.5 Firkin (1 Firkin = 56 lbs) 1 tub = The "Oxford English Dictionary" has quotations illustrating other values of a "tub" as a unit: In Newfoundland, Canada, a tub of coal was defined as 100 pounds, while a