Convert tumbler (U.S.) to firkin (U.K. beer)
Selected category: volume.
Definition and details for tumbler (U.S.):
Tumbler is another name for the U.S. cup.
Definition and details for firkin (U.K. beer):
Firkin is a traditional unit of liquid volume equal to 1/4 barrel. U.K. beer firkin (after 1824) is equal to 9 imperial gallons or about 40.91 liters.