A tønne (plural tønner) is an old Norwegian unit of volume equivalent to a barrel. There was a dry tønne and a liquid tønne. The volume of a tønne has varied over time in Norway, including many local variations. The dry tønne was standardized in 1824 as equivalent to 138.97 liters (3.944 U.S. bu). A tønne of potatoes weighed about 100 kilograms (220 lb). A dry tønne was divided into four fjerdinger, equivalent to 34.71 liters (0.985 U.S. bu) each. The liquid tønne was equivalent to 115.81 liters (25.47 imp gal; 30.59 U.S. gal). In addition, the term tønne (a "barrel of land") was used as a measurement of area equivalent to 3,937 square meters (0.973 acres). This corresponded to the amount of land that could be sown with one tønne of seed.
References
External links Norsk historisk leksikon: Kornmål. (lokalhistorikwiki.no).


