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A number of units of measurement were used in Iceland to measure length, mass, area, capacity, etc. Since 1907, the metric system has been compulsory in Iceland.^{[1]}^{[2]}

A number of units were used and these units were analogues to Danish.

A number of units were used in Iceland to measure length. One foot (*fet*) was equal to 0.31385 m and one nautical mile (*sjómíla*) was equal to 1,855 m, as they were defined by their metric equivalents.^{[1]} Some other units are given below:^{[1]}^{[3]}

- 1 line (
*lína*) = ^{1}⁄_{144}feet - 1 inch (
*þumlungur*) = ^{1}⁄_{12}feet - 1 alin = 2 feet
- 1 fathom
*(faðmur)*= 6 feet - 1 míla á landi (or landmíla) = 24,000 feet
- Þingmannaleið = 20,000 faðmar = 120,000 feet
^{[4]}

A number of units were used to measure mass. One pound (*pund*) was equal to 0.5 kg as it was defined by its metric equivalent.^{[1]} Some other units are given below:^{[1]}^{[3]}

- 1 mark (
*mörk*) = ^{1}⁄_{2}pound^{[5]} - 1 fisk = 8 pounds
- 1 fierding = 40 pounds
- 1 liespund = 64 pounds
- 1 barrel of butter (
*tunna smjörs*) = 224 pounds - 1 skippund = 320 pounds
- 1 batt = 320 pounds

A number of units were used to measure area. One square fathom was equal to 3.546 m^{2} and one square mile was equal to 56.7383 km^{2}, as they were defined by their metric equivalents.^{[1]} Some other units are given below:^{[1]}

- 1 square inches =
^{1}⁄_{5,184}square fathom - 1 square feet =
^{1}⁄_{36}square fathom - 1 square alin =
^{1}⁄_{9}square fathom - 1 túndagslátta = 900 square fathom
- 1 engjateigur = 1,600 square fathom

A number of units were used to measure capacity. One pot (*pottur*) was equal to 0.9661 l as it was defined by its metric equivalent.^{[1]} Some other units are given below:^{[1]}^{[3]}

- 1 kornskeppa = 18 pots
- 1 anker = 39 pots
- 1 general barrel (
*almenn tunna*) = 120 pots - 1 barrel of ale (
*öltunna*) = 136 pots - 1 korntunna = 144 pots

- ^
^{a}^{b}^{c}^{d}^{e}^{f}^{g}^{h}^{i}Washburn, E.W. (1926).*International Critical Tables of Numerical Data, Physics, Chemistry and Technology*. New York: McGraw-Hil Book Company, Inc. p. 8. **^**Cardarelli, F. (2003).*Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins*. London: Springer. p. 7. ISBN 978-1-4471-1122-1.- ^
^{a}^{b}^{c}Cardarelli, F. (2003).*Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins*. London: Springer. pp. 117, 118. ISBN 978-1-4471-1122-1. **^**[www.visindavefur.is]**^**[www.visindavefur.is]