# Icelandic units of measurement

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]

## Unit system before the metric system

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

### Length

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]

### Mass

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]

### Area

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

### Capacity

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

## References

- 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. - 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. - http://www.visindavefur.is/svar.php?id=2940
- http://www.visindavefur.is/svar.php?id=6557