Obsolete Finnish units of measurement
The obsolete Finnish units of measurement consist mostly of a variety of units traditionally used in Finland that are similar to those that were traditionally used in other countries and are still used in the United Kingdom and the United States.
Very few of these units are sometimes still used in everyday speech and even when buying and measuring things as shorthand for similar amounts in the metric system. For example, kappa is still used at markets to measure exactly 5 liters of potatoes. When ordering firewood, some customers use syli to refer to a cubic meter, but some old people use the term to refer to various much larger amounts of firewood.
Most Finnish obsolete units of measurement were identical to Swedish units of measurement, including units of length being based on the Swedish "foot" that was defined in 1605, since Finland was part of Sweden from the Middle Ages to 1809, but later some Russian units were also used.
The measurements were first standardized by law in 1665 and were revised in 1735. Before this, measurements often varied between towns. The king's bailiff in the town of Porvoo, for example, used two sets of measures: a big one for collecting tax in kind from the populace and a smaller set to remit the assets to the king, keeping the difference for himself. However, nowadays the proverb mitata Porvoon mitalla has a positive meaning of measuring in excess or generously.
Certain units were standardized to the metric system in 1861, and Finland fully converted to the metric system in 1880.
Length
| Unit | Relative value | Metric value | Imperial value | Notes |
| linja | ~2.06 mm | ~0.081 in | The width of a barleycorn. Cf. barleycorn. | |
| tuuma | ~24.74 mm | ~0.97 in | The width of a thumb. Metrinen tuuma = 25 mm. | |
| vaaksa | ~148.44 mm | ~5.84 in | The distance between the tips of little finger and thumb, when the fingers are fully extended. Today defined as 150 mm. Cf. span. | |
| jalka | 1 | ~296.9 mm | ~11.68 in | The length of a human foot. Cf. foot. |
| kyynärä | 2 | ~593.76 mm | ~1.94 ft | The distance from the elbow to the fingertips. The usual unit on measuring everyday lengths. Metrinen kyynärä = 500 mm. Cf. cubit. |
| syli | 6 | ~1.8 m | ~5.9 ft | Fathom; the distance between the fingertips of both hands when the arms are raised horizontally to the sides. In maritime contexts, syli is of nautical mile. |
| vakomitta | 720 | ~213.6 m | ~700.78 ft | The furrow's length on a field. Cf. furlong. |
| virsta | 3,600 | ~1,068.84 m | ~0.66 mi | 2,672 m 1,068.84 m. Related to the Russian verst. |
| peninkulma | 18,000 | ~5,344.2 m | ~3.32 mi | Before year 1600: 5 virsta. The distance a barking dog can be heard in still air. |
| peninkulma | 36,000 | ~10.6884 km | ~6.64 mi | After year 1600: 10 virsta. |
| päivämatka | 72,000 | ~20 km | ~12.42 mi | The distance of one day's travel. |
Maritime units
- meripeninkulma - 1,852 m. Same as nautical mile. One angular minute at equator.
- kaapelinmitta - 185.2 m. of a nautical mile.
- syli - 1.852 m. of a nautical mile. Used for measuring depth.
- solmu - nautical miles per hour. Same as knot. Speed unit.
- merisekunti* - 30.8666 m. of nautical mile
- meritertia* - 0.51444 m. of nautical mile
Area
| Unit | Relative value | Metric value | Imperial value | Notes |
| kannunala | ~88.15 m2 | ~818.91 sq ft | 1,000 square jalka. | |
| kapanala | ~154 m2 | ~1,430.66 sq ft | of tynnyrinala. The area that could be sown with one bushel of grain. | |
| panninala | ~2,464 m2 | ~22,890.56 sq ft | 16 kapanala, of tynnyrinala. The area that could be sown with one panni of grain. | |
| tynnyrinala | ~4,936.5 m2 | ~45,860.09 sq ft | The area that could be sown with one barrel of grain. | |
| äyrityisenmaa | 1 | 3,926 square kyynärä. The area which grows grain worth of one äyrityinen for taxation. | ||
| äyrinmaa | 3 | 11,777 square kyynärä. The area which grows grain worth of one äyri for taxation. | ||
| penninginmaa | 125 | 490,790 square kyynärä. The area which grows grain worth of one penninki for taxation. |
Volume
Dry measure
| Unit | Relative value | Metric value | Imperial value | Notes |
| jumpru | ~81.8 ml | ~2.9 fl. oz | From Swedish jungfru, virgin. Also for liquids. | |
| kortteli | ~327.15 ml | ~11.51 fl. oz. | Used for both length and volume. Name derives from Swedish kvartdel, meaning "quarter". As unit of length of kyynärä. | |
| tuoppi | 1 | ~1.3274 L | ~46.72 fl. oz | Literally tankard. Also for liquids. |
| kannu | 2 | ~2.6172 L | ~4.61 pt | Lit. "jug". Also called pikkukappa. |
| kappa | 4 | ~5.4961 L | 9.67 pt | Still in use as kappa or isokappa at market places to measure potatoes. |
| nelikko | 32 | ~43.986 L | 38.72 qt | Used for dry measure. |
| panni | 64 | ~87.96 L | 19.36 gal. | Used for dry measure. |
| tynnyri | 128 | ~175 L | 38.49 gal. | Barrel for dry measure. |
| lästi | 1,536 | ~2,110 L | 464.14 gal. | Used for dry measure. |
Liquid measure
| Unit | Relative value | Metric value | Imperial value | Notes |
| jumpru | ~81.8 ml | From Swedish jungfru, virgin. | ||
| kortteli | ~327.15 ml | Used for both length and volume. Name derives from Swedish kvartdel, meaning "quarter". As unit of length of kyynärä. | ||
| tuoppi | 1 | ~1.3274 L | Literally tankard. Used for liquids. | |
| kannu | 2 | ~2.6172 L | Also called pikkukappa. | |
| kappa | 4 | ~5.4961 L | Also for dry substances. | |
| ankkuri | 30 | ~39.26 L | Used for liquid measure. | |
| tynnyri | 96 | ~125.6 L | Barrel for liquid measure. | |
| lästi | 1,152 | ~1,507 L | Used for liquid measure. |
Mass
| Unit | Relative value | Metric value | Imperial value | Notes |
| luoti | ~13.95 g | The weight of a musket ball. | ||
| unssi | ~27.9 g | |||
| markka | 1 | ~213.8 g | Name of the Finnish monetary unit 1861–2002 | |
| naula | 2 | ~425.6 g | metrinen naula = 500 g; the Imperial pound may be translated naula although pauna is exact | |
| leiviskä | 40 | ~8.5004 kg | metrinen leiviskä = 10 kg | |
| sentneri | 200 | ~42.56 kg | 1 Senttaali = 200 metrinen naula = 100 kg. | |
| kippunta | 800 | ~170 kg |
Miscellaneous
- askel - Roughly one meter for an adult male—a rough but convenient way to measure distances while walking.
- hehto – hectoliter, 100 liters, potatoes
- kivenheitto - 100 kyynärä. Today to describe something to be very near.
- poronkusema -. A Sami measurement of distance; the distance a reindeer can travel before needing to stop to urinate. Today used to describe something that is at a very obscure distance away.
- Poronkusemaa kuukaudessa - similar to furlongs per fortnight, about 2.9 mm/s
- tusina - 12
- toltti - 12
- tiu - 20
- puntti - 20
- kerpo - 31
- krossi - 144
- kiihtelys - 40
- riisi - 500
- tonni - 1,000
- motti - 1 m3, also 1 dm3 in "motin pullo", a 1-litre bottle, usually of booze