Cambodian units of measurement
{{Short description|Units of measurement used in Cambodia}}
A number of units of measurement have been used in Cambodia to measure length, mass, volume, etc. The metric system has been compulsory there since 1914.{{Cite book|title = International Critical Tables of Numerical Data, Physics, Chemistry and Technology|last = Washburn|first = E.W.|publisher = McGraw-Hil Book Company, Inc|year = 1926|location = New York|pages = 8}}{{Cite book|title = Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins.|last = Cardarelli |first = F.|publisher = Springer|year = 2003|isbn = 978-1-4471-1122-1|location = London|pages = 7}}
System before metric system
=Length=
Several units were used to measure length. One muoi (or mot thuoc) was equal to 1 metre.{{Cite book|title = Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins.|last = Cardarelli |first = F.|publisher = Springer|year = 2003|isbn = 978-1-4471-1122-1|location = London|pages = 146, 147}} Some other units are given below:.
1 phyeam = 2 muoi = 2 m
1 sen = 20 phyeam = 40 muoi = 40 m
1 yoch = 400 sen = 16,000 muoi = 16 km
==Cham am==
The cham am is a unit of length, used during the 18th–20th century in Cambodia.{{citation |title=Cham am |publisher=Sizes.com |accessdate=2008-11-16 |url=http://www.sizes.com/units/cham_am.htm}} It is equivalent to 12 thneap or {{convert|25|cm}}.{{citation |title=World Weights and Measures: Handbook for Statisticians |publisher=United Nations Statistical Office |date=1955 |page=42 |url=https://books.google.com/books?id=OqgIAAAAMAAJ&q=%22Cham+am%22+}}
==Thneap==
The thneap is a unit of length, used during 18th – 20th century in Cambodia.[http://www.sizes.com/units/thneap.htm Sizes website, retrieved 16/11/08] It is equal to {{frac|12}} cham am, {{frac|2|1|12}} cm or about 20.8333 mm.World Weights and Measures: Handbook for Statisticians. United Nations Statistical Office, 1955, p42. [https://books.google.com/books?id=OqgIAAAAMAAJ&q=%22Cham+am%22+]
=Weight=
Several units were used to measure mass. One muoi (mot dong can tay) was equal to 0.600 kg. Some other units are given below:
1 lin = {{frac|3|80}} muoi = 22.5 g
1 hun = 10 lin = {{frac|3|8}} muoi = 225 g
1 chin = 10 hun = {{frac|3|3|4}} muoi = 2.25 kg
1 tael = 10 chin = {{frac|37|1|2}} muoi = 22.5 kg
1 neal = 16 tael = 360 kg
1 pram roi (not can tay) = 1000 muoi = 600 kg
1 chong = 50 neal = 30,000 muoi = 18 t
1 hap (picul) = 20 chong = 600,000 muoi = 360 t
=Capacity=
Several units were used to measure capacity. One sesep (vuong mot gia) was equal to 40 litres. Some other units are given below:
1 muoi (vuong mot ba tay) = {{frac|1|40}} sesep = 1 L
1 kantang = {{frac|3|16}} sesep = 7.5 L
1 tao = 2 kantang = {{frac|3|8}} sesep = 15 L
1 thang = 2 tao = {{frac|3|4}} sesep = 30 L