|This website is one over over 500 hosting the Iraq Veterans Memorial.|
|Legal Disclaimer | UVA Home | ITC Home | NIST Home | Metric Links | US Law on Wts./Meas.|
|• Same convertor page with unit choices in alphabetical order… • En français (?)|
Measurement Unit Converter
Please select the number of decimal places shown in results:
|Jump to: Length | Area | Weight | Volume | Energy | Force | Power | Pressure | Speed | Prefixes|
Note: For temperatures only, results are rounded to two decimal places. The Rankine scale (proposed in 1859 by the Scottish physicist William J. M. Rankine) has the same degree units as Fahrenheit, but with zero = absolute zero. The Reaumur scale (invented in 1730 by French naturalist René Antoine Ferchault de Reaumur) has 0 = the freezing point of H2O and 80 = the boiling point.
|Jump to: Temperature | Area | Weight | Volume | Energy | Force | Power | Pressure | Prefixes|
Length / Distance Conversion
Note: in survey measure, a square link = 1/100,000 acre, so a link = 0.66 foot. An engineer’s link = 1 foot. The span (arbitrarily) used here is nine inches and the cubit 18 inches. The enormous Hubble unit (one billion light years or 306.595 megaparsecs) is not included here due to size constraints. FYI, one hubble = about 9.4605 yottameters.
|Jump to: Temperature | Length | Weight | Volume | Energy | Force | Power | Pressure | Prefixes|
Note: There are many other old units of land area, such as the South Asian ‘bigha’ (~.33 acre), the English ‘bovate’ (~15 ac.) and ‘hide’ (about 120 ac.), the Dutch ‘bunder’ (now 1 hectare), the Spanish ‘cabellaria’ (about 40 ha.), the Irish ‘colpa/collop’ (~.6555 ha.) and acre (~1.6 English ac.), the Russian ‘dessiatina’ (1.0925 ha.), the Middle-Eastern ‘dunum’ (~.1 ha.), the North African ‘feddan’ (~.42 ha.), the old French ‘journal’ (~.3-.45 ha.), the Swedish ‘tunnland’ (~.493 ha.) and numerous others.
|Jump to: Temperature | Length | Area | Volume | Energy | Force | Pressure | Power | Prefixes|
|Jump to: Temperature | Length | Area | Weight | Energy | Force | Pressure | Power | Speed | Prefixes|
Apoth.: Apothecaries’ | Avdp.: Avoirdupois | Brit.: British | Imp.: Imperial | Ship.: Shipping | Sur.: Survey
Note: U.S. and state legal definitions of a ‘barrel’ range from 31 to 42 gallons. ‘Liter’ is actually a special name for the cubic decimeter.
|Jump to: Temperature | Length | Area | Weight | Volume | Force | Pressure | Power | Speed | Prefixes|
Note: BTU=British Thermal Unit. A watt is simply a joule per second. Calories/Kcal are the “IT” standard of 1956.
|Jump to: Temperature | Length | Area | Weight | Volume | Energy | Pressure | Speed | Prefixes|
Note: The pound force (lbf) unit represents the force exerted by Earth gravity on a mass of one pound. The poundal is defined as a force which accelerates a one-pound mass at the rate of one foot per second.
|Jump to: Temperature | Length | Area | Weight | Volume | Force | Energy | Pressure | Speed | Prefixes|
Note: The metric horsepower is known in France as the “Cheval Vapeur” (CV) and in Germany as the “pferdestärke”. The horsepower, btw, was defined by James Watt as 550 lbf/sec.
|Jump to: Temperature | Length | Area | Weight | Volume | Energy | Force | Speed | Prefixes|
|Jump to: Temperature | Length | Area | Weight | Volume | Energy | Force | Power | Speed|
|(Most conversion factors are from the tables at the U.S. National Institute of Standards and Technology.)|
Please see UNC Prof. Russ Rowlett’s Dictionary of Units of Measurement for comprehensive(!!) info on measurement units & systems and links to many related sites.