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equivalent to one square hectometre 1.0 ha (2.5 acres) Imperial & US customary: square mile: sqmi Q232291: sq mi 1.0 sq mi (2.6 km 2) sqmi km2; acre: acre Q81292 (none) 1.0 acre (0.40 ha) square yard: sqyd Q1550511: sq yd 1.0 sq yd (0.84 m 2) square foot: sqft (ft2, sqfoot, foot2) Q857027: sq ft long code "sqfoot (foot2)" outputs square foot ...
Conversions between units in the metric system are defined by their prefixes (for example, 1 kilogram = 1000 grams, 1 milligram = 0.001 grams) and are thus not listed in this article. Exceptions are made if the unit is commonly known by another name (for example, 1 micron = 10 −6 metre).
In the cases where non-SI units are used, the numerical calculation of a formula can be done by first working out the factor, and then plug in the numerical values of the given/known quantities. For example, in the study of Bose–Einstein condensate , [ 6 ] atomic mass m is usually given in daltons , instead of kilograms , and chemical ...
For example, the NIST document has 1 square mile = 2.589 988 E+06 square meters. The convert template has 1 square mile = 2,589,988.110336 square meters. Values for the fundamental physical constants come from the NIST Reference on Constants, Units, and Uncertainty , either the 2010 or the 2014 version.
Comparison of 1 square metre with some Imperial and metric units of area The square metre ( international spelling as used by the International Bureau of Weights and Measures ) or square meter ( American spelling ) is the unit of area in the International System of Units (SI) with symbol m 2 . [ 1 ]
The entire yellow square is one square mile. The hectare (/ ˈ h ɛ k t ɛər,-t ɑːr /; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm 2), that is, 10,000 square metres (10,000 m 2), and is primarily used in the measurement of land. There are 100 hectares in one square kilometre.
The square is an Imperial unit of area that is used in the construction industry in the United States and Canada, [1] and was historically used in Australia. One square is equal to 100 square feet . Examples where the unit is used are roofing shingles, metal roofing, vinyl siding, and fibercement siding products.
Metric units are units based on the metre, gram or second and decimal (power of ten) multiples or sub-multiples of these. According to Schadow and McDonald, [1] metric units, in general, are those units "defined 'in the spirit' of the metric system, that emerged in late 18th century France and was rapidly adopted by scientists and engineers.