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The following symbols are used to denote square inches: square in; sq inches, sq inch, sq in; inches/-2, inch/-2, in/-2; inches^2, inch^2, in^2; inches 2, inch 2, in 2 (also denoted by "2) historic engineering drawings ″ (number with a square & a double apostrophe, both as an exponent) The square inch is a common unit of measurement in the ...
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).
conversion combination output units SI: square kilometre: km2 km 2: US spelling: square kilometer: 1.0 km 2 (0.39 sq mi) km2 sqmi; square metre: m2 m 2: US spelling: square meter: 1.0 m 2 (11 sq ft) m2 sqft; square centimetre: cm2 cm 2: US spelling: square centimeter: 1.0 cm 2 (0.16 sq in) cm2 sqin; square millimetre: mm2 mm 2: US spelling ...
1.0 dm 2 (16 sq in) square centimetre: cm2 Q2489298: cm 2: US spelling: square centimeter: 1.0 cm 2 (0.16 sq in) cm2 sqin; square millimetre: mm2 Q2737347: mm 2: US spelling: square millimeter: 1.0 mm 2 (0.0016 sq in) mm2 sqin; non-SI metric: hectare: ha Q35852: ha equivalent to one square hectometre 1.0 ha (2.5 acres) Imperial & US customary ...
When using "hand in" to convert to hands and inches, the rounded hands and inches values are equivalent, and use the same fraction, if any. Special rounding of the inches value only occurs when "hand in" is the output.
As a unit of area, the circular mil can be converted to other units such as square inches or square millimetres. 1 circular mil is approximately equal to: 0.7854 square mils (1 square mil is about 1.273 circular mils) 7.854 × 10 −7 square inches (1 square inch is about 1.273 million circular mils) 5.067 × 10 −10 square metres
The factor–label method can convert only unit quantities for which the units are in a linear relationship intersecting at 0 (ratio scale in Stevens's typology). Most conversions fit this paradigm. An example for which it cannot be used is the conversion between the Celsius scale and the Kelvin scale (or the Fahrenheit scale). Between degrees ...
The United States adopted the conversion factor 1 metre = 39.37 inches by an act in 1866. [30] In 1893, Mendenhall ordered the physical realization of the inch to be based on the international prototype metres numbers 21 and 27, which had been received from the CGPM, together with the previously adopted conversion factor. [31]