Square metre
The square metre (international spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area with symbol m2.[1]
Adding and subtracting SI prefixes creates multiples and submultiples; however, as the unit is exponentiated, the quantities grow geometrically by the corresponding power of 10. For example, a kilometre is 103 (a thousand) times the length of a metre, but a square kilometre is 1032 (106, a million) times the area of a square metre, and a cubic kilometre is 1033 (109, a billion) cubic metres.
SI prefixes applied
The square metre may be used with all SI prefixes used with the metre.
Multiplication | Name | Symbol | Multiplication | Name | Symbol | |
---|---|---|---|---|---|---|
100 | square metre (centiare) | m2 | 100 | square metre (centiare) | m2 | |
102 | square decametre (are) | dam2 | 10−2 | square decimetre | dm2 | |
104 | square hectometre (hectare) | hm2 | 10−4 | square centimetre | cm2 | |
106 | square kilometre | km2 | 10−6 | square millimetre | mm2 | |
1012 | square megametre | Mm2 | 10−12 | square micrometre | µm2 | |
1018 | square gigametre | Gm2 | 10−18 | square nanometre | nm2 | |
1024 | square terametre | Tm2 | 10−24 | square picometre | pm2 | |
1030 | square petametre | Pm2 | 10−30 | square femtometre | fm2 | |
1036 | square exametre | Em2 | 10−36 | square attometre | am2 | |
1042 | square zettametre | Zm2 | 10−42 | square zeptometre | zm2 | |
1048 | square yottametre | Ym2 | 10−48 | square yoctometre | ym2 | |
Unicode characters
Square metre: Unicode characters.[2] | ||
---|---|---|
Symbol | Name | Unicode number |
㎡ | Square metre (Square M Squared) | U+33A1 |
㎢ | Square kilometre (Square KM Squared) | U+33A2 |
㍸ | Square decimetre (Square DM Squared) | U+3378 |
㎠ | Square centimetre (Square CM Squared) | U+33A0 |
㎟ | Square millimetre (Square MM Squared) | U+339F |
Conversions
A square metre is equal to:
See also
- Conversion of units § Area
- Orders of magnitude (area)
- SI
- SI prefix
Notes
- David R. Lide, ed. (2010), "INTERNATIONAL SYSTEM OF UNITS", CRC Handbook of Chemistry and Physics (90th ed.)
- Unicode Consortium (2019). "The Unicode Standard 12.0 – CJK Compatibility ❰ Range: 3300—33FF ❱" (PDF). Unicode.org. Retrieved May 24, 2019.
External links
- BIPM (SI maintenance agency) (home page)
- BIPM brochure (SI reference)
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