Square metre
Square metre | |
---|---|
Unit system | SI |
Unit of | area |
Symbol | m2 |
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] It is the area of a square with sides one metre in length.
Adding and subtracting SI prefixes creates multiples and submultiples; however, as the unit is exponentiated, the quantities grow exponentially by the corresponding power of 10. For example, 1 kilometre is 103 (one thousand) times the length of 1 metre, but 1 square kilometre is (103)2 (106, one million) times the area of 1 square metre, and 1 cubic kilometre is (103)3 (109, one 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[]
Unicode has several characters used to represent metric area units, but these are for compatibility with East Asian character encodings and are not meant to be used in new documents.[2]
- U+33A1 ㎡ SQUARE M SQUARED)
- U+33A2 ㎢ SQUARE KM SQUARED
- U+3378 ㍸ SQUARE DM SQUARED
- U+33A0 ㎠ SQUARE CM SQUARED
- U+339F ㎟ SQUARE MM SQUARED
Conversions[]
One square metre is equal to:
- 0.000001 square kilometre (km2)
- 10000 square centimetres (cm2)
- 0.0001 hectares (ha)
- 0.001 decares (daa)
- 0.01 ares (a)
- 0.1 deciares (da)
- 1 centiare (ca)
- 0.000247105381 acres
- 0.024710538 cents
- 1.195990 square yards
- 10.763911 square feet
- 1550.0031 square inches
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)
- Units of area
- SI derived units