(Redirected from Square meter)
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 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.
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 |
| 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 |
One square metre is equal to:
