Square metre (m²)
The square metre (symbol: m²) is the coherent SI derived unit of area, defined as the surface area of a square with sides precisely one metre long. Derived directly from the SI base unit of length—the metre, defined by the distance light travels in a vacuum during a specific time interval—it serves as the foundational standard for all scientific and technical area measurements worldwide, from which all metric area units are scaled.
Metric
- Square kilometre (km²)1×10⁻⁶
- Hectare (ha)1×10⁻⁴
- Are (a)0.01
- Square metre (m²)1
- Square decimetre (dm²)100
- Square centimetre (cm²)10,000
- Square millimetre (mm²)1,000,000
- Square micrometre (µm²)1×10¹²
- Square nanometre (nm²)1×10¹⁸
British/American
- Township1.07×10⁻⁸
- Square mile3.86×10⁻⁷
- Homestead1.54×10⁻⁶
- Acre2.47×10⁻⁴
- Rood9.88×10⁻⁴
- Square rod0.04
- Square0.11
- Square yard (yr²)1.2
- Square foot (ft²)10.76
- Square inch (in²)1,550
Other
- Metric dunam1×10⁻³
- Cypriot dunam7.47×10⁻⁴
- Iraqi dunam4×10⁻⁴
- Football pitch1.4×10⁻⁴
Brazilian
- Alqueire paulista4.13×10⁻⁵
- Alqueire mineiro2.07×10⁻⁵
- Alqueire baiano1.03×10⁻⁵
- Alqueire do norte3.68×10⁻⁵