Square kilometre (km²)
Square kilometre (U.S. spelling: square kilometer), symbol km², is a decimal multiple of SI unit of surface area square metre, one of the SI derived units. It is not used as regular unit of measurement in the US.
Metric
- Square kilometre (km²)1
- Hectare (ha)100
- Are (a)10,000
- Square metre (m²)1,000,000
- Square decimetre (dm²)100,000,000
- Square centimetre (cm²)1×10¹⁰
- Square millimetre (mm²)1×10¹²
- Square micrometre (µm²)1×10¹⁸
- Square nanometre (nm²)1×10²⁴
British/American
- Township0.01
- Square mile0.39
- Homestead1.54
- Acre247.11
- Rood988.42
- Square rod39,536.87
- Square107,639.1
- Square yard (yr²)1,195,990
- Square foot (ft²)10,763,910
- Square inch (in²)1.55×10⁹
Other
- Metric dunam1,000
- Cypriot dunam747.49
- Iraqi dunam400
- Football pitch140.06
Brazilian
- Alqueire paulista41.32
- Alqueire mineiro20.66
- Alqueire baiano10.32
- Alqueire do norte36.76