Rood
Specifically, rood is an old English unit of area, equal to quarter of an acre, i.e. 10 890 square feet or 1011.7141056 m² (for the international inch) or about 10.1 are. A rectangular area with edges of one furlong and one rod respectively is one rood, as is an area consisting of 40 square rods. Confusingly called an acre in some ancient contexts.
Metric
- Square kilometre (km²)1.01×10⁻³
- Hectare (ha)0.1
- Are (a)10.12
- Square metre (m²)1,011.71
- Square decimetre (dm²)101,171.36
- Square centimetre (cm²)10,117,136.2
- Square millimetre (mm²)1.01×10⁹
- Square micrometre (µm²)1.01×10¹⁵
- Square nanometre (nm²)1.01×10²¹
British/American
- Township1.09×10⁻⁵
- Square mile3.91×10⁻⁴
- Homestead1.56×10⁻³
- Acre0.25
- Rood1
- Square rod40
- Square108.9
- Square yard (yr²)1,210
- Square foot (ft²)10,889.99
- Square inch (in²)1,568,159.15
Other
- Metric dunam1.01
- Cypriot dunam0.76
- Iraqi dunam0.4
- Football pitch0.14
Brazilian
- Alqueire paulista0.04
- Alqueire mineiro0.02
- Alqueire baiano0.01
- Alqueire do norte0.04