Se
The se is a traditional Japanese unit of surface area used historically in agricultural land measurement. Equal to 30 tsubo or one-tenth of a tan, one se measures approximately 99.17 square metres. Formally standardized during the Meiji period under the Weights and Measures Law of 1891 in terms of the shaku, the se served as an intermediate unit for mapping small farm plots before Japan mandated full metrication in 1959.
Metric
- Square kilometre (km²)9.92×10⁻¹¹
- Hectare (ha)9.92×10⁻⁹
- Are (a)9.92×10⁻⁷
- Square metre (m²)9.92×10⁻⁵
- Square decimetre (dm²)0.01
- Square centimetre (cm²)0.99
- Square millimetre (mm²)99.17
- Square micrometre (µm²)99,173,586.5
- Square nanometre (nm²)9.92×10¹³
British/American
- Township1.06×10⁻¹²
- Square mile3.83×10⁻¹¹
- Homestead1.53×10⁻¹⁰
- Acre2.45×10⁻⁸
- Rood9.8×10⁻⁸
- Square rod3.92×10⁻⁶
- Square1.07×10⁻⁵
- Square yard (yr²)1.19×10⁻⁴
- Square foot (ft²)1.07×10⁻³
- Square inch (in²)0.15
Other
- Metric dunam9.92×10⁻⁸
- Cypriot dunam7.41×10⁻⁸
- Iraqi dunam3.97×10⁻⁸
- Football pitch1.39×10⁻⁸
Brazilian
- Alqueire paulista4.1×10⁻⁹
- Alqueire mineiro2.05×10⁻⁹
- Alqueire baiano1.02×10⁻⁹
- Alqueire do norte3.65×10⁻⁹