Square
The square is an Imperial unit of area used primarily in construction, roofing, and building trades in North America and Australia. Defined as equal to 100 square feet (approx. 9.29 square metres), it provides a convenient scale for ordering roofing materials like shingles or siding. Standardized alongside imperial trades in the 19th century, it remains an industry standard despite widespread metrication in other sectors.
Metric
- Square kilometre (km²)9.29×10⁻⁶
- Hectare (ha)9.29×10⁻⁴
- Are (a)0.09
- Square metre (m²)9.29
- Square decimetre (dm²)929.03
- Square centimetre (cm²)92,903.04
- Square millimetre (mm²)9,290,304.36
- Square micrometre (µm²)9.29×10¹²
- Square nanometre (nm²)9.29×10¹⁸
British/American
- Township9.96×10⁻⁸
- Square mile3.59×10⁻⁶
- Homestead1.43×10⁻⁵
- Acre2.3×10⁻³
- Rood0.01
- Square rod0.37
- Square1
- Square yard (yr²)11.11
- Square foot (ft²)100
- Square inch (in²)14,400
Other
- Metric dunam0.01
- Cypriot dunam0.01
- Iraqi dunam3.72×10⁻³
- Football pitch1.3×10⁻³
Brazilian
- Alqueire paulista3.84×10⁻⁴
- Alqueire mineiro1.92×10⁻⁴
- Alqueire baiano9.59×10⁻⁵
- Alqueire do norte3.42×10⁻⁴