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| AREA (Full list) | ||||||
|---|---|---|---|---|---|---|
| system | unit | unit- code |
abbrev- iation |
notes | sample default conversion |
combination output units |
| SI | square kilometre | km2 | km2 | US spelling: square kilometer |
1.0 km2 (0.39 sq mi) |
|
| square metre | m2 | m2 | US spelling: square meter |
1.0 m2 (11 sq ft) |
| |
| square centimetre | cm2 | cm2 | US spelling: square centimeter |
1.0 cm2 (0.16 sq in) |
| |
| square millimetre | mm2 | mm2 | US spelling: square millimeter |
1.0 mm2 (0.0016 sq in) |
| |
| non-SI metric | hectare | ha | ha | 1.0 ha (2.5 acres) | ||
| Imperial & US customary |
square mile | sqmi | sq mi | 1.0 sq mi (2.6 km2) |
| |
| acre | acre | (none) | 1.0 acre (0.40 ha) | |||
| square yard | sqyd | sq yd | 1.0 sq yd (0.84 m2) | |||
| square foot | sqft (sqfoot) |
sq ft | code "sqfoot" will show "square foot" if plural. code "sqfoot" will show "foot" or "feet" depending on value. |
1.0 sq ft (0.093 m2) |
| |
| square inch | sqin | sq in | 1.0 sq in (6.5 cm2) |
| ||
| Other | square nautical mile | sqnmi | sq nmi | 1.0 sq nmi (3.4 km2; 1.3 sq mi) | ||
| dunam | dunam | (none) | For alternative spellings and definitions see the full list | 1.0 dunam (0.0010 km2; 0.00039 sq mi) | ||
| tsubo | tsubo | (none) | 1.0 tsubo (3.3 m2) | |||