This conversion table for surface measurements is designed to simplify everyday life in technical environments where both metric and English units are used. The table provides a quick and reliable overview of common conversions between, for example, square inches, square feet, square meters and hectares. It is particularly useful when sizing equipment, calculating sealing surfaces, selecting material sizes or analyzing process surfaces in industry.
Conversion table for surface measurements (m², cm², ha, acre, square feet, etc.)
| Surface dimensions | sq in | sq ft | sq yd | sq mile | cm² | dm² | m² | a | ha | km² |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 sq in | 1 | 6.452 | 0.06452 | |||||||
| 1 sq ft | 144 | 1 | 0.1111 | 929 | 9.29 | 0.0929 | ||||
| 1 sq yd | 1296 | 9 | 1 | 8361 | 83.61 | 0.8361 | ||||
| 1 sq mile | 1 | 259 | 2.59 | |||||||
| 1 cm² (1 sq. in.) | 0.155 | 1 | 0.01 | |||||||
| 1 dm² | 15.5 | 0.1076 | 0.01196 | 100 | 1 | 0.01 | ||||
| 1 m² | 1550 | 10.76 | 1.196 | 10000 | 100 | 1 | 0.1 | |||
| 1 a | 1076 | 119.6 | 10000 | 100 | 1 | 0.1 | ||||
| 1 ha | 10000 | 100 | 1 | 0.01 | ||||||
| 1 sq. km | 0.3861 | 10000 | 100 | 1 |
Common surface units and their abbreviations
- cm² (square centimeters) - small surfaces, precision, details in technology/electronics.
- dm² (square decimeters) - medium-sized surfaces, panels and laboratory materials.
- m² (square meters) - most common unit for rooms, floors, ground and technical surfaces.
- a (ar) - 100 m², used in land surveying.
- ha (hectares) - 10 000 m², common in agriculture and forestry.
- km² (square kilometers) - very large geographical areas.
- sq in (square inch / kvadrattum) - small technical measures, mainly in the US/UK.
- sq ft (square foot / kvadratfot) - construction & real estate in English-speaking countries.
- sq yd (square yard / kvadratyard) - textiles, carpets, some building surfaces.
- sq mile (square mile) - large geographical areas in the US/UK.
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