Area converter
Area units are length units squared, so their factors are squared too: a square foot is 0.3048² = 0.092 903 04 m². The acre is defined as 43 560 square feet.
50 m² = 538.1955208 ft²
Formula: ft² = m² × 10.7639104167
50 m² in every area unit
- square centimetre
- hectare
- square kilometre
- square inch
- square foot
- square yard
- acre
- square mile
Popular area conversions
How it works
Why you square the factor
A metre is 3.280 84 ft, but a square metre is not 3.28 ft². Stretch the room below: both sides grow by the factor, so the area grows by the factor times itself.
3 m × 3 m = 9 m²
9.843 ft × 9.843 ft = 96.875 ft²
Each grid cell is one square foot. Ratio: 10.76391 ft² per m², which is 3.280 84².
Every area unit, defined
Each unit expressed in square metres, with its exact definition and source.
| Unit | In m² | Definition | Source |
|---|---|---|---|
| square centimetre (cm²) | 0.0001 | 1 cm² = 0.0001 m² | BIPM SI Brochure |
| square metre (m²) | 1 | 1 m² = 1 m × 1 m | BIPM SI Brochure |
| hectare (ha) | 10,000 | 1 ha = 100 m × 100 m = 10 000 m² | BIPM SI Brochure |
| square kilometre (km²) | 1,000,000 | 1 km² = 1 000 000 m² | BIPM SI Brochure |
| square inch (in²) | 0.00064516 | 1 in² = (0.0254 m)² = 6.4516 cm² | NIST SP 811, App. B (1959 yard & pound agreement) |
| square foot (ft²) | 0.09290304 | 1 ft² = (0.3048 m)² = 0.092 903 04 m² | NIST SP 811, App. B (1959 yard & pound agreement) |
| square yard (yd²) | 0.83612736 | 1 yd² = (0.9144 m)² = 0.836 127 36 m² | NIST SP 811, App. B (1959 yard & pound agreement) |
| acre (ac) | 4,046.8564224 | 1 ac = 43 560 ft² = 4046.856 422 4 m² | NIST SP 811; Federal Register 85 FR 62698 (2020) |
| square mile (mi²) | 2,589,988.110336 | 1 mi² = 640 ac = 2 589 988.110 336 m² | NIST SP 811, App. B (1959 yard & pound agreement) |
Questions
How many square feet are in a square metre?
1 m² = 10.763 910 417 ft² (1 ÷ 0.092 903 04).
How many acres are in a hectare?
1 ha = 2.471 053 815 ac. One acre is 0.404 685 642 ha.
How big is an acre?
An acre is 43 560 ft², or 4046.856 422 4 m².
Why is 1 m² not 3.28 ft²?
Because both sides of the square get multiplied by 3.28, so the area is multiplied by 3.28 × 3.28 ≈ 10.76.