Area converter
Convert square feet, acres, square miles and square meters, plus hectares.
- 🇺🇸 US federal & state rules
- NIST SP 811 conversion factors
- See sources
acres to sq ft
43,560 sq ft
1 acres = 43,560 sq ft
- 1 acres
- 43,560 sq ft
- 1 sq ft
- 0.00002295684114 acres
Results are rounded to 10 significant digits.
Common values, acres to sq ft
| 0.5 acres | 21,780 sq ft |
|---|---|
| 1 acres | 43,560 sq ft |
| 2 acres | 87,120 sq ft |
| 3 acres | 130,680 sq ft |
| 4 acres | 174,240 sq ft |
| 5 acres | 217,800 sq ft |
| 10 acres | 435,600 sq ft |
| 12 acres | 522,720 sq ft |
| 20 acres | 871,200 sq ft |
| 25 acres | 1,089,000 sq ft |
| 50 acres | 2,178,000 sq ft |
| 100 acres | 4,356,000 sq ft |
| 1,000 acres | 43,560,000 sq ft |
1 acres in every unit
| Square inches (sq in) | 6,272,640 sq in |
|---|---|
| Square feet (sq ft) | 43,560 sq ft |
| Square yards (sq yd) | 4,840 sq yd |
| Acres | 1 acres |
| Square miles (sq mi) | 0.0015625 sq mi |
| Square meters (m²) | 4,046.856422 m² |
| Hectares (ha) | 0.4046856422 ha |
| Square kilometers (km²) | 0.004046856422 km² |
- An acre is 43,560 sq ft using the international foot (0.3048 m). The older US survey foot was retired on January 1, 2023, and differs by only 2 parts per million.
Show the math
| To m² | 1 acres × 4,046.856422 = 4,046.856422 m² |
|---|---|
| To sq ft | 4,046.856422 m² ÷ 0.09290304 = 43,560 sq ft |
What to do next
How it works
Each unit is turned into square meters and then into the unit you want. A square foot is exactly 0.09290304 m², an acre is 43,560 sq ft and a hectare is 10,000 m².
Things to keep in mind
Since 2023 the acre is based on the international foot. Old deeds and surveys that used the US survey foot differ by about 2 parts per million, which is under a square foot per acre.
Conversion factors
| 1 acres equals | Value |
|---|---|
| Square inches (sq in) | 6,272,640 sq in |
| Square feet (sq ft) | 43,560 sq ft |
| Square yards (sq yd) | 4,840 sq yd |
| Square miles (sq mi) | 0.0015625 sq mi |
| Square meters (m²) | 4,046.856422 m² |
| Hectares (ha) | 0.4046856422 ha |
| Square kilometers (km²) | 0.004046856422 km² |
Sources
Rules applied as of 2026-10-19. See the sources below for details.
- NIST SP 811, Appendix B.8: Factors for units listed alphabeticallyChecked 2026-10-19
- NIST: U.S. survey foot retired (acre now uses the international foot)Checked 2026-10-19
Frequently asked questions
How many square feet are in an acre?
43,560. An acre is about 4,047 square meters, or roughly 0.405 hectares.
How do I convert square feet to square meters?
Multiply by 0.09290304. A 1,500 sq ft home is about 139.4 m².
How many acres are in a square mile?
640. A square mile is about 2.59 km².
Why not just multiply feet to meters?
Area is squared, so the factor is squared too. One foot is 0.3048 m, but one square foot is 0.3048 × 0.3048 = 0.0929 m².