Acres to Square Feet Calculator
Convert acres to square feet: 1 acre = 43,560 sq ft. Enter your acreage to get the exact square footage.
Last updated:Conversion Formula
1 acre = 43,560 square feet = 4,840 square yards = 0.4047 hectares
Quick Reference
| Acres | Square Feet |
|---|---|
| 0.10 acre | 4,356 sq ft |
| 0.25 acre | 10,890 sq ft |
| 0.50 acre | 21,780 sq ft |
| 0.75 acre | 32,670 sq ft |
| 1 acre | 43,560 sq ft |
| 2 acres | 87,120 sq ft |
| 5 acres | 217,800 sq ft |
| 10 acres | 435,600 sq ft |
| 100 acres | 4,356,000 sq ft |
| 640 acres (1 sq mile) | 27,878,400 sq ft |
Typical Acreage Examples
- 0.25 acre — typical suburban lot with a 2,000–2,500 sq ft house.
- 1 acre — large residential lot, small hobby farm.
- 5 acres — small farm or horse property.
- 40 acres — "a forty," traditional US land parcel.
- 640 acres — one square mile, or a "section" in US land surveys.
FAQ
How do I multiply acres to get square feet?
Multiply by 43,560. For a rough mental shortcut, multiply by 40,000 and add 10%.
How big is 1 acre in dimensions?
An acre can be any shape. If square, it's about 208.7 ft on each side. If it's 1 chain wide (66 ft), it's 660 ft long — the historic origin of the word.
How many square feet are in 0.5 and 0.25 acre?
Half an acre = 21,780 sq ft. Quarter acre = 10,890 sq ft. An eighth acre = 5,445 sq ft.
Is a US acre the same as an international acre?
Yes for everyday use. They differ by only a few parts per million because of slightly different foot definitions (US survey foot vs. international foot). Both are 43,560 sq ft.
How do I convert acres to hectares or square meters?
1 acre = 0.4047 hectares = 4,046.86 m². You can also go via sq ft using our sq ft → hectares or sq ft → m² converters.