Acreage Calculator
Turn lot dimensions into acres. Enter a rectangular, triangular or four-sided plot in feet, yards, meters or miles and get acres, hectares and square feet.
- Square feet
- 43,560
- Hectares
- 0.404686
- Square meters
- 4,046.86
- Square yards
- 4,840
- Square miles
- 0.0015625
How big is an acre?
An acre is 43,560 square feet — historically the land one ox team could plow in a day, defined as a strip one furlong (660 ft) long and one chain (66 ft) wide. It doesn't have to be that shape: any plot of 43,560 ft² is an acre. A square acre is about 208.7 ft on each side, and an American football field without end zones (360 × 160 ft) is about 1.32 acres.
| Acres | Square feet | Square side |
|---|---|---|
| 0.25 | 10,890 | 104.4 ft |
| 0.5 | 21,780 | 147.6 ft |
| 1 | 43,560 | 208.7 ft |
| 2 | 87,120 | 295.2 ft |
| 5 | 217,800 | 466.7 ft |
| 10 | 435,600 | 660 ft |
1 hectare = 2.471 acres = 10,000 m². 640 acres make a square mile (a "section" in the US Public Land Survey System).
Questions people ask
How many square feet are in an acre?
43,560 ft², or about 4,047 m².
How do I calculate acreage of a rectangular lot?
Multiply length × width in feet and divide by 43,560. A 330 × 132 ft lot is exactly 1 acre.
How many acres is a 100 × 100 ft lot?
10,000 ÷ 43,560 ≈ 0.23 acres.
What is the difference between an acre and a hectare?
A hectare is metric: 100 m × 100 m = 10,000 m², about 2.47 acres.
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