Acres to Square Feet Converter
Convert acres to square feet, or square feet to acres, instantly.
Area Conversion Formula
Square feet = acres × 43,560. Acres = square feet ÷ 43,560.
Worked example
Convert 2 acres to square feet.
2 × 43,560 = 87,120
2 acres = 87,120 sq ft
Worked example (square feet to acres)
Convert 10,000 square feet to acres.
10,000 ÷ 43,560 ≈ 0.2296
10,000 sq ft ≈ 0.2296 acres
Quick reference: acres to square feet
| Acres | Square feet |
|---|---|
| 1/4 acre | 10,890 |
| 1/2 acre | 21,780 |
| 1 acre | 43,560 |
| 2 acres | 87,120 |
| 5 acres | 217,800 |
Keep going
- Once you know an area in square feet from the acreage conversion, square footage math takes over for room-by-room planning; the square footage calculator handles that next step. Square Footage Calculator
Frequently Asked Questions
How many square feet are in an acre?
1 acre = 43,560 square feet.
How many acres are in a square foot?
1 square foot = 1/43,560 (about 0.000023) of an acre.
Where does the 43,560 figure come from?
An acre was historically defined as 1 chain by 1 furlong — 66 feet by 660 feet — which multiplies out to exactly 43,560 square feet.
How does an acre compare to a football field?
An American football field's playing surface (not counting end zones) is 300 × 160 feet = 48,000 square feet. Divide that by 43,560 and the field is about 1.10 acres — so an acre is a little smaller than a football field.
How many square feet is a quarter-acre lot?
43,560 ÷ 4 = 10,890 square feet, a common suburban lot size — roughly the area of a 104-by-104-foot square (√10,890 ≈ 104).
How many acres is a square mile?
Exactly 640 acres. A square mile is 5,280 × 5,280 = 27,878,400 square feet, and 27,878,400 ÷ 43,560 = 640. This 640-acre 'section' is the basic land unit of the US Public Land Survey System.
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