Acres to Square Feet Converter
Convert acres to square feet instantly — 1 acre = 43,560 sq ft
1 acres =
43,560 sq ft
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Quick summary
To convert acres to square feet, multiply by 43,560 — an acre is exactly 43,560 square feet. So ¼ acre = 10,890 sq ft and 2 acres = 87,120 sq ft. To convert square feet to acres, divide by 43,560. Use swap to reverse. Great for land, lots, and real estate.
Reviewed by Simple Calculators TeamLast reviewed
How to use this calculator
- Enter the inputs requested by the calculator.
- Choose the units or options that match your situation and review the assumptions.
- Run or update the calculation to see the result.
- Review the result, breakdown, and formulas shown on the page.
- Check the inputs, units, dates, and limitations before saving or sharing the result.
Frequently asked questions
How do I convert acres to square feet?
Multiply the acres by 43,560, since one acre equals 43,560 square feet. For example, 2 acres × 43,560 = 87,120 sq ft. To convert square feet to acres, divide by 43,560.
How many square feet in an acre?
There are exactly 43,560 square feet in one acre. So a quarter-acre lot is 10,890 sq ft and a half-acre is 21,780 sq ft.
What is 1/4 acre in square feet?
A quarter acre is 10,890 square feet (43,560 ÷ 4) — a common residential lot size. The reference table lists other common parcel sizes.
Where did 43,560 come from?
An acre was historically the area a yoke of oxen could plow in a day — one chain (66 ft) by one furlong (660 ft), which is 43,560 square feet. The odd number is a holdover from those old units.
Key terms
- Acre
- A land-area unit equal to exactly 43,560 square feet (~4,047 sq m).
- Square Foot (sq ft)
- An imperial area unit; 43,560 make an acre.
- Lot Size
- Residential land is often measured in fractions of an acre.
Methodology, sources & limitations
This page shows the formula, assumptions, and limitations used for this estimate. Rates, thresholds, and other time-sensitive inputs can change, so verify them against the relevant official source before relying on a result.
For our review approach and the primary sources we consult, see the methodology and source policy. If you spot an outdated figure or formula, please contact us with a correction.