Unit Converters

Acres to Square Feet Converter

Convert area between acres and square feet using the exact rule of 43,560 square feet per acre. It works both directions, with presets for typical lots and farm sizes.

Try
Converted area
43,560 sq ft

1 acre in square feet

Conversion factor
×43,560
1 acre equals
43,560 sq ft
Conversion factors are exact; rounding may affect the final digit.
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How it's calculated

sq ft = acres × 43,560

acres = area in acres, 43,560 = square feet in one acre, sq ft = result. Reverse: acres = sq ft ÷ 43,560.

Common values

AcresSquare feet
0.25 acre10,890 sq ft
0.5 acre21,780 sq ft
1 acre43,560 sq ft
5 acres217,800 sq ft

Common questions

How many square feet are in an acre?

Exactly 43,560 square feet.

How do I convert square feet to acres?

Divide the square footage by 43,560. So a 21,780 sq ft lot is half an acre.