Acres to Square feet Converter (acre to square feet)

Enter a value in acres to see it in square feet instantly, or type in the square feet box to convert the other way. 1 acre = 43,560 square feet, and 1 square foot = 0.0000229568 acres.

An acre is 43,560 square feet, 4,840 square yards (gaj), 100 cents or 40 gunthas. Half an acre is 21,780 sq ft and a quarter acre is 10,890 sq ft.

From

1 acre = 43,560 square feet. Formula: ft² = ac × 43,560 (or ac ÷ 0.0000229568)

1 acre in all area units

Square millimeters (mm²)	4,046,856,400
Square centimeters (cm²)	40,468,564
Square meters (m²)	4,046.8564
Hectares (ha)	0.40468564
Square kilometers (km²)	0.0040468564
Square inches (in²)	6,272,640
Square feet (ft²)	43,560
Square yards (yd²)	4,840
Square gaj (gaj)	4,840
Square miles (mi²)	0.0015625
Cents (cent)	100
Grounds (ground)	18.150008
Gunthas (guntha)	40.000004

How to convert acres to square feet

ft² = ac × 43,560

Multiply the number of acres by 43,560. To convert square feet back to acres, multiply by 0.0000229568, or divide by 43,560.

Example: 5 acres × 43,560 = 217,800 square feet.

Acres to Square feet conversion table

Acres	Square feet
1 ac	43,560 ft²
2 ac	87,120 ft²
3 ac	130,680 ft²
4 ac	174,240 ft²
5 ac	217,800 ft²
6 ac	261,360 ft²
7 ac	304,920 ft²
8 ac	348,480 ft²
9 ac	392,040 ft²
10 ac	435,600 ft²
12 ac	522,720 ft²
15 ac	653,400 ft²
20 ac	871,200 ft²
25 ac	1,089,000 ft²
30 ac	1,306,800 ft²
40 ac	1,742,400 ft²
50 ac	2,178,000 ft²
60 ac	2,613,600 ft²
70 ac	3,049,200 ft²
75 ac	3,267,000 ft²
80 ac	3,484,800 ft²
90 ac	3,920,400 ft²
100 ac	4,356,000 ft²
200 ac	8,712,000 ft²
250 ac	10,890,000 ft²
500 ac	21,780,000 ft²
1,000 ac	43,560,000 ft²

Square feet	Acres
1 ft²	0.0000229568 ac
2 ft²	0.0000459137 ac
3 ft²	0.0000688705 ac
4 ft²	0.0000918274 ac
5 ft²	0.0001147842 ac
6 ft²	0.000137741 ac
7 ft²	0.0001606979 ac
8 ft²	0.0001836547 ac
9 ft²	0.0002066116 ac
10 ft²	0.0002295684 ac
12 ft²	0.0002754821 ac
15 ft²	0.0003443526 ac
20 ft²	0.0004591368 ac
25 ft²	0.000573921 ac
30 ft²	0.0006887052 ac
40 ft²	0.0009182737 ac
50 ft²	0.0011478421 ac
60 ft²	0.0013774105 ac
70 ft²	0.0016069789 ac
75 ft²	0.0017217631 ac
80 ft²	0.0018365473 ac
90 ft²	0.0020661157 ac
100 ft²	0.0022956841 ac
200 ft²	0.0045913682 ac
250 ft²	0.0057392103 ac
500 ft²	0.011478421 ac
1,000 ft²	0.022956841 ac

About the acre and the square foot

The acre is 43,560 square feet, or about 4,047 square meters. Farmland and large plots use acres in the US, the UK and India.

The square foot is the area of a square with 1-foot sides, exactly 0.09290304 square meters. Apartments, offices and flooring are priced per square foot in the US, the UK and India.

Frequently asked questions

How many square feet are in a acre?

There are 43,560 square feet in 1 acre. For any number of acres, multiply by 43,560.

How many acres are in a square foot?

1 square foot = 0.0000229568 acres. To convert square feet to acres, multiply by 0.0000229568 or divide by 43,560.

What is 5 acres in square feet?

5 acres = 217,800 square feet (5 × 43,560).

Is the acre to square feet conversion exact?

Yes. Area factors are the squares of the exact length definitions: a square foot is 0.3048² = 0.09290304 m² exactly, an acre is exactly 4,046.8564224 m², and a square gaj equals a square yard at 0.83612736 m². Indian regional units (cent, ground, guntha) follow their standard definitions in square feet. Results are rounded to eight significant digits for display.

Related calculators

Last updated September 3, 2026. Formulas are shown on the page and checked against the worked example.

Conversion factors are exact international definitions where one exists and standard reference values elsewhere. Results are rounded to 8 significant digits.