Square Feet to Acres Converter

Convert square feet to acres by dividing by 43,560. Enter an area in square feet to get acres, square yards and square meters. Example: 10,000 sq ft = 0.2296 acres.

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Square feet (sq ft)

Decimal places

How to use the Square Feet to Acres Converter

Type the value in square feet.
Choose how many decimal places you want.
Press Calculate to see the value in acres, with the formula and steps.

Formula and method

acres = square feet ÷ 43,560

One acre is exactly 43,560 square feet, which is a strip 1 furlong (660 ft) long and 1 chain (66 ft) wide. A square acre is about 208.7 ft on each side.

sq ft to acres conversion chart

Square feet	Acres
1,000 sq ft	0.023 acres
5,000 sq ft	0.1148 acres
10,000 sq ft	0.2296 acres
10,890 sq ft	0.25 acres
21,780 sq ft	0.5 acres
43,560 sq ft	1 acres
65,340 sq ft	1.5 acres
87,120 sq ft	2 acres
130,680 sq ft	3 acres
217,800 sq ft	5 acres
435,600 sq ft	10 acres

Lot sizes at a glance

Lot	Square feet	Acres
Small city lot	5,000	0.115
Quarter acre	10,890	0.25
Half acre	21,780	0.5
One acre	43,560	1
Five acres	217,800	5
Ten acres	435,600	10

Using acres for land and projects

Zoning, farmland and seed or fertilizer rates are stated per acre. A 2,500 sq ft house on a 10,000 sq ft lot covers 25% of the lot. To compute areas from dimensions first, use the square footage calculator, and for materials use the concrete calculator.

What are square feet and acres?

A square foot is the area of a square that is one foot on each side, about 0.0929 square meters.

An acre is 43,560 square feet (4,046.86 square meters). The name comes from the traditional area a team of oxen could plow in a day.

How to convert square feet to acres step by step

Write the value you want to convert: 21,780 sq ft.
Apply the rule square feet to acres: ÷ 43,560.
Calculate: 21,780 ÷ 43,560 = 0.5 acres.
Check a second value, 150,000 sq ft: 150,000 ÷ 43,560 = 3.4435 acres.

Round the answer to the precision you need. For quick checks use the mental estimate in the formula section above, and use the converter for exact results.

Full sq ft to acres chart

sq ft	acres	sq ft	acres	sq ft	acres
5,000 sq ft	0.1148 acres	55,000 sq ft	1.2626 acres	105,000 sq ft	2.4105 acres
10,000 sq ft	0.2296 acres	60,000 sq ft	1.3774 acres	110,000 sq ft	2.5253 acres
15,000 sq ft	0.3444 acres	65,000 sq ft	1.4922 acres	115,000 sq ft	2.64 acres
20,000 sq ft	0.4591 acres	70,000 sq ft	1.607 acres	120,000 sq ft	2.7548 acres
25,000 sq ft	0.5739 acres	75,000 sq ft	1.7218 acres	125,000 sq ft	2.8696 acres
30,000 sq ft	0.6887 acres	80,000 sq ft	1.8365 acres	130,000 sq ft	2.9844 acres
35,000 sq ft	0.8035 acres	85,000 sq ft	1.9513 acres	135,000 sq ft	3.0992 acres
40,000 sq ft	0.9183 acres	90,000 sq ft	2.0661 acres	140,000 sq ft	3.214 acres
45,000 sq ft	1.0331 acres	95,000 sq ft	2.1809 acres	145,000 sq ft	3.3287 acres
50,000 sq ft	1.1478 acres	100,000 sq ft	2.2957 acres	150,000 sq ft	3.4435 acres

Frequently asked questions

How many square feet are in an acre?

43,560 square feet.

How many acres is 10,000 square feet?

10,000 / 43,560 = 0.2296 acres.

How big is an acre compared with a football field?

An American football field including end zones is 57,600 sq ft, so an acre is about 76% of a field.

Sources

NIST: Unit conversion factors

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