Area Converter

Convert Square Foot to Acre.

Input the value of square feet below to convert instantly to acres with standard conversions, definitions, and equations.

Area Converter

ft²

Value in Acres = Value in Square Feet × 2.2957e-5 Multiply the value in square feet by the conversion factor 2.2957e-5.

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How to Convert Square Feet to Acres

To convert square foot to acre, we use the official conversion formulas. Below is the mathematical formula, plain-English explanation, and a worked example.

square-foot-to-acre-formula.py

# Mathematical Formula

Value in Acres = Value in Square Feet × 2.2957e-5

# Worked Example (5 ft²)

5 ft² × 2.2957e-5 = 0.0001 ac

What is a Square Foot?

Square Foot (ft²)

Common real estate area unit in the US, equal to a square with 1-foot sides.

What is a Acre?

Acre (ac)

A unit of land area equal to 43,560 square feet or approximately 4,047 square meters.

Square Foot to Acre Conversion Table

Square Foot (ft²)	Acre (ac)
1 ft²	0.00002 ac
2 ft²	0.00005 ac
3 ft²	0.00007 ac
5 ft²	0.00011 ac
10 ft²	0.00023 ac
15 ft²	0.00034 ac
20 ft²	0.00046 ac
25 ft²	0.00057 ac
50 ft²	0.00115 ac
100 ft²	0.0023 ac
250 ft²	0.00574 ac
500 ft²	0.01148 ac
1000 ft²	0.02296 ac

Acre to Square Foot Conversion Table

Acre (ac)	Square Foot (ft²)
1 ac	43560 ft²
2 ac	87120 ft²
3 ac	130680 ft²
5 ac	217800 ft²
10 ac	435600 ft²
15 ac	653400 ft²
20 ac	871200 ft²
25 ac	1089000 ft²
50 ac	2178000 ft²
100 ac	4356000 ft²
250 ac	1.0890e+7 ft²
500 ac	2.1780e+7 ft²
1000 ac	4.3560e+7 ft²

Questions

Frequently Asked Questions

How do I convert square feet to acres?

Multiply the value in square feet by the conversion factor 2.295684e-5. For example, to convert 5 square feet to acres: 5 × 2.295684e-5 = 0.0001 ac.

What is the conversion factor from square foot to acre?

The conversion factor is 2.295684e-5. One square foot is equal to 2.295684e-5 acres.

What is the reverse conversion from acre to square foot?

To convert acres back to square feet, multiply by 4.356000e+4 (or divide the value by 2.295684e-5). One acre is equal to 4.356000e+4 square feet.

How many square feet are in an acre?

There are exactly 43,560 square feet in one acre.

What is the difference between an acre and a hectare?

A hectare is a metric unit of area equal to 10,000 square meters, while an acre is an imperial unit equal to approximately 4,047 square meters. Thus, 1 hectare is about 2.47 acres.

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