To convert square feet to acres, use ac = ft2 ÷ 43560. This Square Feet to Acres page gives a calculator, formula, table, and worked example for ft2 to ac. It also explains the square foot to acre relationship so you can convert square feet to acres quickly and check the result.
Use this page to convert square feet to acres, compare ft2 to ac, and check the square foot to acre conversion with a formula, examples, and a reference table.
Result: 1 Square Foot = 0.0000229568 Acre
The calculator converts 1 Square Foot to Acre and formats the result as 0.0000229568 Acre.
Formula
1 ft2 = 0.0000229568 ac
Example: convert 100 square feet to acres
Formula: ac = ft2 ÷ 43560
Calculation: 100 ÷ 43560 = 0.0022956841 -> 100 square feet = 0.0022956841 acres
Result: 100 square feet = 0.0022956841 acres
| Square Feet (ft2) | Acres (ac) |
|---|---|
| 0.01 ft2 | 0.0000002296 ac |
| 0.1 ft2 | 0.0000022957 ac |
| 1 ft2 | 0.0000229568 ac |
| 2 ft2 | 0.0000459137 ac |
| 5 ft2 | 0.0001147842 ac |
| 10 ft2 | 0.0002295684 ac |
| 12 ft2 | 0.0002754821 ac |
| 100 ft2 | 0.0022956841 ac |
| 1000 ft2 | 0.0229568411 ac |
| 5000 ft2 | 0.1147842057 ac |
The symbol for square foot is ft2.
A square foot is an area unit equal to the area of a square one foot on each side.
It is used for rooms, floor plans, buildings, real estate listings, construction, flooring, and material coverage.
1 square foot equals exactly 0.09290304 square meters, and 43,560 square feet make 1 acre.
The symbol for acre is ac.
An acre is an imperial and US customary area unit used for land measurement.
It is commonly used for land parcels, farms, real estate listings, parks, lots, and property records.
1 acre equals 43,560 square feet or about 4,046.8564224 square meters.
To convert square feet to acres, use ac = ft2 ÷ 43560. This is the main ft2 to ac formula used by the calculator and table.
1 ft2 equals 0.0000229568 ac.
1 ac equals 43,560 ft2.
ft2 to ac is the abbreviated form of square foot to acre. It uses ft2 for square foot and ac for acre.