🗺️ Area converter

Square Foot to Acre Converter

Convert square feet (ft²) to acres (ac) instantly with the exact formula, a conversion table and chart.

ft²

Results

Acres
0.0000229568411387 ac
Same value in every unit

📊 Square Foot to Acre chart

Square Foot to Acre — plotted against square foot (ft²).

How to convert square feet to acres

To convert square feet to acres, multiply by 0.0000229568411387. Area conversions are essential for real estate, flooring, land surveys, farming and map reading.

ac = ft² × 0.0000229568411387 ft² = ac ÷ 0.0000229568411387
Square Foot to Acre conversion – ft² to ac formula illustration
Square Foot (ft²) → Acre (ac) at a glance.

Square Foot to Acre conversion table

Square Foot (ft²)Acre (ac)
0.1 ft²0.00000229568411387 ac
0.5 ft²0.0000114784205693 ac
1 ft²0.0000229568411387 ac
2 ft²0.0000459136822773 ac
3 ft²0.000068870523416 ac
4 ft²0.0000918273645546 ac
5 ft²0.000114784205693 ac
10 ft²0.000229568411387 ac
20 ft²0.000459136822773 ac
25 ft²0.000573921028466 ac
50 ft²0.00114784205693 ac
100 ft²0.00229568411387 ac
500 ft²0.0114784205693 ac
1,000 ft²0.0229568411387 ac

About the units

Square Foot (ft²)

A square foot equals exactly 0.09290304 m² and is the standard unit for US home sizes.

Acre (ac)

An acre equals 43,560 square feet (4,046.8564224 m²) and is used for land in the US and UK.

How to use this converter

  1. Type the number of square feet (ft²) in the input box.
  2. The result in acres appears instantly — no button needed.
  3. See the same value in every other area unit just below.
  4. Use “Swap units” to convert acres back to square feet.

Tips for better results

  • Double-check which system a unit belongs to (for example US vs UK gallons).
  • Use the swap button to convert in the opposite direction instantly.
  • Bookmark the conversions you use most — each pair has its own page.

Frequently asked questions

How many acres are in one square foot?

One square foot equals 0.0000229568411387 acres. 0.0000229568411387 is the exact factor used by this converter.

How do I convert square feet to acres?

Multiply the value in square feet by 0.0000229568411387. To go the other way, multiply acres by 43,560.

What is 10 ft² in ac?

10 ft² = 0.000229568411387 ac. Also, 5 ft² = 0.000114784205693 ac and 100 ft² = 0.00229568411387 ac.

What is the difference between a square foot and a acre?

A square foot equals exactly 0.09290304 m² and is the standard unit for US home sizes. An acre equals 43,560 square feet (4,046.8564224 m²) and is used for land in the US and UK.

Is this tool free and private?

Yes — the Square Foot to Acre is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.

Related tools

Area ConverterConvert any area unit to all others at once — cm², m², km², ft², ac, ha, mi².Acre to Square FootConvert acres (ac) to square feet (ft²) instantly with the exact formula, a conversion…Square Foot to Square CentimeterConvert square feet (ft²) to square centimeters (cm²) instantly with the exact…Square Foot to Square MeterConvert square feet (ft²) to square meters (m²) instantly with the exact formula, a…Square Foot to Square KilometerConvert square feet (ft²) to square kilometers (km²) instantly with the exact formula,…Square Foot to HectareConvert square feet (ft²) to hectares (ha) instantly with the exact formula, a…Square Foot to Square MileConvert square feet (ft²) to square miles (mi²) instantly with the exact formula, a…

📬 Get new tools first — free

Join Taurang to hear about new calculators, converters and features. No spam; unsubscribe anytime.

Create free account