Convert acres to square feet
Converting acres to square feet is a common area task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 ac equals 43,560 ft², the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert acres to square feet
To convert acres to square feet, multiply the number of acres by 43,560. For example, 10 ac × 43,560 = 435,600 ft².
ft² = ac × 43,560
- Write down the value in acres you want to convert.
- Multiply it by 43,560 (the exact ac→ft² factor).
- The result is your value in square feet. Check it below with the converter or the table.
Conversion table
Common values of acres and their equivalents in square feet:
| ac | ft² |
|---|---|
| 1 | 43,560 |
| 2 | 87,120 |
| 3 | 130,680 |
| 4 | 174,240 |
| 5 | 217,800 |
| 10 | 435,600 |
| 20 | 871,200 |
| 25 | 1,089,000 |
| 50 | 2,178,000 |
| 100 | 4,356,000 |
| 250 | 10,890,000 |
| 500 | 21,780,000 |
About these units
Acre (ac). An acre equals exactly 4,046.8564224 square meters, or 43,560 square feet. It is the traditional land unit in the US and UK, about 0.4 hectares.
Square Foot (ft²). A square foot is a square with one-foot (30.48 cm) sides, exactly 0.09290304 square meters. It is the standard unit for homes and offices in the United States.
Frequently asked questions
How do I convert acres to square feet?
To convert acres to square feet, multiply the number of acres by 43,560. For example, 10 ac × 43,560 = 435,600 ft². Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many square feet are in 1 acre?
1 ac = 43,560 ft². That is the fixed relationship used by this converter and by international standards.
How many acres are in 1 square foot?
1 ft² = 0.0000229568 ac. If you are converting in the opposite direction, use our Square Foot to Acre converter for the dedicated table and FAQ.
Is the acres to square feet conversion exact?
Yes. Both units are defined by international agreement, so the factor of 43,560 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is acre used for?
An acre equals exactly 4,046.8564224 square meters, or 43,560 square feet. It is the traditional land unit in the US and UK, about 0.4 hectares.