Acres to Square Feet Converter
Convert acres to square feet instantly. Type a value, change either unit, or press swap to go the other way. 1 acre = 43,560 square feet.
1 acre = 43,560 square feet
How to convert acres to square feet
square feet = acres × 43,560
To convert acres to square feet, multiply the value by 43,560. To go back from square feet to acres, divide by the same number (or multiply by 0.0000229568).
Worked examples
- 1 ac: 1 × 43,560 = 43,560 ft²
- 2 ac: 2 × 43,560 = 87,120 ft²
- 5 ac: 5 × 43,560 = 217,800 ft²
One acre is 43,560 square feet, so a quarter acre is 10,890 square feet. Remember 43,560 and you can work out most lots in your head.
Acres to Square Feet conversion table
Acres to Square Feet
| ac | ft² |
|---|---|
| 0.25 | 10,890 |
| 0.5 | 21,780 |
| 1 | 43,560 |
| 2 | 87,120 |
| 5 | 217,800 |
| 10 | 435,600 |
| 20 | 871,200 |
| 40 | 1,742,400 |
| 100 | 4,356,000 |
| 640 | 27,878,400 |
Square Feet to Acres
| ft² | ac |
|---|---|
| 0.25 | 5.7392103 × 10-6 |
| 0.5 | 0.0000114784 |
| 1 | 0.0000229568 |
| 2 | 0.0000459137 |
| 5 | 0.0001147842 |
| 10 | 0.0002295684 |
| 20 | 0.0004591368 |
| 40 | 0.0009182736 |
| 100 | 0.0022956841 |
| 640 | 0.014692378 |
Area equivalents
See how one acre and one square foot compare with every other area unit on the site.
1 acre equals
| Unit | Value |
|---|---|
| square inches (in²) | 6,272,640 |
| square centimeters (cm²) | 40,468,564 |
| square feet (ft²) | 43,560 |
| square yards (yd²) | 4,840 |
| square meters (m²) | 4,046.856 |
| hectares (ha) | 0.4046856 |
| square kilometers (km²) | 0.004046856 |
| square miles (mi²) | 0.0015625 |
1 square foot equals
| Unit | Value |
|---|---|
| square inches (in²) | 144 |
| square centimeters (cm²) | 929.0304 |
| square yards (yd²) | 0.1111111 |
| square meters (m²) | 0.09290304 |
| acres (ac) | 0.0000229568 |
| hectares (ha) | 9.290304 × 10-6 |
| square kilometers (km²) | 9.290304 × 10-8 |
| square miles (mi²) | 3.587006 × 10-8 |
When you need to convert acres to square feet
Land for sale, farms and building lots are usually priced by the acre, but house plans and landscaping budgets use square feet. Converting lets you work out how much of a lot a house will cover, how much lawn you need to seed, or how big a quarter-acre plot really is.
About the units
Acre (ac)
An acre is 43,560 square feet, or about 4,047 square meters. It is the usual unit for land in the US and UK.
Square foot (ft²)
A square foot is exactly 0.09290304 square meters. It is the standard unit for home and office floor space in the United States.
Frequently asked questions
How do I convert acres to square feet?
Multiply the number of acres by 43,560. For example, 10 acres × 43,560 = 435,600 square feet.
How many square feet are in one acre?
There are 43,560 square feet in one acre.
How many acres are in one square foot?
There are 0.0000229568 acres in one square foot.
How big is an acre compared to a football field?
An acre (43,560 square feet) is about 76 percent of a full American football field including both end zones (57,600 square feet), or about 91 percent of the playing field between the goal lines (48,000 square feet). As a square, an acre would be roughly 209 feet on each side.
Can I convert other area units with this tool?
Yes. Use the From and To drop-downs in the converter to choose any area unit, or press the swap button to reverse the conversion. All calculations use internationally defined conversion factors.