Acre to Square Foot Converter
Convert Acre (ac) to Square Foot (ft²) instantly. 1 ac = 43,560 ft².
Area Converter
20 units available
1 ac = 43,560 ft²
Formula:
ft² = ac × 43,560With your value: 1 ac = 43,560 ft²
How big is that?
Everyday references on a logarithmic scale, all expressed in acre so you can sanity-check the result.
Other Acre to Square Foot conversions
Acre to Square Foot Conversion Table
| Acre (ac) | Square Foot (ft²) |
|---|---|
| 0.5 | 21,780 |
| 1 | 43,560 |
| 2 | 87,120 |
| 5 | 217,800 |
| 10 | 435,600 |
| 15 | 653,400 |
| 20 | 871,200 |
| 25 | 1,089,000 |
| 50 | 2,178,000 |
| 100 | 4,356,000 |
| 250 | 10,890,000 |
| 500 | 21,780,000 |
| 1000 | 43,560,000 |
Square Foot to Acre Conversion Table
| Square Foot (ft²) | Acre (ac) |
|---|---|
| 0.5 | 1.147842e-5 |
| 1 | 2.295684e-5 |
| 2 | 4.591368e-5 |
| 5 | 0.000115 |
| 10 | 0.00023 |
| 15 | 0.000344 |
| 20 | 0.000459 |
| 25 | 0.000574 |
| 50 | 0.001148 |
| 100 | 0.002296 |
| 250 | 0.005739 |
| 500 | 0.011478 |
| 1000 | 0.022957 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Acre (ac)
Area
Derived from the square metre via the length definitions above.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Square Foot (ft²)
Area
Derived from the square metre via the length definitions above.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Acre to Square Foot
To convert from Acre (ac) to Square Foot (ft²), multiply the value by 43,560.
Formula: ft² = ac × 43,560
Reverse: ac = ft² × 0.0000229568
Step-by-Step Example
- Start with your value in Acre. For example: 5 ac
- Multiply by the conversion factor: 5 x 43,560
- The result is: 217,800 ft²
About Acre
The acre is a unit of land area equal to 43,560 square feet or about 4,047 square meters. It is used primarily in the US, UK, and former British colonies.
Fun Fact: An acre was originally defined as the amount of land a yoke of oxen could plow in one day.
Common uses: land measurement, agriculture, real estate.
About Square Foot
The square foot is an imperial unit of area equal to a square with sides of 1 foot. It is the standard unit for real estate in the US.
Common uses: real estate (US), flooring, construction.
Frequently Asked Questions
How many Square Foot are in 1 Acre?
There are exactly 43,560 Square Foot in 1 Acre. This means the conversion factor from Acre to Square Foot is 43,560.
What is the formula to convert Acre to Square Foot?
The formula to convert Acre to Square Foot is: ft² = ac × 43,560. For example, to convert 10 Acre to Square Foot, you would multiply 10 by 43,560.
What is a Acre?
The acre is a unit of land area equal to 43,560 square feet or about 4,047 square meters. It is used primarily in the US, UK, and former British colonies.
What is a Square Foot?
The square foot is an imperial unit of area equal to a square with sides of 1 foot. It is the standard unit for real estate in the US.
What are the common uses of Acre?
The Acre is commonly used in land measurement, agriculture, real estate.
Related Area Conversions
Cite this page
UnitConvertLab. (2026). Acre to Square Foot converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/acre-to-sqfoot