Acres to Square Feet
Convert acres to square feet instantly. 1 ac = 43,560 ft². Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert acres to square feet
To convert acres to square feet, multiply by 43,560. The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
ft² = ac × 43,560
Acres to Square Feet conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Acres | Square Feet |
|---|---|
| 1 ac | 43,560 ft² |
| 2 ac | 87,120 ft² |
| 3 ac | 130,680 ft² |
| 5 ac | 217,800 ft² |
| 10 ac | 435,600 ft² |
| 20 ac | 871,200 ft² |
| 25 ac | 1,089,000 ft² |
| 50 ac | 2,178,000 ft² |
| 100 ac | 4,356,000 ft² |
| 500 ac | 21,780,000 ft² |
| 1,000 ac | 43,560,000 ft² |
What is a acre?
43,560 square feet — historically the area one ox team could plough in a day.
What is a square feet?
The US and UK standard for property floor area.
The formula
ft² = ac × 43,560
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Acres to Square Feet
- Type the number of acres you want to convert.
- Read the result in square feet straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked square feet to acres page.
Acres to Square Feet — frequently asked questions
How many square feet are in a acre?
One acre equals 43,560 ft². ft² = ac × 43,560
What is the formula to convert acres to square feet?
The formula is ft² = ac × 43,560. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert square feet back to acres?
Divide instead of multiplying: one square feet is 2.29568e-05 ac. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this acres to square feet free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the acres to square feet.
- acres to square feet
- acre to sqft
- acre to square ft
- acre to sq ft
- acre to square feet
- acres to sqft
- acres to square ft
- acres to sq ft
About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 15, 2026 · Calculation runs client-side · No data collected · Report an error