Acre to Square Feet Converter
Convert acres to square feet in your browser, with a full reference table and the formula behind it. Free, instant, no sign-up.
How to convert acres to square feet
square feet = acres × 43,560
One acre is 43,560 square feet, so any conversion is a single multiplication. To go the other way, divide by 43,560 instead. The converter above is already set to acres and square feet, so you can type any value and read the answer straight away.
Acre to Square Feet conversion table
Common values, worked out in advance:
| Acres (acre) | Square feet (sq ft) |
|---|---|
| 1 acre | 43,560 sq ft |
| 2 acre | 87,120 sq ft |
| 3 acre | 130,680 sq ft |
| 5 acre | 217,800 sq ft |
| 10 acre | 435,600 sq ft |
| 20 acre | 871,200 sq ft |
| 50 acre | 2,178,000 sq ft |
| 100 acre | 4,356,000 sq ft |
| 500 acre | 21,780,000 sq ft |
| 1,000 acre | 43,560,000 sq ft |
The quick mental version
For a rough answer without a calculator, remember that 1 sq ft is about 0.000023 acre. That is usually close enough for shopping, travel and DIY, and the converter above gives you the exact figure when it matters.
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Frequently asked questions
How many square feet are in 1 acre?
One acre is 43,560 sq ft. The table above covers the values people look up most often.
What is the formula to convert acres to square feet?
square feet = acres × 43,560. One acre is 43,560 square feet, so any conversion is a single multiplication. To go the other way, divide by 43,560 instead.
Is this acre to square feet converter accurate?
Yes. It uses the exact internationally defined conversion factors and calculates in your browser, so nothing is rounded until the result is displayed.
Can I convert square feet back to acres here?
Yes. Use the swap button in the converter to reverse the direction, or pick any other pair of units from the two dropdowns.