Example 1
- Direction: square feet to acres
- 43560 sq ft
1 acre
How many acres is 43,560 sq ft? 1 acre.
Square Feet to Acres
The calculator converts square feet to acres. 43,560 sq ft is 1 acre. 87,120 sq ft is 2 acres. Hectares are on a separate page.
Hectares are on hectares and acres. Square metres and square feet are on m² and ft².
Result
Enter an area in square feet or in acres. The result will appear here.
How it works
The calculator divides square feet by 43,560. 43,560 sq ft is 1 acre. 87,120 sq ft is 2 acres.
The other way, you multiply acres by 43,560. 2 acres are 87,120 sq ft.
This is the international acre, 43,560 square feet. A hectare is on the hectares and acres page.
Square metres without acres belong on the m² and ft² page.
You may enter zero; the result is then also zero. The calculator does not accept negative numbers.
A comma and a period give the same fraction.
Formula
acres = sq ft / 43,560; sq ft = acres × 43,560
1 acre is 43,560 square feet. That is the definition, not a rounding.
How to use
- Choose square feet to acres.
- Enter 43560. The result is 1 acre.
- Enter 87120. The result is 2 acres.
- The other way, enter 2. The result is 87,120 sq ft.
43,560 sq ft is 1 acre
An acre has 43,560 square feet. 87,120 sq ft is 2 acres.
- acre
- 43,560 sq ft. Not a hectare.
- sq ft
- Square foot. 43,560 of them make 1 acre.
- 43560
- The acre constant. A definition, not an estimate.
Examples
Example 2
- Direction: square feet to acres
- 87120 sq ft
2 acres
How many acres is 87,120 sq ft? 2 acres.
Example 3
- Direction: acres to square feet
- 2 acres
87,120 sq ft
How many sq ft are 2 acres? 87,120.
Related calculators
Frequently asked questions
How many acres is 43,560 sq ft?
1 acre. That is the acre definition.
How many acres is 87,120 sq ft?
2 acres. 87,120 divided by 43,560.
How many sq ft are 2 acres?
87,120. Two times 43,560.
Is this a hectare?
No. A hectare is on the hectares and acres page.
Can area be negative?
No. You may enter zero; the result is then zero acres.
Where do I convert square metres?
On the m² and ft² page. That page does not use this 43,560 constant for acres.
Is 0.5 acre 21,780 sq ft?
Yes. Half of 43,560.
Does a comma work?
Yes. 1.5 acres are 65,340 sq ft.
Is this an Irish or Scottish acre?
No. This page uses the international acre of 43,560 sq ft.
Is this a length in feet?
No. This is area. Length in feet is on the metres-to-feet page.
Sources
An acre has 43,560 square feet.
Page updated in 2026.