Acreage Calculator
This acreage calculator converts an area in square feet into acres. Since one acre is exactly 43,560 square feet, it divides your square footage by 43,560. Enter the area of a plot or piece of land in square feet to see how many acres it covers — useful for real estate, farming and property listings.
Formula
Acres = Sq Ft ÷ 43,560
- One acre is defined as exactly 43,560 square feet.
- Acres = square feet ÷ 43,560.
- To reverse it, multiply acres by 43,560 to get square feet.
- For irregular land, add up the area of each section in square feet first, then convert the total.
- An acre also equals 4,840 square yards or about 4,046.86 square metres.
Example Calculation
Inputs
- Area (sq ft): 43560
A plot of 43,560 square feet equals 43,560 ÷ 43,560 = 1 acre. A 21,780 sq ft lot would be half an acre.
Frequently asked questions
How many square feet are in an acre?
Exactly 43,560 square feet. To find acres, divide your area in square feet by 43,560.
How do I convert square feet to acres?
Divide the area in square feet by 43,560. For example, 87,120 sq ft ÷ 43,560 = 2 acres.
How do I work out the acreage of a rectangular plot?
Multiply its length by its width in feet to get square feet, then divide by 43,560.
What is an acre in other units?
One acre is 4,840 square yards, roughly 4,046.86 square metres, or about 0.405 hectares.
Can I use this for irregular land?
Yes. Break the land into simple shapes, total their areas in square feet, then convert the sum to acres.