How to convert square feet to acres
Divide the square feet by 43,560. For example, 10,000 sq ft / 43,560 = 0.2296 acres.
To go the other way, multiply the acres by 43,560. For example, 0.5 acres x 43,560 = 21,780 sq ft.
The calculator gives the same answers: 0.2296 acres for 10,000 sq ft, and 21,780 sq ft for half an acre.
Acres to square feet chart
| Acres | Square feet | Square yards |
|---|---|---|
| 0.1 | 4,356 | 484 |
| 0.25 | 10,890 | 1,210 |
| 0.5 | 21,780 | 2,420 |
| 0.75 | 32,670 | 3,630 |
| 1 | 43,560 | 4,840 |
| 1.5 | 65,340 | 7,260 |
| 2 | 87,120 | 9,680 |
| 2.5 | 108,900 | 12,100 |
| 5 | 217,800 | 24,200 |
| 10 | 435,600 | 48,400 |
Square feet to acres chart
| Square feet | Acres |
|---|---|
| 1,000 | 0.023 |
| 2,000 | 0.0459 |
| 5,000 | 0.1148 |
| 7,500 | 0.1722 |
| 10,000 | 0.2296 |
| 15,000 | 0.3444 |
| 20,000 | 0.4591 |
| 43,560 | 1 |
| 50,000 | 1.1478 |
| 100,000 | 2.2957 |
What one acre looks like
One acre is 4,840 square yards, 4,046.86 square meters or 0.4047 hectares. It has no fixed shape. A square of one acre is about 208.71 ft on each side, and a strip 66 ft by 660 ft is also 43,560 sq ft.
The strip shape comes from history: an acre was the area one furlong (660 ft) long and one chain (66 ft) wide.
The tool uses the international acre. The older US survey acre is larger by about 4 parts per million (about 0.016 square meters), a difference too small to matter for planning. Measurements here are estimates; use your deed or survey for an official lot size.
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Frequently asked questions
How many square feet are in an acre?
One acre is 43,560 square feet. That is the same as 4,840 square yards or about 4,046.86 square meters. An acre has no fixed shape: a strip 66 feet by 660 feet is one acre, and so is a square about 208.71 feet on each side, because both multiply out to 43,560.
Is an acre 200 by 200 feet?
No. A 200 by 200 foot lot is 40,000 square feet, which is about 0.9183 acres, a little short of one acre. To make a full acre as a square, each side needs to be about 208.71 feet, because 208.71 x 208.71 is very close to 43,560 square feet.
How many square feet is half an acre?
Half an acre is 21,780 square feet, which is 43,560 divided by 2. A quarter acre is 10,890 square feet and three quarters of an acre is 32,670 square feet. Type any part of an acre, such as 0.5 or 1/2, into the acres box above to see the exact square footage.
How do you calculate the acreage of a lot?
Multiply the length of the lot by its width in feet to get square feet, then divide by 43,560. A lot 100 feet wide and 200 feet deep is 20,000 square feet, or about 0.4591 acres. For a lot that is not a rectangle, split it into rectangles and triangles first, then add them.
Why is an acre 43,560 square feet?
An acre was traditionally the area of a strip one furlong long and one chain wide. A furlong is 660 feet and a chain is 66 feet, and 660 x 66 = 43,560 square feet. The shape stopped mattering long ago, but the size stayed, so today any area of 43,560 square feet is one acre.
Can this calculator measure acreage from a map?
No. This calculator works from measurements you type in, such as the length and width of a lot from a survey or plat. It does not draw on a map or use satellite images. For an official lot size, rely on the figure in your deed, survey or county property record.