Square Feet to Acres
Convert square feet to acres, acres to square feet, or the length and width of a lot to acres. One acre is exactly 43,560 square feet.
10,000 square feet is
0.2296 acres
That is 22.96% of an acre. One acre is 43,560 square feet.
| 10,000 sq ft ÷ 43,560 | 0.2296 acres |
|---|---|
| Square yards (sq ft ÷ 9) | 1,111.11 |
| Square meters (sq ft × 0.09290304) | 929.03 |
| Hectares (square meters ÷ 10,000) | 0.0929 |
Common lot sizes
| Acres | Square feet | Square meters | As a square, each side |
|---|---|---|---|
| 1/10 acre | 4,356 | 405 | 66 ft |
| 1/8 acre | 5,445 | 506 | 73.8 ft |
| 1/5 acre | 8,712 | 809 | 93.3 ft |
| 1/4 acre | 10,890 | 1,012 | 104.4 ft |
| 1/3 acre | 14,520 | 1,349 | 120.5 ft |
| 1/2 acre | 21,780 | 2,023 | 147.6 ft |
| 3/4 acre | 32,670 | 3,035 | 180.7 ft |
| 1 acre | 43,560 | 4,047 | 208.7 ft |
| 2 acres | 87,120 | 8,094 | 295.2 ft |
| 5 acres | 217,800 | 20,234 | 466.7 ft |
| 10 acres | 435,600 | 40,469 | 660 ft |
| Square feet | Acres |
|---|---|
| 2,500 | 0.0574 |
| 5,000 | 0.1148 |
| 6,000 | 0.1377 |
| 7,500 | 0.1722 |
| 8,000 | 0.1837 |
| 10,000 | 0.2296 |
| 12,000 | 0.2755 |
| 15,000 | 0.3444 |
| 20,000 | 0.4591 |
| 25,000 | 0.5739 |
| 50,000 | 1.1478 |
| 100,000 | 2.2957 |
How this is calculated
An acre is exactly 43,560 square feet (NIST Handbook 44, Appendix C). To turn square feet into acres, divide by 43,560; to turn acres into square feet, multiply by 43,560. A 10,000 square foot lot is 10,000 ÷ 43,560 = 0.2296 acres, a little under a quarter acre (10,890 square feet).
For a rectangular lot, multiply the two sides first. A lot 100 feet by 200 feet is 20,000 square feet, and 20,000 ÷ 43,560 = 0.4591 acres. For a lot of another shape, work out its area with the square footage calculator and convert the result here.
How big an acre is
An acre has no set shape. As a square, each side would be about 208.71 feet, the square root of 43,560. It is also 4,840 square yards, and 640 acres make a square mile. In metric units an acre is exactly 4,046.8564224 square meters, or about 0.4047 hectares.
The acre since 2023
Until the end of 2022, land in the United States could be measured with the U.S. survey foot, which is a hair longer than the ordinary foot. NIST retired it after December 31, 2022, except for historic and legacy uses. The acre is still 43,560 square feet, now in the ordinary (international) foot. The old survey acre was 4,046.8726 square meters, about 0.17 square feet larger, which makes no practical difference for a lot.
Sources
Checked against the sources below on .
Questions people ask
How many square feet are in an acre?
43,560 square feet. NIST Handbook 44 defines the acre as exactly 43,560 square feet, which is also 4,840 square yards.
How many acres is 10,000 square feet?
0.2296 acres: 10,000 ÷ 43,560. That is a little under a quarter acre, which is 10,890 square feet.
How many square feet is a quarter acre or a half acre?
A quarter acre is 10,890 square feet and a half acre is 21,780 square feet. A third of an acre is 14,520 square feet.
How big is an acre?
As a square, about 208.71 feet on each side. Any shape with 43,560 square feet is an acre, for example 100 × 435.6 feet.
How many acres is a 100 by 200 lot?
100 × 200 feet is 20,000 square feet, which is 0.4591 acres, a little under half an acre.
Did the acre change in 2023?
Barely. NIST retired the U.S. survey foot after December 31, 2022, so the acre is now 4,046.8564224 square meters. The old survey acre was about 0.17 square feet larger.