Acres to Square Feet Converter
One acre = 43,560 square feet. To convert acres to square feet, multiply the acreage by 43,560: 2 acres is 87,120 sq ft, and half an acre is 21,780 sq ft. Type any value below, or scan the table for common parcel sizes.
43,560ft²
How many square feet in an acre?
There are 43,560 square feet in an acre. That one number handles the conversion in both directions: multiply acres by 43,560 to get square feet, and divide square feet by 43,560 to get acres back. A few worked examples:
- 0.25 acres × 43,560 = 10,890 sq ft — the classic quarter-acre suburban lot
- 1.5 acres × 43,560 = 65,340 sq ft
- 5 acres × 43,560 = 217,800 sq ft — small-hobby-farm territory
Why is an acre 43,560 square feet?
The odd number is medieval farming math. An acre was the area a team of oxen could plow in one day: a strip one chain wide (66 feet) by one furlong long (660 feet — literally a “furrow-long”). Multiply 66 by 660 and you get 43,560 square feet, and when surveying was standardized the number stuck. It also explains why an acre has no fixed shape: any boundary enclosing 43,560square feet is an acre, whether it’s a long grain strip or a square about 208.7 feet per side.
Acres to square feet conversion table
| Acres | Square feet | Square meters |
|---|---|---|
| 0.1 | 4,356 sq ft | 405 m² |
| 0.2 | 8,712 sq ft | 809 m² |
| 0.25 | 10,890 sq ft | 1,012 m² |
| 0.27 | 11,761 sq ft | 1,093 m² |
| 0.3 | 13,068 sq ft | 1,214 m² |
| 0.34 | 14,810 sq ft | 1,376 m² |
| 0.4 | 17,424 sq ft | 1,619 m² |
| 0.5 | 21,780 sq ft | 2,023 m² |
| 0.6 | 26,136 sq ft | 2,428 m² |
| 0.75 | 32,670 sq ft | 3,035 m² |
| 1 | 43,560 sq ft | 4,047 m² |
| 1.25 | 54,450 sq ft | 5,059 m² |
| 1.5 | 65,340 sq ft | 6,070 m² |
| 2 | 87,120 sq ft | 8,094 m² |
| 2.5 | 108,900 sq ft | 10,117 m² |
| 3 | 130,680 sq ft | 12,141 m² |
| 4 | 174,240 sq ft | 16,187 m² |
| 5 | 217,800 sq ft | 20,234 m² |
| 7.5 | 326,700 sq ft | 30,351 m² |
| 10 | 435,600 sq ft | 40,469 m² |
| 15 | 653,400 sq ft | 60,703 m² |
| 20 | 871,200 sq ft | 80,937 m² |
| 25 | 1,089,000 sq ft | 101,171 m² |
| 40 | 1,742,400 sq ft | 161,874 m² |
| 50 | 2,178,000 sq ft | 202,343 m² |
| 75 | 3,267,000 sq ft | 303,514 m² |
| 100 | 4,356,000 sq ft | 404,686 m² |
Reading a listing that shows square feet instead? The square feet to acres converter runs the same math in the other direction.
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Frequently asked questions
- How many square feet are in an acre?
- There are 43,560 square feet in one acre. The number comes from the acre's historical definition: a strip one chain (66 feet) wide by one furlong (660 feet) long, and 66 × 660 = 43,560. To convert any acreage to square feet, multiply the number of acres by 43,560.
- How many square feet in half an acre?
- Half an acre is 21,780 square feet. A quarter acre is 10,890 square feet, and a third of an acre is 14,520 square feet. Each fraction is simply 43,560 multiplied by the fraction.
- Why is an acre 43,560 square feet?
- The acre began as the area a team of oxen could plow in one day: one chain (66 feet) by one furlong (660 feet), which multiplies out to 43,560 square feet. When land surveying was standardized, that plowing-strip definition became the fixed unit we still use. It also means an acre has no required shape — any boundary enclosing 43,560 square feet is one acre.
- How many square feet is 2 acres?
- Two acres is 87,120 square feet. The same multiply-by-43,560 rule covers any value — 2.5 acres is 108,900 square feet and 3 acres is 130,680 square feet. For anything in between, type the acreage into the converter on this page.