Square Feet to Acres Conversion Chart
Quick Answer
1 ft² = 2.2957e-5 ac
Formula: Acre = Square Foot x 2.2957e-5
Quick values
Standards and method
Values are calculated from the shared conversion-factor library. Exact defined relationships are preserved; displayed results are rounded only for readability.
Maintained by Miguel Coelho. Updated . See our editorial policy.
Printable square feet to acres conversion chart
Lot, room and building areas in acres and square metres. Includes the exact definition, formulas, a worked example and sources. Conversion values are checked against the defining constants, and reference data is cited to its source, before the PDF is published.
Free to print, share and use in teaching materials with attribution (CC BY 4.0).
Square Feet to Acres Conversion Table
| Square Foot (ft²) | Acre (ac) |
|---|---|
| 1000 ft² | 0.0229568 ac |
| 2000 ft² | 0.0459137 ac |
| 2500 ft² | 0.0573921 ac |
| 5000 ft² | 0.114784 ac |
| 7500 ft² | 0.172176 ac |
| 10000 ft² | 0.229568 ac |
| 15000 ft² | 0.344353 ac |
| 20000 ft² | 0.459137 ac |
| 21780 ft² | 0.5 ac |
| 25000 ft² | 0.573921 ac |
| 30000 ft² | 0.688705 ac |
| 40000 ft² | 0.918274 ac |
| 43560 ft² | 1 ac |
| 50000 ft² | 1.14784 ac |
| 87120 ft² | 2 ac |
| 100000 ft² | 2.29568 ac |
| 217800 ft² | 5 ac |
| 435600 ft² | 10 ac |
Values are calculated from the shared conversion-factor library. Exact defined relationships are preserved; displayed results are rounded only for readability.
Full square feet to acres conversion chart
Lot, room and building areas in acres and square metres. These are the same tables as the printable PDF. For: Property buyers, agents, builders and landscapers.
- Exact definition
- 43,560 ft² = 1 acre exactly; 1 ft² = 0.092 903 04 m²
- Formula
- acres = ft² ÷ 43,560
- Reverse
- ft² = acres × 43,560
- Worked example
- 7,500 ft² ÷ 43,560 = 0.1722 ac
- Rounding
- Acres and hectares to 4 decimal places; square metres to 1 decimal place.
Lot sizes: square feet to acres
| Square feet (ft²) | Acres (ac) | Square metres (m²) | Hectares (ha) |
|---|---|---|---|
| 500 | 0.0115 | 46.5 | 0.0046 |
| 1,000 | 0.0230 | 92.9 | 0.0093 |
| 1,500 | 0.0344 | 139.4 | 0.0139 |
| 2,000 | 0.0459 | 185.8 | 0.0186 |
| 2,500 | 0.0574 | 232.3 | 0.0232 |
| 3,000 | 0.0689 | 278.7 | 0.0279 |
| 4,000 | 0.0918 | 371.6 | 0.0372 |
| 5,000 | 0.1148 | 464.5 | 0.0465 |
| 6,000 | 0.1377 | 557.4 | 0.0557 |
| 7,500 | 0.1722 | 696.8 | 0.0697 |
| 8,000 | 0.1837 | 743.2 | 0.0743 |
| 10,000 | 0.2296 | 929.0 | 0.0929 |
| 12,000 | 0.2755 | 1,114.8 | 0.1115 |
| 15,000 | 0.3444 | 1,393.5 | 0.1394 |
| 20,000 | 0.4591 | 1,858.1 | 0.1858 |
| 21,780 | 0.5000 | 2,023.4 | 0.2023 |
| 25,000 | 0.5739 | 2,322.6 | 0.2323 |
| 30,000 | 0.6887 | 2,787.1 | 0.2787 |
| 40,000 | 0.9183 | 3,716.1 | 0.3716 |
| 43,560 | 1.0000 | 4,046.9 | 0.4047 |
| 50,000 | 1.1478 | 4,645.2 | 0.4645 |
| 75,000 | 1.7218 | 6,967.7 | 0.6968 |
| 87,120 | 2.0000 | 8,093.7 | 0.8094 |
| 100,000 | 2.2957 | 9,290.3 | 0.9290 |
| 217,800 | 5.0000 | 20,234.3 | 2.0234 |
| 435,600 | 10.0000 | 40,468.6 | 4.0469 |
| 1,000,000 | 22.9568 | 92,903.0 | 9.2903 |
Rooms and homes: square feet to square metres
| Square feet (ft²) | Square metres (m²) |
|---|---|
| 50 | 4.65 |
| 75 | 6.97 |
| 100 | 9.29 |
| 125 | 11.61 |
| 150 | 13.94 |
| 175 | 16.26 |
| 200 | 18.58 |
| 225 | 20.90 |
| 250 | 23.23 |
| 275 | 25.55 |
| 300 | 27.87 |
| 325 | 30.19 |
| 350 | 32.52 |
| 375 | 34.84 |
| 400 | 37.16 |
| 425 | 39.48 |
| Square feet (ft²) | Square metres (m²) |
|---|---|
| 450 | 41.81 |
| 475 | 44.13 |
| 500 | 46.45 |
| 600 | 55.74 |
| 700 | 65.03 |
| 800 | 74.32 |
| 900 | 83.61 |
| 1,000 | 92.90 |
| 1,100 | 102.19 |
| 1,200 | 111.48 |
| 1,300 | 120.77 |
| 1,400 | 130.06 |
| 1,500 | 139.35 |
| 1,600 | 148.64 |
| 1,700 | 157.94 |
| 1,800 | 167.23 |
| Square feet (ft²) | Square metres (m²) |
|---|---|
| 1,900 | 176.52 |
| 2,000 | 185.81 |
| 2,100 | 195.10 |
| 2,200 | 204.39 |
| 2,300 | 213.68 |
| 2,400 | 222.97 |
| 2,500 | 232.26 |
| 2,600 | 241.55 |
| 2,700 | 250.84 |
| 2,800 | 260.13 |
| 2,900 | 269.42 |
| 3,000 | 278.71 |
| 3,500 | 325.16 |
| 4,000 | 371.61 |
| 5,000 | 464.52 |
Sources for this chart
Conversion values on this sheet are generated by the AllUnitConversions conversion library and automatically checked against the exact definitions above before the PDF is produced; reference tables are taken from the sources listed.
- International Yard and Pound Agreement (1959) — 1 in = 25.4 mm, 1 ft = 0.3048 m, 1 lb = 0.453 592 37 kg exactly
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Related Converters & Charts
Square Feet to Acres Conversion Chart FAQs
Common questions about the square feet to acres conversion chart.
How do you convert square foot to acre?
Multiply the number of square foot by 2.2957e-5. For example, 1 ft² = 2.2957e-5 ac. The chart above lists the most common values.
What is 1 ft² in acre?
1 ft² equals 2.2957e-5 ac. See the full reference table above for more values, or download the printable PDF.
What exact definition is this square feet to acres chart based on?
43,560 ft² = 1 acre exactly; 1 ft² = 0.092 903 04 m². Formula: acres = ft² ÷ 43,560. Acres and hectares to 4 decimal places; square metres to 1 decimal place.
Can I download this chart as a PDF, CSV, or JSON?
Yes. Use the Download A4 PDF or US Letter PDF buttons for a printable version, or download the same tables as CSV or JSON from the links on this page.