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Square Feet to Acres
Convert square feet to acres or acres to square feet, with useful reference tables.
01 / YOUR MEASUREMENTS
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02 / YOUR ESTIMATE
At a glance
Enter your measurements, then calculate.
Keep full precision while calculating. Round only when planning or ordering.
See formulas & sources ↗The conversion
Divide square feet by 43,560 to get acres. Multiply acres by 43,560 to get square feet. These conversion factors are exact; displayed decimals are rounded.
Square feet reference table
| Square feet | Acres |
|---|---|
| 1,000 | 0.022957 |
| 2,000 | 0.045914 |
| 5,000 | 0.114784 |
| 10,000 | 0.229568 |
| 20,000 | 0.459137 |
| 30,000 | 0.688705 |
| 40,000 | 0.918274 |
| 43,560 | 1 |
| 50,000 | 1.147842 |
| 75,000 | 1.721763 |
| 100,000 | 2.295684 |
Reverse reference table
| Acres | Square feet |
|---|---|
| 0.1 | 4,356 |
| 0.25 | 10,890 |
| 0.5 | 21,780 |
| 1 | 43,560 |
| 2 | 87,120 |
| 3 | 130,680 |
| 4 | 174,240 |
| 5 | 217,800 |
| 6 | 261,360 |
| 7 | 304,920 |
| 8 | 348,480 |
| 9 | 392,040 |
| 10 | 435,600 |
An acre describes area, not shape. A long narrow parcel and a square parcel can have the same acreage.
Formulas and exact conversion constants: methodology and sources.