Direct conversion
Convert square foot [ft²] to acre [ac] instantly with formula, examples, chart, and FAQs.
1 square foot [ft²] = 0.000023 acre [ac]
1 square foot [ft²] = 0.000023 acre [ac]
Example: 1 square foot [ft²] equals 0.000023 acre [ac].
Area conversions are derived from squared length relationships, using square metre as the reference unit and fixed factors such as 1 square foot = 0.09290304 square metre.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The square foot is an imperial and US customary area unit equal to 0.09290304 square meters.
HistorySquare feet come from foot-based customary measurement and remain widely used in property and building work.
Current useSquare feet are common for rooms, homes, offices, flooring, roofing, and rental space.
The acre is a land area unit equal to 43,560 square feet or about 4046.856 square meters.
HistoryThe acre has agricultural origins and became a standard land measure in customary systems.
Current useAcres are used for land parcels, farms, real estate, parks, and property planning.
| square foot [ft²] | acre [ac] |
|---|---|
| 1 | 0.000023 |
| 2 | 0.000046 |
| 5 | 0.000115 |
| 10 | 0.00023 |
| 20 | 0.000459 |
| 25 | 0.000574 |
| 50 | 0.001148 |
| 100 | 0.002296 |
| 1000 | 0.022957 |
Use this formula: 1 square foot [ft²] = 0.000023 acre [ac] Enter your value in the calculator and the result updates instantly.
1 square foot [ft²] equals 0.000023 acre [ac].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.