Acres to Square Feet (ac to ft²) Converter
A complete land area converter for real estate and planning. Use the 'Area from Dimensions' tool for a plot, or the multi-unit converter for `acres`, `ft²`, `m²`, `hectares`, and `yd²`.
Calculate Area from Dimensions
Enter plot dimensions in feet to instantly find the area in both ft² and acres.
Multi-Unit Area Converter
Enter a value in any field to convert between all common land units.
How to Convert Acres to Square Feet
The conversion between acres and square feet is a fixed definition used in the United States and other countries using imperial or US customary units. It is essential for real estate, land surveying, and agriculture.
The Exact Formula
The relationship is an exact integer, defined by law:
To convert from acres to square feet, you **multiply the acre value by 43,560**.
- Formula:
ft² = acres × 43,560 - Example:
0.25 acres × 43,560 = 10,890 ft²
How to Convert Square Feet to Acres
To convert the other way, you **divide the square feet value by 43,560**.
Common Lot Size Conversions (Acres to ft²)
| Acres | Square Feet (ft²) | Approx. Plot Size (ft) |
|---|---|---|
| 0.10 acre | 4,356 ft² | ~ 66' x 66' |
| 0.25 acre (1/4) | 10,890 ft² | ~ 104' x 104' |
| 0.33 acre (1/3) | 14,356 ft² | ~ 120' x 120' |
| 0.50 acre (1/2) | 21,780 ft² | ~ 148' x 148' |
| 1 acre | 43,560 ft² | ~ 208.7' x 208.7' |
| 5 acres | 217,800 ft² | ~ 467' x 467' |
Frequently Asked Questions (FAQ)
What is the formula for acres to square feet (ft²)?
The formula is: Square Feet = Acres × 43,560.
How many square feet are in 1 acre?
There are exactly **43,560 square feet** in 1 acre.
What is an acre?
An acre is a unit of land area. It was historically defined as the amount of land a yoke of oxen could plow in one day. Legally, it is 1/640th of a square mile.
How big is an acre visually?
A simple way to visualize an acre is that it is **about 90% of an American football field** (including just the playing field, not the end zones).
Formula (LaTeX) + variables + units
','
1 Acre = 43,560 Square Feet (ft²)
Acres = Square Feet / 43,560
- No variables provided in audit spec.
- NIST — Weights and measures — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/weights-and-measures - NIST — SI units — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/owm/metric-si/si-units
Last code update: 2026-01-19
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