Square Feet (sq ft) to Acres Converter
Enter a value to instantly convert between area units.
1 Square Foot = 0 Acre
Key Formulas
Acre → Square Foot
ft² = ac × 43560Square Foot → Acre
ac = ft² × 0.0000229568Hectare → Acre
ac = ha × 2.47105Acre → Hectare
ha = ac × 0.404686Formula
ac = ft² × (0.09290304 / 4046.8564224)Divide square feet by 43,560 to get acres. In square meters, 1 ft² is 0.09290304 m² and 1 ac is 4,046.8564224 m², which gives about 0.0000229568 acres per square foot. Builders, appraisers, and homeowners use this pair to turn a lot size from a plat or a county record into the acreage that listings quote. A 10,000 ft² lot is about 0.2296 acres. Multiplying by a rounded 0.000023 overstates the acreage by about 0.2%.
Reviewed by the Convert Calc editorial team · Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
A 10,000 sq ft suburban lot, converted for a county acreage form.
10000 ft² = 0.2295684114 ac
A half-acre lot (21,780 ft²) checked against its acreage listing.
21780 ft² = 0.5 ac
A 100,000 sq ft commercial parcel quoted in acres.
100000 ft² = 2.295684114 ac
A 500,000 sq ft industrial site, converted for a zoning filing.
500000 ft² = 11.47842057 ac