✨ Free Online Tool
Square Feet to Acres
Convert square feet to acres instantly and use the area calculator to measure land, lots, yards, and property sizes.
Square Feet to Acres Converter
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All Square Foot Calculators
Choose a specialized calculator for your specific project type.
🏠
Room Calculator
Calculate the square footage of any room. Includes presets for bedrooms, kitchens, bathrooms, and more.
Calculate Room Area →🪵
Flooring Calculator
Figure out how much flooring material you need, including a waste factor for hardwood, laminate, vinyl, or carpet.
Calculate Flooring →🔲
Tile Calculator
Calculate area and the exact number of tiles needed based on tile size and grout gap spacing.
Calculate Tiles →🪨
Concrete Calculator
Calculate the area and volume of concrete needed in cubic yards, with adjustable depth/thickness.
Calculate Concrete →🧱
Wall Calculator
Measure wall area for painting, wallpaper, or siding. Supports multiple walls and door/window deductions.
Calculate Wall Area →📐
Triangle Calculator
Calculate square footage for triangular spaces using base and height, with support for different triangle types.
Calculate Triangle →🔷
Odd Shapes Calculator
Calculate area for irregular and L-shaped rooms by combining multiple rectangles, triangles, and circles.
Calculate Odd Shapes →📏
Feet & Inches Calculator
Enter dimensions using separate feet and inches fields for precise measurements without decimal conversion.
Calculate with Inches →🗺️
Map Calculator
Draw shapes on an interactive map to calculate the square footage of land, lots, and properties.
Calculate on Map →Square Feet to Acres Conversion Formula
One acre is exactly 43,560 square feet. To convert sq ft to acres, divide by 43,560.
Acres = Square Feet ÷ 43,560
To convert acres back to square feet, multiply by 43,560. This converter is useful for land sales, agricultural planning, zoning, and tax assessments.
Quick Reference Conversion Table
| Square Feet | Acres |
|---|---|
| 1,000 sq ft | 0.02296 acres |
| 5,000 sq ft | 0.11479 acres |
| 10,000 sq ft | 0.22957 acres |
| 21,780 sq ft | 0.5 acres |
| 43,560 sq ft | 1 acre |
| 87,120 sq ft | 2 acres |
| 217,800 sq ft | 5 acres |
| 435,600 sq ft | 10 acres |
How to Convert Square Feet to Acres
- Measure your land area: Calculate or obtain the total square footage of your property or lot.
- Divide by 43,560: This gives the acreage. For example, 87,120 sq ft ÷ 43,560 = 2 acres.
- Round as needed: Land is often described in hundredths of an acre (e.g., 0.25 acres = 10,890 sq ft).
Relationship to Other Land Units
| Unit | Square Feet |
|---|---|
| 1 acre | 43,560 sq ft |
| 1 hectare | 107,639 sq ft |
| 1 sq mile | 27,878,400 sq ft |
| 1 sq km | 10,763,910 sq ft |
All Square Foot Calculators
Choose a specialized calculator for your specific project type.
Room Calculator
Calculate the square footage of any room. Includes presets for bedrooms, kitchens, bathrooms, and more.
Calculate Room Area →Flooring Calculator
Figure out how much flooring material you need, including a waste factor for hardwood, laminate, vinyl, or carpet.
Calculate Flooring →Tile Calculator
Calculate area and the exact number of tiles needed based on tile size and grout gap spacing.
Calculate Tiles →Concrete Calculator
Calculate the area and volume of concrete needed in cubic yards, with adjustable depth/thickness.
Calculate Concrete →Wall Calculator
Measure wall area for painting, wallpaper, or siding. Supports multiple walls and door/window deductions.
Calculate Wall Area →Triangle Calculator
Calculate square footage for triangular spaces using base and height, with support for different triangle types.
Calculate Triangle →Odd Shapes Calculator
Calculate area for irregular and L-shaped rooms by combining multiple rectangles, triangles, and circles.
Calculate Odd Shapes →Feet & Inches Calculator
Enter dimensions using separate feet and inches fields for precise measurements without decimal conversion.
Calculate with Inches →Map Calculator
Draw shapes on an interactive map to calculate the square footage of land, lots, and properties.
Calculate on Map →Inches Calculator
Calculate square footage from inch-based measurements and convert the result to square feet.
Calculate Inches →Height Calculator
Use height-based dimensions for walls, triangles, and other square footage projects.
Calculate with Height →Circle Calculator
Find the square footage of circular areas from radius measurements.
Calculate Circle Area →Rectangle Calculator
Calculate rectangular square footage from length and width for rooms, floors, and lots.
Calculate Rectangle →Cylinder Calculator
Estimate area measurements for round projects and cylindrical surfaces.
Calculate Cylinder →Driveway Calculator
Calculate driveway square footage for concrete, asphalt, gravel, or paver projects.
Calculate Driveway →Roof Calculator
Estimate roof square footage for shingles, underlayment, and roofing materials.
Calculate Roof Area →Garden Calculator
Measure garden beds, lawns, mulch areas, soil coverage, and landscaping spaces.
Calculate Garden Area →House Calculator
Calculate house square footage for rooms, additions, renovations, and floor plans.
Calculate House Area →Google Maps Area Calculator
Calculate land and property area with a map-style square footage calculator.
Calculate Map Area →Price Per Sq Ft Calculator
Compare homes, materials, land, and projects by price per square foot.
Calculate Price →Rent Per Sq Ft Calculator
Calculate rent per square foot for apartments, offices, retail, and warehouse spaces.
Calculate Rent →App Calculator
Use a fast square foot calculator app-style page for common area measurements.
Open App Calculator →Sq Ft to Yards Calculator
Convert square feet to square yards for flooring, carpet, fabric, and materials.
Convert to Yards →Sq Ft to Meters Calculator
Convert square feet to square meters for international area measurements.
Convert to Meters →India Calculator
Calculate square footage for flats, plots, houses, flooring, and construction in India.
Calculate for India →Frequently Asked Questions
There are exactly 43,560 square feet in one acre.
Divide the square footage by 43,560. A 130,680 sq ft lot = 130,680 ÷ 43,560 = 3 acres.
Half an acre = 43,560 ÷ 2 = 21,780 sq ft.
A quarter acre = 43,560 ÷ 4 = 10,890 sq ft. Typical suburban lots are 0.2–0.5 acres (8,712–21,780 sq ft).
No. An acre is defined by area only (43,560 sq ft). It can be any shape — square, rectangular, L-shaped, or irregular — as long as the total area equals 43,560 sq ft.