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Square Footage Calculator
All measurements in feet
Area
120 ftΒ²
Square Feet
120
Square Meters
11.15
Acres
0.0028
Materials Estimate (+10% waste)
Flooring132 ftΒ²
Paint (350 ftΒ²/gal)0.38 gal
Tiles (1 ftΒ² each)132 tiles
Sod rolls (9 ftΒ² each)15 rolls
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How to Use the Square Footage Calculator
- Select the shape of your area
- Enter the measurements
- View square footage and unit conversions
- Use material estimates for projects
Area Formulas
- Rectangle - Length Γ Width
- Circle - Ο Γ radiusΒ²
- Triangle - (Base Γ Height) / 2
- Trapezoid - (Top + Bottom) Γ Height / 2
Ad Space (336x280) Ad Space (300x250)
Frequently Asked Questions
How do I calculate square footage?
For rectangles: Length Γ Width. For triangles: (Base Γ Height) / 2. For circles: Ο Γ radiusΒ².
How many square feet in an acre?
One acre equals 43,560 square feet. A football field (without end zones) is about 1.1 acres.
How do I measure irregular rooms?
Break the room into rectangles, calculate each area separately, then add them together.
How much flooring do I need?
Calculate square footage, then add 10% for waste and cuts. Buy materials accordingly.