Calculators
Square Footage Calculator
Calculate area in square feet.
FreeNo sign-upWorks in your browser
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Result
Square footage
300 sq ft
Square yards
33.33
Acres
0.0069
About the Square Footage Calculator
Measuring a room, yard, or lot? Enter the length and width and the calculator returns the area in square feet, square yards, and acres. It's essential for flooring, paint, landscaping, and real-estate estimates.
How to use the Square Footage Calculator
- 1Enter your length and width.
- 2Read the result instantly — it recalculates as you type.
- 3Adjust the numbers to model different scenarios.
Frequently asked questions
How do I calculate square footage?
Multiply length by width, both in feet. A 20 ft × 15 ft room is 300 square feet.
How many square feet in an acre?
43,560 square feet. This tool converts your area to acres automatically.