Square Footage Calculator
The Square Footage Calculator converts length and width measurements into square feet, square yards, and acres — a quick reference for any home, land, or construction project.
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How This Tool Works
Enter the length and width of any space to instantly see its area in square feet, square yards, and acres.
Formula & Method
Square feet = length × width. Square yards = square feet ÷ 9. Acres = square feet ÷ 43,560.
Example Calculation
A 60×40 ft lot is 2,400 sq ft, which equals about 266.7 sq yards or 0.055 acres.
Frequently Asked Questions
How do I measure an irregular room?+
Break the space into simple rectangles, calculate each one's square footage separately, and add them together for the total.
How many square feet are in an acre?+
One acre equals 43,560 square feet, or about 208.7 feet on each side if it were a perfect square.
What's the difference between square feet and square yards?+
One square yard equals 9 square feet (a 3×3 ft area) — square yards are commonly used for carpet and fabric pricing.
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