Project estimates

Square Footage Calculator

Calculate the square footage of any rectangular area and convert to square meters, square yards, and acres. Use this Construction and home tool to enter your numbers, review the result, and understand the key assumptions before making the next decision.

What you get
A focused calculator, clear explanation, common questions, and useful next tools.
Quick intro
Calculator
Result
Explanation
Common questions
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Calculator tool

How this calculator works
The result depends on the numbers you enter and the assumptions shown below.

Square footage = length (ft) × width (ft). Used for flooring, painting, landscaping, and real estate. 1 sq yd = 9 sq ft; 1 sq m = 10.764 sq ft; 1 acre = 43,560 sq ft.

Review the inputs carefully and treat the output as an estimate. For decisions involving money, taxes, health, law, or security, compare the result with trusted professional guidance when needed.

Frequently asked questions

How do I calculate square footage for an L-shaped room?

Break the L-shape into two rectangles, calculate each area, and add them together. This works for any irregular shape that can be divided into rectangles.