Area Calculators
Almost every construction estimate starts with one number: square footage. This calculator handles the rectangle math quickly and cleanly, and it is the natural first step before any material tool — concrete, flooring, paint, and roofing estimates all begin with area. Get the area right and everything downstream gets easier.
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Area FAQs
Split the L into two rectangles, calculate length × width for each, and add the results. The square footage calculator handles each rectangle — you handle the splitting, which also helps with material layout planning.
For material estimates, measure each finished area separately and add them together — include closets only if they will receive the same material. Real-estate square footage follows different rules, so do not mix the two.
Estimates are planning guides, not professional advice. Read the disclaimer.