Square Footage Calculator
Calculate total square footage from room dimensions — add multiple rooms.
Flooring, paint, carpet, and real estate listings all rely on square footage — this adds up multiple rooms into a running total, since most real spaces aren't a single rectangle.
Why room-by-room beats guessing a whole-house average
Measuring each room individually and summing the totals is far more accurate than estimating an entire floor's square footage at once, especially with hallways and irregular layouts.
Frequently asked questions
Should I include closets and hallways in my total?
For flooring or paint estimates, yes. For real estate square footage, conventions vary by region.
How do I measure an irregularly shaped room?
Break it into rectangles, calculate each section separately, then add them as separate "rooms".