Square Footage Calculator
Multiply length by width, then add up to two more rectangles when a space is not one simple box.
Use it when a room is more than one rectangle and you need the areas added together.
Compare scenarios
How we calculated this
Each area is length times width in feet. The total adds the rectangles you filled in. It does not subtract for angles, curves, or closets unless you leave them out of the measurements.
What does this mean?
The measured area is 216.0 square feet.
Your assumptions
Edit assumptions- Rectangles
- 1
This calculator provides an estimate for planning. Material yield, waste, prices, and local requirements may vary.
Embed
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How the estimate is calculated
Each area is length times width in feet.
Blank extra areas are ignored. If you fill one side of an extra area, the other side is required.
Area
Square feet equal length times width. Totals add each rectangle you complete.
Example
- Measure the longest and shortest walls of a rectangular room.
- Add a second rectangle for an L-shaped room.
- Use the total with the flooring, paint, or tile calculators.
With the numbers filled in on this page, the estimate is 216.0 sq ft.
What changes the result
Inches
Convert inches to feet before you type, or enter decimals. Six inches is 0.5 feet.
Closets and bays
Leave them out or add them as another rectangle.
Not living area
This is measured floor or wall-plan area, not a legal living-area figure for a listing.
Questions
How do I handle an L-shaped room?
Split it into two rectangles and use Area 1 and Area 2.
Can I enter inches?
The fields are feet. Use a decimal, such as 10.5 for 10 feet 6 inches.
Does this subtract cabinets?
No. Measure the floor you want included.