Calculate square footage for rectangular, square, circular, triangular and L-shaped rooms from any units, with square meters, acres and cost.
About this tool
Calculate square footage for rooms and areas of several shapes.
How to use Square Feet Calculator
- Choose the shape and unit.
- Enter the measurements and how many rooms.
- Read the square feet and other units, plus cost if you entered a price.
Worked example
A 12 × 10 ft bedroom is 120 sq ft; flooring at 4 per sq ft costs about 480.
Feet and inches conversion
Convert inches to feet by dividing by 12. A room measuring 12 ft 6 in by 10 ft has an area of 12.5 × 10 = 125 square feet.
Irregular rooms and purchasing allowances
Split an L-shaped room into non-overlapping rectangles and add their areas. Keep measured area separate from any allowance for material cuts or waste.
How do I measure an L-shaped room?
Split it into two rectangles and enter both; the areas are added.
How many square feet are in a square meter?
About 10.76.
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