Square Feet of a Rectangle Calculator

Your details

Choose the unit your tape measure readings are in. The area output is always in square feet.
The longer dimension of the rectangle in the chosen unit.
ft
The shorter dimension of the rectangle in the chosen unit.
ft
Extra material to order for cuts and waste. 10% is standard for flooring; 15-20% for diagonal or patterned tile.
%
Price per square foot. Leave at 0 to skip cost estimation.
$/sq ft
Area
120sq ft

Net area of the rectangle in square feet

Area (sq yd)13.33sq yd
Area (m²)11.15m²
Perimeter44ft
Diagonal15.62ft
Area with waste120sq ft

120.00 square feet

  • A 12.00 ft x 10.00 ft rectangle covers 120.00 sq ft (13.33 sq yd or 11.15 m²).
  • The perimeter is 44.00 ft - useful for edging, trim, or baseboards.

Next stepFor rooms with doors, windows, or alcoves, calculate each sub-rectangle separately and add the results together.

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