Calculate the square footage of a room or space, and the total cost based on a price per square foot.
The Square Footage Calculator finds the area of a rectangular room or space, and optionally the cost of materials or work priced per square foot.
It is a quick way to plan flooring, painting, carpeting, or any project quoted per square foot, without doing the multiplication by hand.
Area (sq ft) = Length × Width. Total Cost = Area × Price per Square Foot.
A room measuring 20 ft by 15 ft covers 300 square feet. At $4 per square foot for flooring, the material cost would be about $1,200.
Length × width for rectangular spaces; irregular spaces broken into rectangles and summed.
It's the basis for material estimates and a standard metric for comparing property size.
Standard livable square footage usually excludes these, though conventions vary.