Linear Feet to Square Feet Calculator

Enter a linear footage and a material width to calculate total square feet of coverage.

How to Use the Linear Feet to Square Feet Calculator

Enter a linear footage and a material width, choosing whether that width is in inches or feet, and get the total coverage area.

square feet = linear feet × width (ft)

Lumber, trim, and flooring are usually priced per linear foot, but installed area is what actually gets compared against a room — a 6" wide floorboard sold by the linear foot covers only half a square foot per foot of length, not the full one, which trips people up when converting a linear-foot material price into a per-square-foot coverage cost. The width toggle exists because board widths are almost always quoted in inches, while some flooring specs list it in feet instead.