Linear Feet to Square Feet Calculator
Convert linear feet of a board or roll to square feet from its width, or square feet to the linear feet you need.
Change the values and press Calculate to work out your own figures.
Linear feet to square feet
Enter the length and the material's width.
Show the working
- square feet = linear feet × width in feet
Square feet to linear feet
Enter the area and the material's width.
Show the working
- linear feet = square feet ÷ width in feet
How to use it
Enter the length and the material's width. Enter the area and the material's width.
Lengths can be decimals, fractions or tape entries such as 12' 6 1/2" (in feet or inches). Prices are optional.
Key facts
square feet = linear feet × width (ft); linear feet = square feet ÷ width (ft)
Questions
How many square feet is 12 linear feet of 6 in board?
6 sq ft.
Formulas
square feet = linear feet × width (ft); linear feet = square feet ÷ width (ft)
Sources
Limitations
- Material densities are typical values (the midpoint of the commonly published range); real loads vary with moisture, grading and compaction, so check with your supplier or type in their density.
- Tank results are the geometric volume; real tanks have wall thickness and fittings.