To calculate linear feet, measure the total length of an item in feet and add all the lengths together. If your measurement is in inches, divide the total inches by 12. For materials such as flooring, lumber, or boards sold by length but used to cover an area, you may also need the material's width to calculate the required linear feet.
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What Are Linear Feet?
A linear foot (LF) is a unit of length equal to exactly 12 inches. It measures length in one dimension and does not account for an item's width, height, or thickness.
For example:
A 6-foot board equals 6 linear feet.
A 10-foot pipe equals 10 linear feet.
Four boards that are each 8 feet long equal 32 linear feet.
Linear feet are commonly used to estimate materials such as baseboards, fencing, lumber, pipes, countertops, trim, and handrails.
