Q:
# How Do You Convert Linear Feet to Square Feet?

**If the width of the material in inches and the linear length in feet are both known, convert the width to a fraction of a foot, then multiply width times length to find square footage.** For example, the square footage of a board 6 inches wide and 6 feet long is represented by the formula W (.5 ft) x L (6 ft) = 3 sq. ft.

Credit:
Hero Images
Hero Images
Getty Images

Linear feet are a measure of length, not area, so a key piece of information -- the width -- is needed to calculate square footage. The lumber industry typically sells boards by linear feet and doesn't take the width into account, so it must be added to the equation. The key is to ensure consistent units are used throughout the calculation.

With lumber this can be tricky, since the width is not always exact. For example, a typical 2x4 actually measures 1 1/2 inches by 3 1/2 inches, not 2 inches by 4 inches, so to calculate square feet, you must convert the 3 1/2-inch width into a percentage of 1 foot (in this case, divide 3.5 by 12 for a result of .29 feet). Rounding up is a good practice since there are slight variations in lumber sizes.

Alternatively, you can perform the calculations in inches, then divide the result by 144 (12 by 12) to determine square footage. For the 2x4 example, use the 3.5 inches, then convert the linear feet to inches. Multiply width times length, and divide that result by 144 to get the total square footage. This can be a useful method when measuring a room to estimate the lumber required for a floor or wall.

Learn more about Measurements-
Q:
## How Do You Calculate 64 Linear Feet Into Square Feet?

A: To convert 64 linear feet to square feet, you must determine the object's width and then multiply by 64. To calculate linear feet, the object must be flat. Full Answer >Filed Under: -
Q:
## How Do You Convert Feet to Square Feet?

A: To convert feet to square feet for a rectangular area, find the length of the area you are measuring, and multiply it by the width of the area. A square fo... Full Answer >Filed Under: -
Q:
## How Do You Convert Feet Into Square Yards?

A: Convert square feet into yards by multiplying the length of a space by the width of the space to calculate the area of the space. Divide the sum by 9 to ar... Full Answer >Filed Under: -
Q:
## How Large Is an Acre of Land?

A: An acre of land covers 43,560 square feet, so a 208.7 foot by 208.7 foot square of land is equivalent to one acre. This is 77 percent the size of an Americ... Full Answer >Filed Under: