Board Foot Calculator

What is a board foot?

Unlike square footage, the board footage is a measurement of volume. It is used when purchasing multiple boards of lumber in various sizes.

By definition, one board foot of lumber is one square foot that is one inch thick. If you would like to convert regular volume units into board feet, use the following relation:

1 board foot = 144 cubic inches = 1/12 cubic foot

How to calculate board feet?

Surprisingly, the calculations are extremely easy! All you need to do is use the board foot formula below:

board feet = length(ft) * width(in) * thickness(in) / 12

Pay special attention to the units! The length of the wooden board should be expressed in feet, while the width and thickness - in inches.