Board Foot Calculator

Calculate board feet (BF) for lumber, timber, and woodworking. Enter your board dimensions in feet, inches, or centimeters, and get the total board feet and cost. Supports cost calculation and includes a helpful FAQ.

Board Dimensions

Length

Width

Thickness

Quantity

Cost per Board Foot (Optional)

Total Board Feet

4.0 BF

Frequently Asked Questions

A board foot is a unit of volume used for lumber, equal to 144 cubic inches (12 inches long by 12 inches wide by 1 inch thick). Unlike square footage, which measures area, board footage measures volume.

By definition, one board foot of lumber is one square foot that is one-inch thick. You use it when purchasing multiple boards of lumber in various sizes.

Conversion:

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