About Board Foot Calculate

Board Foot Calculate is a free online tool for figuring board feet, lumber weight and cost. It is built for woodworkers, contractors and anyone buying hardwood or softwood lumber who needs a quick, accurate number before heading to the yard.

What the Calculator Does

Enter the thickness, width, length and quantity of your boards, and the calculator returns total board feet, estimated weight and total cost based on the species you choose. Try it on the board foot calculator page, or read the formula behind the math if you want to check it by hand.

Why the Numbers Can Be Trusted

The formulas and reference figures used on this site are checked against official and authoritative sources, including the National Hardwood Lumber Association (NHLA), NIST’s American Softwood Lumber Standard, and The Wood Database. The full list of sources is at the bottom of the main calculator page.

If you are working with logs rather than sawn lumber, see the board feet in a log section for the Doyle, Scribner and International 1/4-inch rules.

A Note on Accuracy

This tool is provided for planning purposes. Always confirm final measurements and pricing with your lumber supplier before placing an order. See our Terms of Use for more on how the results should be used.

Questions or Feedback

If you notice an error or want to suggest an improvement, get in touch through the Contact section in the footer, or see our Privacy Policy for how we handle any information you send us.