Lumber calculator

board foot calculator

Calculate total board feet and lumber cost from thickness, width, length, quantity, and price.

Result

Enter your numbers

Copyable output

Submit the form to generate a result.

Calculation basis

Board feet = thickness in x width in x length ft / 12 x quantity. Add waste when planning purchases.

FAQ

How do you calculate board feet?

Multiply thickness in inches by width in inches by length in feet, divide by 12, then multiply by quantity.

Can I enter multiple lumber sizes?

Yes. Enter one line per lumber size using thickness, width, length, and quantity.

Does this include waste?

Yes. Enter a waste percent to estimate a purchase quantity above the measured total.