Board Foot Calculator
Calculate board feet and lumber cost from thickness, width and length.
Enter your values to see the result.
Continue your work
- Stud Calculator — Count framing lumber.
- Cubic Feet Calculator — Convert volumes.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the Board Foot Calculator
Calculate board feet and lumber cost from thickness, width and length.
- 1 Enter the thickness and width in inches.
- 2 Enter the length and number of boards.
- 3 Read the board feet and cost.
Example and practical tips
Ten 2 × 6 boards 8 ft long total 80 board feet.
Frequently asked questions
What is a board foot?
A piece 12 × 12 in and 1 in thick, or 144 cubic inches.
Nominal or actual size?
Hardwood is priced by nominal (rough) size; use the size the supplier quotes.
Report an issue
Something broken or not quite right? Tell us and we will look into it.