How to use this board feet calculator
Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.
Formula and method
Example
Ten 2×6 boards that are 8 feet long equal 80 board feet using nominal dimensions.
What this calculator is useful for
Calculate lumber board feet from thickness, width, length and quantity. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
Frequently asked questions
What does the Board Feet Calculator calculate?
Calculate lumber board feet from thickness, width, length and quantity.
How does the calculation work?
Board feet = thickness(in) × width(in) × length(ft) ÷ 12 × quantity.
Is this calculator free?
Yes. ERICH Calculators is free to use and no account is required.