Overview
What Is a Board Feet Calculator?
This tool calculates board feet, the standard volume measurement for lumber, based on thickness, width, and length.
Calculate board feet for lumber instantly.
This tool calculates board feet, the standard volume measurement for lumber, based on thickness, width, and length.
Useful for estimating lumber costs and quantities for woodworking or construction projects.
Input thickness, width, and length.
The result updates automatically.
A unit of lumber volume equal to a piece 12x12x1 inches (144 cubic inches).
Board Feet = (Thickness × Width × Length in inches) ÷ 144
Nominal dimensions (like '2x4') differ from actual finished dimensions (often 1.5x3.5 inches) due to milling - use actual dimensions for precise calculations.
No, board feet is a volume measurement (includes thickness); square feet is only area.
No, calculations happen entirely in your browser.
Yes, the board feet calculation is universal regardless of wood species.
Yes, since lumber (especially hardwood) is often priced per board foot, this helps estimate project costs.
Convert to inches first (multiply feet by 12), or adjust the formula's divisor accordingly.
Calculate one board at a time and multiply by quantity, or sum multiple board volumes together.
Yes, completely free with no sign-up required.