Board Feet Calculator
Determine the volume of rough lumber in board feet using thickness and width in inches and length in feet.
Round up and add extra for waste when purchasing lumber.
Examples
- 2 in × 6 in × 8 ft ⇒ 8 bd ft
- 1 in × 8 in × 10 ft ⇒ 6.67 bd ft
- 1.5 in × 4 in × 12 ft ⇒ 6 bd ft
FAQ
What is a board foot?
A board foot equals 1 in × 12 in × 12 in of lumber volume.
Can I use metric measurements?
Convert to inches and feet before using the calculator.
Why divide by 12?
The factor converts cubic inches to board feet.
Should I add extra for waste?
Yes, purchase a bit more lumber to account for defects and cutting waste.
Additional Information
- One board foot equals 144 cubic inches of lumber.
- Formula: (Thickness × Width × Length) ÷ 12.
- Often used by carpenters and sawmills to price and estimate lumber.