Board Foot Calculator
Calculate board feet for lumber.
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Calculate board feet
Board feet are a common lumber volume measure used for hardwoods and rough lumber. Enter board length, width, thickness and quantity to calculate total board feet and board feet per piece. It is useful for woodworking, lumber quotes, furniture projects and material planning.
Lumber volume in board feet
The formula uses inches for length, width and thickness, then divides by 144.
Frequently asked questions
What is a board foot?
A board foot is a lumber volume equal to 144 cubic inches.
What formula is used?
Board feet equals length times width times thickness in inches, divided by 144, then multiplied by quantity.
Can I use feet for length?
This calculator uses inches for all dimensions. Convert feet to inches before entering length.