Board Feet Calculator
Calculate the total board feet of lumber based on dimensions and quantity. Useful for woodworking, construction, and lumber estimation.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator computes the total board feet of lumber. Board feet is a standard unit of volume for lumber in the US and Canada.
- Enter Thickness (inches) – e.g., 2
- Enter Width (inches) – e.g., 4
- Enter Length (feet) – e.g., 8
- Enter Number of Pieces – e.g., 10
- Click Calculate Board Feet
The result shows total board feet and the formula used: (Thickness × Width × Length × Quantity) / 12.
Important: All dimensions must be in inches except length, which must be in feet. Use positive numbers only.
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Frequently Asked Questions
A board foot is a unit of volume for lumber, equal to a piece 12 inches wide, 12 inches long, and 1 inch thick (144 cubic inches).
Multiply thickness (inches) by width (inches) by length (feet) by quantity, then divide by 12. Formula: (T × W × L × Q) / 12.
No, this calculator uses inches for thickness and width, and feet for length. For metric, convert dimensions to inches and feet first.
