Board Foot Calculator
Calculate board feet for lumber projects. Essential for estimating wood costs for carpentry and construction.
A "board foot" is a unit of volume for timber in the United States and Canada. It equals the volume of a one-foot length of a board one foot wide and one inch thick.
Calculator Inputs
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Results
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How It Works
Enter the dimensions of your lumber (Thickness × Width × Length). If using different units, the calculator adjusts automatically. Multiplied by quantity and price to estimate project costs.
Worked Examples
2x4 lumber, 8 feet long (10 pieces)
2" × 4" × 8'= Input(2 × 4 × 8) / 12= 5.33 BF5.33 × 10= 53.33 BFTips & Best Practices
- •Standard nominal lumber sizes (2x4) are actually smaller (1.5x3.5), but board feet are usually calculated on nominal (rough) size before surfacing.
- •1 Board Foot = 144 cubic inches.
Frequently Asked Questions
What is the formula for board feet?
Board Feet = (Thickness in inches × Width in inches × Length in feet) / 12.
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