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Board Foot Calculator

Calculate board feet for hardwood or dimensional lumber from thickness, width, length and quantity, with total cost.

Thickness (in)

Width (in)

Length (ft)

Pieces

Price per board foot ($)

How to use it

Enter the nominal or actual thickness and width (hardwood is usually priced on rough size, e.g. 4/4 = 1 in).
Enter the length in feet and the number of pieces.
Add the price per board foot for a total.

How it works

1 board foot = 144 in³ (12 × 12 × 1 in). Board feet = thickness (in) × width (in) × length (ft) ÷ 12 × pieces.

FAQ

What is a board foot?

A volume of wood 1 ft long, 1 ft wide and 1 in thick (144 cubic inches).

How many board feet is a 2×4×8?

Nominally 2 × 4 × 8 ÷ 12 = 5.33 board feet.

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