Board Feet Calculator

Calculate the volume of lumber in board feet. Add multiple pieces to total your full project cut list.

#Thickness (in)Width (in)Length (ft)QtyBoard Feet
14.00

Thickness and width in inches · Length in feet · Fractions like 3/4 or 1-1/2 are supported

Total board feet4.00 BF
$

How board feet are calculated

Board Feet  =  (Thickness″ × Width″ × Length′) ÷ 12

A board foot is a unit of lumber volume equal to a piece 1″ thick, 12″ wide, and 12″ long (144 in³). It's the standard unit for pricing and purchasing hardwood lumber in North America.

1″ × 6″ × 8′(1 × 6 × 8) ÷ 12 = 4.00 BF
¾″ × 4″ × 10′(0.75 × 4 × 10) ÷ 12 = 2.50 BF
2″ × 8″ × 12′(2 × 8 × 12) ÷ 12 = 16.00 BF