Board Foot to Square Feet

Board Foot Calculator

Board foot = thickness (in) × width (in) × length (ft) ÷ 12. Enter nominal sizes as billed, or switch to actual measured sizes.

Per piece: - board feet
Total: - board feet
With waste: - board feet
Cost with waste: $-
Cubic feet: -

Estimate only. Species prices vary by yard, region and date. Confirm the final tally and price with your lumber supplier before ordering.

Convert board feet to square feet for any thickness.

Formula

square feet = board feet / thickness in inches.

Worked example

20 board feet at 1 inch thick = 20 square feet; at 2 inches thick = 10 square feet. For flooring, add waste for cuts and end joints.

Estimate only. Confirm with your supplier before ordering.