calcs.homes
calcs.homes
Enter your lumber's thickness, width, and length to get total board feet and cost — switch to EU for cubic meters, the metric equivalent used for lumber pricing outside North America.
Estimate only — mill tally and grade can shift actual footage and price.
One board foot is 144 cubic inches of lumber — a 1 in × 12 in × 12 in piece. The formula is (thickness in × width in × length ft) ÷ 12. Multiply by quantity for a full order's total. In metric markets, lumber is priced by the cubic meter instead — switch the toggle above to see that math.
Multiply thickness (in) × width (in) × length (ft), then divide by 12. A 2x6 that's 8 ft long is (2 × 6 × 8) ÷ 12 = 8 board feet.
No — board foot is a volume measurement that includes thickness, while square footage is only area. A thicker board has more board feet for the same footprint.