🪚 Lumber Calculator
Board feet for any framing project
About this calculator
A board foot is the standard unit for pricing lumber: 144 cubic inches, or thickness × width × length in inches divided by 144. Enter your board dimensions and quantity, and the calculator gives you the total board feet plus an estimated cost at your price per board foot. It also converts nominal sizes (like 2×4) to actual dimensions.
Tip: nominal 2×4 lumber is actually 1.5 × 3.5 inches — always work from actual dimensions when precision matters.