Lumber Calculator — Board Feet & Linear Feet
Price rough lumber and framing takeoffs faster. Pick a common nominal size or enter custom dimensions, then calculate board feet, linear feet, and estimated cost.
← More Free ToolsBoard foot formula: thickness × width × length ÷ 12. Linear feet is simply the number of boards times board length.
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Frequently Asked Questions
What is a board foot?
A board foot is a volume measurement equal to a board that is 1 inch thick, 12 inches wide, and 12 inches long. It is used to price hardwoods and rough-sawn lumber.
What is the difference between nominal and actual lumber size?
Nominal size is the name of the board, like 2×4 or 1×6. Actual dimensions are usually smaller after drying and planing, so always verify the real size when precision matters.
How do I price lumber by board foot?
Multiply the total board feet by the supplier price per board foot. This calculator does that automatically when you enter a board foot price.
What is the difference between linear feet and board feet?
Linear feet only measures length. Board feet measures volume, so thickness and width matter too. Ten 12-foot boards equal 120 linear feet, but the board foot total depends on the board size.
When should I use board feet instead of piece count?
Use board feet when you are buying hardwood, rough lumber, or custom-milled stock. Piece count is fine for standard framing packages sold by length and bundle.
Need a quote that matches the cut list?
Use a professional estimate from the Wingman Protocol store so board footage, waste, and markup are documented before you place the order.