Lumber Calculator
NEWCalculate board feet, total linear feet, volume, and estimated cost for lumber projects. Enter nominal dimensions and quantity for instant results.
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How to use Lumber Calculator
- Enter the nominal thickness and width in inches, and length in feet.
- Set the quantity of identical pieces and optional pricing information.
- Click Calculate to see board feet per piece, total board feet, linear feet, and cost.
What is Lumber Calculator?
A lumber calculator computes board feet (BF), the standard unit of measurement for hardwood and softwood lumber. One board foot is a volume of 1 inch x 12 inches x 12 inches (144 cubic inches). Lumber is priced per board foot in most markets.
This calculator also computes linear feet, volume in cubic feet, and estimated cost at your entered price per board foot or per linear foot. It works with both inch and centimeter inputs.
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FAQ
- What is a board foot?
- A board foot is a unit of volume equal to 1 inch thick x 12 inches wide x 12 inches long (144 cubic inches). The formula is: (thickness x width x length) / 12.
- What is the difference between nominal and actual size?
- Nominal size is the labeled size (e.g., 2x6) while actual size is smaller due to milling (e.g., 1.5 x 5.5 inches). Use nominal dimensions for the board feet formula.
- How much does lumber cost per board foot?
- Prices vary by species and grade. Common softwood (pine/fir) runs $0.50-$1.50/BF. Hardwoods (oak, maple) range from $3-$8/BF or more.
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