All Calculators/Board Foot Calculator

Board Foot Calculator

Estimate total board feet and lumber cost for any project.

The board foot calculator converts lumber dimensions into board feet so you can price orders consistently. Enter thickness, width, and length for any number of boards and get the total board-foot count instantly. This is the standard unit of measure used by lumber yards and sawmills.
  • Add 15–20% overage for hardwoods to account for defects, knots, and waste from ripping.
  • Lumber is priced per board foot but sold in standard lengths — confirm your yard stocks your needed length before ordering.
  • Green (unseasoned) lumber shrinks as it dries; size up if the wood won't be kiln-dried before install.
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