Board Foot Calculator

Board feet (and m³) for a lumber list, with cost.

Runs in your browser — nothing is uploaded
Boards

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Material estimates only — add waste, confirm quantities with your supplier and follow local building codes. Not an engineering guarantee.

How to use Board Foot Calculator

  1. Enter your values — the unit for each field is shown next to it.
  2. The result updates instantly as you type.
  3. Copy the results, or change inputs to compare scenarios.

Formula & assumptions

Board feet = thickness (in) × width (in) × length (ft) ÷ 12