Board feet calculator

Convert lumber dimensions to board feet, cubic feet and metres, with an optional cost total.

Board feet = thickness (in) × width (in) × length (ft) ÷ 12. Nominal lumber sizes differ from actual dressed sizes — use the actual measurement for an accurate count.

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How to use

  1. Enter thickness and width in inches and the length in feet or inches.
  2. Set the piece count and optional price per board foot.
  3. Read total board feet and volume.

What it supports

Board feet = thickness(in) × width(in) × length(ft) ÷ 12. Nominal lumber names differ from dressed sizes — a 2x4 is really ~1.5x3.5 — so measure the actual piece. Positive dimensions and a whole piece count required.

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