Board foot calculator

This board foot calculator helps woodworkers and carpenters quickly calculate board feet and estimate lumber costs. Enter your dimensions, specify units, and get instant results.

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Current board foot results

Board feet:0.00
Current Cost:$0.00

Board Foot Formula

(Thickness × Width × Length × Quantity) ÷ 144 = Board Feet

What is a Board Foot?

A board foot is a unit of volume for measuring lumber in North America. One board foot equals a piece of wood measuring 1 inch thick by 12 inches wide by 12 inches long, or 144 cubic inches.

How to Use This Calculator

  1. Enter the thickness and width of your lumber
  2. Enter the length (in feet or inches)
  3. Specify the quantity of pieces
  4. Enter the price per board foot to calculate total cost
  5. Click Add to Tally to track multiple lumber items

Common Applications

The board foot calculation is essential for:

  • Purchasing hardwood lumber for furniture making
  • Estimating costs for woodworking projects
  • Planning construction material requirements
  • Comparing lumber prices across different suppliers