For more information on board foot calculations, visit this helpful resource.
How to Use This Calculator
Simply input the width and thickness in inches, and the length in feet for each piece of lumber. Enter the quantity of pieces you have. If you’d like to include a waste factor, enable the Advanced Options to account for cuts, knots, or material loss.
Table of Common Board Foot Values
| Dimensions (Inches) | Length (Feet) | Board Feet (Each) |
|---|---|---|
| 2×4 (Actual 1.5″ × 3.5″) | 8 | 1.17 |
| 2×6 (Actual 1.5″ × 5.5″) | 8 | 1.83 |
| 2×8 (Actual 1.5″ × 7.25″) | 10 | 2.26 |
Examples
• Example 1: You have 5 pieces of 2″×6″ lumber, each 8 feet long.
Input 6 inches (width), 2 inches (thickness), 8 feet (length), and 5 for quantity.
The calculator returns total board feet, helping you quickly estimate your lumber needs.
• Example 2: You’re working with 1″×12″ boards, each 10 feet long.
Input 12 inches (width), 1 inch (thickness), 10 feet (length), and let’s say 2 for quantity.
The calculator will show your total board feet in seconds.
Frequently Asked Questions (FAQ)
What exactly is a board foot?
A board foot (bd ft) is a unit of measurement for lumber, equivalent to 144 cubic inches.
Why do I need a waste factor?
Waste factor accounts for mistakes, off-cuts, or defects in the wood. It’s useful to ensure you don’t run short of material.
Is this calculator suitable for all wood types?
Yes, as long as you have the basic thickness, width, length dimensions, and quantity, the formula applies universally.
