Quickly calculate board feet for lumber. In Board Foot Calculator, Enter thickness, width and length to estimate wood volume for construction, woodworking or purchasing needs.
Fill in your dimensions below.
Use decimals for fractions (e.g., .75 for 3/4″).
Board Foot Calculator – Easily Estimate Lumber Volume for Any Project
The Board Foot Calculator helps you determine the volume of lumber in board feet, a standard measurement used in woodworking and construction. Simply input the thickness, width and length of your wood in inches and the tool calculates the total board feet instantly.
Ideal for carpenters, builders, DIYers or anyone planning to buy or cut lumber. Avoid material waste and get accurate measurements before making purchases or starting a project.
No need for manual math, this tool simplifies lumber estimation so you can focus on the work that matters.
Your Attention, Please:
- 1 Bd. Ft. = 144 cubic inches
- Thickness uses the rough sawn dimension, not your final net dimension
- Board footage is the measurement when buying random widths and random lengths. To determine what to buy, convert your project parts into board footage and use that to estimate about how much you’ll need to buy.
- FYI: lumber under 1″ is calculated and expressed in square feet
How To Calculate Board Feet
Calculating board feet is a crucial skill for anyone working with lumber, whether you’re buying, selling, milling or estimating wood for a project. A board foot is a measure of volume for lumber equal to a board 1 inch thick, 12 inches wide and 12 inches long.
What Is a Board Foot?
1 board foot = 1″ (thick) × 12″ (wide) × 12″ (long)
This is equal to 144 cubic inches, or 1/12 of a cubic foot
