Board Foot Calculator
Calculate board feet for lumber and building materials with precise measurements for woodworking and construction projects
Number of pieces with these dimensions
Thickness of the lumber piece
Width of the lumber piece
Length of the lumber piece
Cost per board foot for total price calculation
Enter your lumber dimensions to calculate board feet
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How to Use This Calculator
Step-by-step guide to get accurate results
What is a Board Foot Calculator?
A Board Foot Calculator helps you measure the volume of wood in board feet – a standard lumber unit. It’s essential for woodworkers, DIY enthusiasts, and construction professionals to estimate wood quantity and cost accurately.
How to Use the Calculator
Enter Number of Boards
Total identical pieces.
Add Dimensions
Thickness (inches), Width (inches), Length (feet or inches).
Optional: Price per Board Foot
For total cost calculation.
Click Calculate
Get board feet per piece, total board feet, and total cost instantly.
Tip
Measure accurately for precise results.
Key Features
Accurate Calculation
Uses standard lumber formulas.
Multiple Units
Accepts inches or feet.
Cost Estimation
Calculates total cost if price per board foot is provided.
Handles Multiple Boards
Calculates total volume for multiple pieces.
User-Friendly & Mobile-Friendly
Works on all devices.
Use Cases
Woodworkers & Carpenters
Plan furniture or cabinets.
DIY Projects
Avoid overbuying lumber.
Construction
Estimate wood for buildings.
Lumber Buyers/Sellers
Compare costs and plan budgets.
Education
Learn board foot calculation.
Example Calculations
Example 1
Board: 2″ × 6″ × 8′ | Board Feet = (8 × 6 × 2) ÷ 12 = 8 BF
Example 2
5 boards: 1.5″ × 4″ × 10′ | Per Board = (10 × 4 × 1.5) ÷ 12 = 5 BF | Total = 5 BF × 5 = 25 BF
Example 3 (Cost)
Price per BF = $3 | Total cost = 25 × 3 = $75
Frequently Asked Questions
What is a board foot?
1 board foot = 1′ × 1′ × 1″ of wood.
Why use a board foot calculator?
To save time and reduce calculation errors.
Can I use inches or feet?
Yes, both are supported.
Can it handle multiple boards?
Yes, it calculates total volume.
Can I calculate cost?
Yes, if price per board foot is provided.
Is it suitable for DIY projects?
Yes, perfect for professionals and hobbyists.
Does it account for waste?
No, it shows theoretical board feet.
Is it mobile-friendly?
Yes, works on all devices.
What formula is used?
Board Feet = (Thickness × Width × Length) ÷ 12
Is it used worldwide?
Mostly in the US and Canada; convert units for other regions.
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A board foot is a unit of measurement for lumber volume. One board foot equals 144 cubic inches or 1/12 cubic foot. It's calculated by multiplying thickness (inches) × width (inches) × length (feet) ÷ 12.
Calculation Formulas
Length in Feet
BF = (Length_ft × Width_in × Thickness_in) ÷ 12
Length in Inches
BF = (Thickness_in × Width_in × Length_in) ÷ 144
Key Conversions
1 Board Foot =144 cubic inches
1 Board Foot =1/12 cubic foot
Total BF =Number of pieces × BF per piece
Total Cost =Total BF × Price per BF
Example:A 2" × 6" × 8' board = (8 × 6 × 2) ÷ 12 = 8 board feet. For 10 pieces, total = 80 board feet.