Just enter how many boards you have, plus their thickness, width, and length — we’ll handle the math and show you the board feet instantly.
Result:
Board Foot Calculator – Instantly Measure Lumber Volume
Planning a woodworking, construction, or furniture project? Use our Board Foot Calculator to quickly and accurately determine how much lumber you need—no manual math or messy conversions required.
What is a Board Foot?
A board foot is a unit of measurement used for lumber. It represents a volume of wood:
javaCopyEdit1 board foot = 12 inches (L) × 12 inches (W) × 1 inch (T)
This calculator helps you figure out how many board feet are in your piece of lumber using a simple formula:
mathematicaCopyEditBoard Feet = (Thickness × Width × Length) ÷ 12
How to Use the Board Foot Calculator
- Enter Thickness (in inches)
- Enter Width (in inches)
- Enter Length (in feet)
- Click “Calculate”
✅ You’ll immediately get the total board feet for your lumber.
Why Use This Tool?
| Feature | Benefit |
|---|---|
| 🎯 Accurate Estimates | Never over- or under-buy wood again |
| 🛠️ Perfect for Projects | Great for flooring, decking, fencing, and framing |
| 📲 Mobile Responsive | Use it on-site or in-store from your phone |
| 🆓 100% Free & Ad-Free | No fees, no sign-up, just clean and fast results |
| ⏱️ Instant Output | Real-time calculations without waiting or errors |
Who Should Use This Calculator?
- 👷 Builders & Contractors ordering wood for construction
- 🪚 Woodworkers estimating materials for furniture and crafts
- 🏡 DIY Enthusiasts planning home renovations
- 📐 Students learning board foot calculations in carpentry/math
- 💼 Lumber Retailers helping customers make informed decisions
FAQs
Why divide by 12 in the formula?
Because thickness and width are in inches, and length is in feet. Dividing by 12 converts the total into board feet.
Can I enter decimal values?
Yes! You can use decimals or fractions like 1.25 or 3/4 for precision.
Does this work for all wood types?
Yes, it works for any wood as long as you have the correct measurements.
Is this really free?
100% free with unlimited usage. No logins. No restrictions.