1. What is Board Feet (BF) Calculation?

Definition: Board feet is a measurement of lumber volume that accounts for thickness, width, and length.

Purpose: It helps carpenters, woodworkers, and lumber suppliers quantify and price wood materials accurately.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BF \) — Total board feet
• \( T \) — Thickness (inches)
• \( W \) — Width (inches)
• \( L \) — Length (feet)
• \( Q \) — Quantity (number of pieces)

Explanation: The formula calculates volume in board feet (1 board foot = 1" × 12" × 12") and multiplies by quantity.

3. Importance of Board Feet Calculation

Details: Accurate BF calculation ensures proper material estimation, cost control, and project planning in woodworking projects.

4. Using the Calculator

Tips: Enter thickness and width in inches, length in feet, and quantity of pieces. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 12 in the formula?
A: This converts the inches×inches×feet measurement into board feet (144 cubic inches = 1 board foot).

Q2: How do I calculate BF for multiple pieces?
A: Either multiply the single-piece BF by quantity, or enter total dimensions (e.g., total length).

Q3: Does thickness include planing/surfacing?
A: Use nominal dimensions (pre-planed size) for rough lumber, actual dimensions for surfaced lumber.

Q4: How do I calculate BF for round logs?
A: Use Doyle, Scribner, or International log rules - this calculator is for sawn lumber only.

Q5: What's a typical board foot price?
A: Varies by species and quality - common hardwoods range $2-$10/BF, softwoods $0.50-$3/BF.