Board Feet Calculator
Professional board feet calculator and lumber volume estimation tool for woodworking projects. Calculate accurate board feet measurements from lumber length, width, and thickness dimensions with real-time results, comprehensive cost analysis, and waste factor calculations for professional woodworkers and carpenters.
⚠️ LUMBER MEASUREMENT NOTICE
Board feet calculations are based on nominal lumber dimensions. Actual lumber dimensions may vary. Always verify measurements and account for waste in your project planning. Consult lumber specifications for precise dimensions.
Lumber Dimensions
Single Piece Calculation
Multiple Pieces
Cost Analysis
Calculation Results
Enter lumber dimensions and click "Calculate Board Feet" to see your volume and cost analysis.
Board Feet Formula
Board feet = (Length × Width × Thickness) ÷ 144. This standard formula calculates lumber volume in board feet using inches for all dimensions.
Lumber Grades
Understanding lumber grades helps in cost estimation. Select grade affects pricing, with clear grades commanding premium prices over construction grades.
Fractional Measurements
Enter fractional dimensions like "2 1/4" or "1.25". The calculator automatically converts fractions to decimals for accurate calculations.
Waste Calculation
Always include waste percentage in your calculations. Typical waste ranges from 10-20% depending on project complexity and cutting requirements.
Frequently Asked Questions
A board foot is a unit of measurement for lumber volume. One board foot equals a piece of wood 12 inches long, 12 inches wide, and 1 inch thick (144 cubic inches). The formula is: Board Feet = (Length × Width × Thickness) ÷ 144, where all dimensions are in inches.
Measure the actual dimensions of your lumber: length, width, and thickness. For nominal lumber (like 2×4), use the actual dimensions (1.5" × 3.5") for accurate calculations. Always measure in the same units before calculating.
Yes! You can enter fractions like "2 1/4", "3/4", or "1.75". The calculator automatically converts fractions to decimals. Common lumber thicknesses include 3/4", 1", 1 1/4", 1 1/2", and 2".
Waste percentage depends on your project complexity. Use 10% for simple projects, 15% for moderate complexity, and 20% for complex projects with many cuts. Always round up to ensure you have enough material.
Pricing estimates are based on your input price per board foot. Lumber prices vary by species, grade, supplier, and market conditions. Use current local pricing for the most accurate estimates. Premium species and higher grades cost significantly more.
Yes! Use the "Add Another Piece" button to calculate multiple lumber pieces with different dimensions. The calculator will provide individual and total board feet calculations for your entire project.