Volume Lumber / ft³ → board ft
Convert Cubic feet to Board feet
Convert solid wood volume between board feet, cubic feet, and metric volume. Convert Cubic feet (ft³) to Board feet (board ft). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Board feet to Cubic feet →
How to convert cubic feet to board feet
A board foot is 1 square foot by 1 inch thick. Use actual dimensions for physical volume. Nominal lumber sizes, stacked cords, pallets, and ties need dimensions or packing assumptions and are excluded.
Use x for the value in ft³, b for the intermediate value in m³, and y for the result in board ft.
board ft = ft³ × 0.028316846592000004 ÷ 0.002359737216
Worked examples
10 ft³ ≈ 120 board ft
Step 1: (10 × 0.028316846592) ≈ 0.28316846592 m³.
Step 2: 0.28316846592 ÷ 0.002359737216 ≈ 120 board ft.20 ft³ ≈ 240 board ft
Step 1: (20 × 0.028316846592) ≈ 0.56633693184 m³.
Step 2: 0.56633693184 ÷ 0.002359737216 ≈ 240 board ft.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Cubic feet
Cubic feet (ft³) measures volume lumber under the conventions above. The base value in m³ is (x × 0.028316846592), where x is the numerical value in ft³. Factors shown here are rounded for display; calculations use the stored factor.
About Board feet
Board feet (board ft) measures volume lumber under the conventions above. The base value in m³ is (x × 0.002359737216), where x is the numerical value in board ft. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Keep these unit conventions consistent when using measurements in construction calculations.
Cubic feet to board feet reference table
| Cubic feet (ft³) | Board feet (board ft) |
|---|---|
| 1 | 12 |
| 5 | 60 |
| 10 | 120 |
| 25 | 300 |
| 50 | 600 |
| 100 | 1200 |
| 1000 | 12000 |
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