Volume Lumber / board ft → ft³
Convert Board feet to Cubic feet
Convert solid wood volume between board feet, cubic feet, and metric volume. Convert Board feet (board ft) to Cubic feet (ft³). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Cubic feet to Board feet →
How to convert board feet to cubic 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 board ft, b for the intermediate value in m³, and y for the result in ft³.
ft³ = board ft × 0.002359737216 ÷ 0.028316846592000004
Worked examples
10 board ft ≈ 0.833333333333 ft³
Step 1: (10 × 0.002359737216) ≈ 0.02359737216 m³.
Step 2: 0.02359737216 ÷ 0.028316846592 ≈ 0.833333333333 ft³.20 board ft ≈ 1.66666666667 ft³
Step 1: (20 × 0.002359737216) ≈ 0.04719474432 m³.
Step 2: 0.04719474432 ÷ 0.028316846592 ≈ 1.66666666667 ft³.
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 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.
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.
Definitions and sources
Keep these unit conventions consistent when using measurements in construction calculations.
Board feet to cubic feet reference table
| Board feet (board ft) | Cubic feet (ft³) |
|---|---|
| 1 | 0.0833333333333 |
| 5 | 0.416666666667 |
| 10 | 0.833333333333 |
| 25 | 2.08333333333 |
| 50 | 4.16666666667 |
| 100 | 8.33333333333 |
| 1000 | 83.3333333333 |
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