Volume Lumber / ft³ → in³
Convert Cubic feet to Cubic inches
Convert solid wood volume between board feet, cubic feet, and metric volume. Convert Cubic feet (ft³) to Cubic inches (in³). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Cubic inches to Cubic feet →
How to convert cubic feet to cubic inches
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 in³.
in³ = ft³ × 0.028316846592000004 ÷ 0.000016387064
Worked examples
10 ft³ ≈ 17280 in³
Step 1: (10 × 0.028316846592) ≈ 0.28316846592 m³.
Step 2: 0.28316846592 ÷ 0.000016387064 ≈ 17280 in³.20 ft³ ≈ 34560 in³
Step 1: (20 × 0.028316846592) ≈ 0.56633693184 m³.
Step 2: 0.56633693184 ÷ 0.000016387064 ≈ 34560 in³.
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 Cubic inches
Cubic inches (in³) measures volume lumber under the conventions above. The base value in m³ is (x × 0.000016387064), where x is the numerical value in in³. 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 cubic inches reference table
| Cubic feet (ft³) | Cubic inches (in³) |
|---|---|
| 1 | 1728 |
| 5 | 8640 |
| 10 | 17280 |
| 25 | 43200 |
| 50 | 86400 |
| 100 | 172800 |
| 1000 | 1728000 |
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