Lumber volume calculator
Estimate outputs: Linear length, Lumber volume. Adjust Number of pieces, Length, Board width to match your project.
Estimate outputs: Linear length, Lumber volume. Adjust Number of pieces, Length, Board width to match your project.
Inputs and units
Use the units shown beside each field. Replace the sample values with your measurements and the figures on the selected product packaging.
| Parameter | Example input |
|---|---|
| Number of pieces | 24 |
| Length | 4 m |
| Board width | 15 cm |
| Board thickness | 5 cm |
Formula and assumptions
Linear lengthNumber of pieces × Length
Lumber volumeLinear length × Board width / 100 × Board thickness / 100
ceil = round up; floor = round down; max = the greater value. Trigonometric angles are converted from degrees to radians.
Allowance is applied before rounding to whole packages. Whole units are rounded up; displayed decimals are rounded only for readability.
This is a preliminary geometry or quantity calculation, not a design check. Dimensions, spacing and performance requirements must come from your project.
Worked example
Sample values are examples, not product specifications. Run the calculation again with your own measurements.
| Result | Calculation |
|---|---|
| Linear length | 96 m |
| Lumber volume | 0.72 m³ |
Related calculators
Related tools use separate measurements. Check their inputs before transferring quantities.
These are quantity estimates. Confirm product coverage, site conditions and required dimensions before ordering.