Lumber Cubic Metre and Linear Length Calculator
Calculate total linear length and solid timber volume from piece count, length, width and thickness.

Formula
Planning estimate. Check product specifications and local requirements before purchasing.
Worked example: Lumber Volume Calculator
Measurements in this example
| Number of pieces | 24 |
|---|---|
| Length | 4 m |
| Board width | 15 cm |
| Board thickness | 5 cm |
Calculated quantities
| Total length | 96 m |
|---|---|
| Lumber volume | 0.72 m³ |
What to check
This calculation uses: Number of pieces, Length, Board width, Board thickness. It returns: Total length, Lumber volume.
List every wall or repeated timber size separately. Do not combine pieces with different lengths or cross sections.
Use nominal and actual timber dimensions consistently. Preservative treatment, moisture content and grading can affect what can be ordered.
Use the units beside each field. The values in the worked example are starting inputs; replace them with your measurements and the specifications of your material.
Compare alternatives
Open a tool, enter your measured dimensions, then save an estimate. Keep another version if you want to compare products or allowances.