Lumber Cubic Metre and Linear Length Calculator

Formula

Number of pieces × Length × Board width/100 × Board thickness/100

Planning estimate. Check product specifications and local requirements before purchasing.

Worked example: Lumber Volume Calculator

Measurements in this example

Number of pieces24
Length4 m
Board width15 cm
Board thickness5 cm

Calculated quantities

Total length96 m
Lumber volume0.72 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.

Project sheet

Saved in this browser. Each entry keeps its own measurements. Quantities from different jobs are not added together.

Your sheet is empty. Save a calculation to keep it here.

The project sheet stays on this device. Clearing browser data removes it.