When to use this calculator
Find total solid timber volume from actual board dimensions and quantity. Use actual dimensions rather than nominal timber sizes.
Explore the material quantities calculators for other questions in this topic. For a related calculation, use the Topsoil Volume Calculator: Find uncompacted topsoil volume from garden area and desired depth.
PUTTING IT INTO PRACTICE
Timber Volume: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Board length (m) | 3 |
| Actual width (mm) | 100 |
| Actual thickness (mm) | 50 |
| Boards (integer) | 20 |
| Result | 0.3 m³ |
- Check the input labels and enter the example values above.
- Apply the relationship: Volume = length × width/1000 × thickness/1000 × count.
- The result is 0.3 m³, rounded for display.
How to interpret your result
Use actual dimensions rather than nominal timber sizes.
Calculate net geometric quantities first, then apply a project-specific allowance where appropriate. Coverage per bag or pack should come from the product label. Bulk density, trimming and compaction can substantially change order quantities.
Frequently asked questions
Does a geometric estimate include waste automatically?
Only when a waste or allowance input is provided. Otherwise add an appropriate allowance separately before ordering.
When is the timber volume calculator useful?
Find total solid timber volume from actual board dimensions and quantity. Use actual dimensions rather than nominal timber sizes.
How do I use the timber volume calculator?
Enter board length (m), actual width (mm), actual thickness (mm), boards (integer). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Volume = length × width/1000 × thickness/1000 × count.
What should I check before using the result?
Use actual dimensions rather than nominal timber sizes.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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