Timber list with solid cubic metres

Turn a log list into a timber list. The server calculates the volume of each log with the Huber formula from length and mid diameter and shows the calculation.

Input

Forest or stand: Mill Forest, stand 12 Date: 3 February 2026 Logs: id,species,length_m,diameter_cm H1,Spruce,4,32 H2,Spruce,4,28.5 H3,Spruce,5,24 H4,Pine,4.5,30 H5,Pine,,26 Notes: Logs stacked at the east track.

Result

A table of logs with the calculation for each one, the volume per log, the sums by species and in total, and a signature line.

A timber list has to be traceable. This tool calculates the solid volume of each log with the Huber formula, from its length and mid diameter, and shows the calculation in the row. It adds up by species and in total. Missing or unusually large values are listed. The values are used as entered, without bark deduction, grading or price.

Your texts, pages and images are processed on our own servers in the EU. Trust Center

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Who it is for

Forest owners, foresters, forestry contractors and small sawmills.

Typical uses

Add up a pile of logs before a sale.
Check a list from a contractor.
Keep species apart in one list.

Example

Input

Result

A table of logs with the calculation for each one, the volume per log, the sums by species and in total, and a signature line.

A fixed example, shortened. Real results are AI-generated: please check them.

Price and limits

Price: usually 1–3 credits
Available with: Free, With package
Input limit: One page with up to 20,000 characters of HTML

Privacy

Processed on our own servers in the EU (Poland). Inputs and results are deleted after 7 days (Free) or 30 days (packages), or right after you see the result if you choose not to store them. Images are deleted right after processing.

In the API

Tool name: timber_list. Create a job with POST /api/v1/jobs and fetch the result with GET /api/v1/jobs/{id}. You find your API key in your account.

curl -X POST https://do4u.eu/api/v1/jobs \
  -H "Authorization: Bearer d4u_…" -H "Content-Type: application/json" \
  -d '{"tool": "timber_list", "url": "https://example.com/"}'

Full API documentation →

Questions and answers

Who does the calculation?

The server calculates all sums from the table. The AI only writes the text and cannot change the figures.

Which formula is used?

The Huber formula: pi divided by four, times the mid diameter in metres squared, times the length in metres. Each row shows it with its own figures.

Is bark deducted?

No. The diameter is used as entered. A diameter measured over bark has to be reduced before it is entered, if that is agreed in the sale.

Is my text stored?

Only as long as needed: 7 days on Free, 30 days with a package – or not at all if you choose not to store it. Processing happens on our own servers in the EU (Poland).

Can I use the result right away?

Results are AI-generated. Please read them before you publish or send them.