Tree diameter checker

Check the tree. Keep the context.

Choose a municipality and check a verified private-tree size rule where the ledger supports one. If the evidence cannot support a hard answer, the checker says so.

Municipality not listed? Browse all city guides.

Not sure how to measure the trunk?
See the DBH measurement guide →

Your result

Confidence: —Select a municipality to see the evidence level.

Choose a municipality and enter what you know.

The checker gives a firm size-rule result only when the ledger contains current, official and automation-safe evidence. The municipality makes the final decision.

Diameter is one check.

The tree and the site can add another requirement.

Use diameter, not circumference. Follow the city’s measuring height and multi-stem method.
Public or boundary tree? Resolve ownership before relying on a private-tree comparison.
Below the number? Replacement status, species, protected areas and development can still matter.