Tree age calculator
Estimate a tree's age from its trunk circumference.
How to use the tree age calculator
Estimate a tree's age from its trunk circumference. Enter the requested information above, review it for accuracy, and select Calculate.
Enter your details
Use complete and accurate values. Date fields support typing or calendar selection.
Calculate
The tool processes your entries locally in your browser.
Review the result
Read the result and supporting details, or use Reset to start again.
About this calculator
This free tool is designed to provide a quick, easy-to-understand result. The calculation runs on your device.
Frequently asked questions
Is this calculator free?
Yes. You can use it without an account or fee.
Are my entries stored?
The calculation runs in your browser. We do not intentionally collect calculator entries.
How accurate is the result?
Accuracy depends on the information entered, formula assumptions and rounding. Verify important decisions with an appropriate professional.