Tree Age Estimator
Estimate a tree's age from its circumference and species growth rate.
Quick answer: enter your details below and click Estimate Tree Age — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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How to use
- Enter your values in the fields provided.
- Click Estimate Tree Age.
- Read the result and adjust an input if you want a different outcome.
About this tool
A tree's girth grows year by year, so circumference gives a rough age if you know the species' growth pace. Enter circumference and species and this tool divides one by the other. This is a rough estimate only: soil, climate, and competition change real growth rates.
Frequently asked questions
What do I enter to get a result?
Fill in every field with your own numbers or choices, then run the tool. Empty number fields count as zero, so check them before you trust the output.
Can I reuse this result elsewhere?
Yes. The result is calculated in your browser from the values you entered, so you can copy the numbers into your own notes or plan.