Tree Age Calculator
Estimate the age of a living tree without cutting it down by multiplying its DBH by its species growth factor.
Input Parameters
Enter details for calculation.
Estimated Tree Age
Expert Tip
This method provides a general estimate. Factors like local soil quality, crowding, and water availability can cause actual growth rates to deviate.
Calculation Methodology & Details
Formula
The growth factor represents the average number of years a tree takes to grow one inch in diameter (DBH) under typical forest conditions.
Important Disclaimer
The calculations provided are for educational and general planning guidelines only. They do not replace professional forestry or anatomical analysis or certified advice.
How to Estimate Tree Age
Steps to approximate a tree's age:
Determine DBH
Measure the tree's circumference at breast height (4.5 ft above ground) and convert it to DBH (Circumference / ฯ).
Select Tree Species
Select the tree species from the list to load its standard allometric growth factor.
Calculate Age
Multiply the diameter in inches by the factor to estimate age in years.