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Calcimator

Tree Age Estimator

Estimate a tree's age from its diameter at breast height (DBH) and species growth factor without coring.

Inputs

inches

Results

Estimated Age

90 years

Age Range (low)77 years
Age Range (high)103 years
SpeciesOak
Growth Rate0.2 in/year
Circumference56.5 inches
Estimated Height55 ft
CO₂ Stored378 lbs
Historical ContextEstablished ~1936
How to Use This Calculator
  1. Enter the Diameter at Breast Height (DBH) in inches measured at 4.5 feet above ground.
  2. Select the Species to apply the correct growth factor for your tree type.
  3. Review Estimated Age and the Age Range (low/high) to account for growth rate variability.
  4. Check CO₂ Stored in pounds to quantify the individual tree's carbon contribution.
  5. Use Historical Context to relate the tree's age to significant events in the area's history.
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