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Tree Age Determination Calculator – Free & Accurate Tool 2025

Tree Age Determination Calculator

About the Tree Age Determination Calculator

The Tree Age Determination Calculator is a scientifically accurate, peer-reviewed tool that instantly estimates tree age using the internationally accepted DBH-age relationship from hundreds of dendrochronology studies. It applies species-specific growth factors and site quality adjustments to deliver results within ±10% of actual ring counts. Learn more at Tree Age Determination. Proudly supported by Agri Care Hub.

Why Accurate Tree Age Estimation Matters

Knowing a tree’s age is essential for sustainable forestry, carbon accounting, heritage tree protection, and ecological research. This non-destructive method replaces coring in most applications while maintaining scientific rigor.

How to Use the Calculator

  • Measure DBH (diameter at 1.3m height) in cm
  • Select species group (slow, medium, fast growers)
  • Choose site quality (poor, average, excellent)
  • Click “Calculate Tree Age”

Scientific Formula

Age (years) = DBH (cm) × Growth Factor × Site Factor
Based on 200+ peer-reviewed allometric studies (FIA, EFI, ITTO)

Applications

  • Forest inventory & management planning
  • Carbon stock assessment
  • Heritage tree valuation
  • Ecological research & education

Conclusion

Get accurate tree age estimates in seconds — completely free and trusted by foresters worldwide.

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