Tree Volume Calculator

Our professional tree volume calculator uses industry-standard allometric equations to estimate tree volume, biomass, and carbon content based on DBH (Diameter at Breast Height) measurements. Perfect for forestry planning, carbon sequestration projects, and environmental assessments.

How to Use

  1. Measure the tree's DBH (Diameter at Breast Height) in inches
  2. Use the slider to input the DBH measurement
  3. View the calculated volume, biomass, and carbon content
  4. Explore the relationship between DBH and tree metrics in the charts below

Hardwood Tree Volume Calculator

Volume Distribution by DBH

Tree Height by DBH

About the Model

This calculator uses allometric equations to estimate tree volume based on DBH (Diameter at Breast Height).

Height estimation: Uses a polynomial model H = 20.0 + 0.4167×DBH + 0.0347×DBH² calibrated to match observed data points (12"→30', 24"→50', 36"→80', 48"→120').

Volume calculation: First converts DBH from inches to cm, calculates biomass in kg using equation M = 0.1964 × (DBH)^2.53, then converts to cubic yards.

Branch ratio: Uses a sigmoid function that increases from 15% for small trees to 35% for large mature trees.

Carbon content: Estimated as 50% of total volume (approximate).

CO₂ equivalent: Carbon × 3.67 (molecular weight ratio).