Use this forestry calculation to summarize a measured tree, plot, canopy, fuel, biomass, carbon, growth, density, or wood-volume quantity under a stated inventory convention.

Starting Dbh Centimeters (cm)

Required number input.

Ending Dbh Centimeters (cm)

Required number input.

Elapsed Years (year)

Required number input.

Average annual DBH change in centimetres between two measurements. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Growth Centimeters Per Year (cm/year)

The resulting growth centimeters per year returned as a number.

• Inventory summaries depend on breast-height definition, inclusion threshold, plot design, bark treatment, slope correction, damaged stems, measurement error, and expansion weights. Arithmetic and basal-area-weighted means answer different questions.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Use locally validated equations and inventory protocols, retain species and measurement metadata, aggregate with appropriate plot expansion and sampling weights, and report uncertainty with stand-level results.

• Height Growth Annual

  Average annual tree-height change between two measurements.

• Basal Area Growth Annual

  Average annual stand basal-area change in square metres per hectare.

• Periodic Annual Increment

  Average annual volume increment between two inventory dates.