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 Height Meters (m)

Required number input.

Ending Height Meters (m)

Required number input.

Elapsed Years (year)

Required number input.

Average annual tree-height change 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 Meters Per Year (m/year)

The resulting growth meters per year returned as a number.

• Annual and periodic increments depend on measurement interval, survivor versus ingrowth accounting, mortality and harvest, age basis, site, and volume equation. MAI and current annual increment serve different management 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.

• Diameter Growth Annual

  Average annual DBH change in centimetres 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.