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.

Stem Volume Cubic Meters (m3)

Required number input.

Basic Density Kg Per Cubic Meter (kg/m3)

Required number input.

Expansion Factor

Required number input.

Dry aboveground tree biomass from measured stem volume, basic wood density and an explicit biomass expansion factor. 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]

Biomass Kilograms (kg)

The resulting biomass kilograms 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.

• Biomass Expansion Factor

  Ratio of measured total aboveground dry biomass to inventoried stem dry biomass.

• Form Factor

  Tree stem form factor: measured stem volume divided by basal area times tree height.

• Carbon Stock Single Tree

  Tree carbon mass from dry biomass and user-supplied carbon mass fraction.