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.

Sum Basal Area Times Height (m3)

Required number input.

Total Basal Area Square Meters (m2)

Required number input.

Lorey's mean tree height, weighted by each tree's basal area, from aggregate basal-area-height and basal-area sums. 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]

Mean Height Meters (m)

The resulting mean height meters 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.

• Basal Area Single Tree

  Tree stem cross-sectional basal area at breast height in square metres from DBH in centimetres.

• Form Factor

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

• Dominant Height

  Mean height of a selected dominant-tree sample from summed heights and sample tree count.