Tree basal area
Tree basal area: use stem diameter at the measurement height. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
Area = π(diameter/100)²/4
Variables & units
- Stem diameter at the measurement height
- cm · minimum 0, maximum 1000000000000
Worked example
Use the example inputs to explore this model; the solution shows each supplied quantity.
Assumptions
Circular stem cross-section; diameter must be measured at a consistent height.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
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