How to use the leaf area index calculator
Compute leaf area index of a canopy. Enter total leaf area, ground area in the fields above; the leaf area index is computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- la — Total leaf area (m²)
- ga — Ground area (m²)
Worked example
With total leaf area = 45 m², ground area = 10 m², the calculator gives leaf area index ≈ 4.5.
Frequently asked questions
What is the formula for the leaf area index calculation?
Leaf area index = la / ga. Here la is total leaf area (m²), ga is ground area (m²).
What inputs do I need for the leaf area index calculator?
You need total leaf area in m², ground area in m². Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.