Tree Leaves Calculator
Estimate the number of leaves on a deciduous tree based on its crown dimensions and leaf density.
Formula
Leaves = (Crown Area × LAI × 144) ÷ Leaf Area (sq in)
- Leaf Area Index (LAI): sparse ≈ 2, medium ≈ 5, dense ≈ 8.
- Average leaf area assumed to be ~10 sq in (roughly palm-sized).
- Crown projected area = π × r²; r = crown diameter ÷ 2.
- This is an estimate — actual counts vary greatly by species.
20 ft crown, medium density
Inputs
- Crown Diameter: 20 ft
- Crown Height: 30 ft
- Leaf Density: medium
r=10 ft. Crown area = π×100 = 314 sq ft. LAI=5. Total leaf area = 314×5×144 = 226,080 sq in. Leaves = 226,080÷10 = 22,608.
Frequently asked questions
How many leaves does a typical oak tree have?
A mature oak has roughly 200,000–500,000 leaves, depending on size and species.
Is this calculation accurate?
It's an estimate based on LAI and average leaf area. Scientific counts require actual sampling.