Tree Diameter Calculator
Free calculate tree diameter at breast height (dbh) using circumference, age, or growth formulas. Get instant, accurate results with our easy-to-use calculator.
Diameter Calculation
Diameter Results
Enter tree measurements to calculate diameter
Tree Diameter Measurement Guide
DBH Measurement
- • Measure at 4.5 feet (1.37m) height
- • Use diameter tape or caliper
- • Measure from uphill side
- • Avoid bulges and branches
- • Standard forestry measurement
Circumference Method
- • Most accurate direct method
- • Use flexible measuring tape
- • Formula: DBH = C/π
- • Accounts for tree shape
- • Standard forestry practice
Growth Estimation
- • Based on species growth rates
- • Considers environmental factors
- • Less accurate than direct measurement
- • Useful for planning purposes
- • Varies by location and conditions
Species Growth Characteristics
| Species | Growth Rate | Max DBH | Typical Shape |
|---|---|---|---|
| Oak | Slow-Medium | 24-48 inches | Broad, spreading |
| Pine | Medium-Fast | 18-36 inches | Straight, conical |
| Maple | Medium | 20-40 inches | Round, symmetrical |
| Cedar | Slow | 12-24 inches | Columnar, narrow |