Dendrochronology Calculator

Analyze tree ring data to determine age, growth rates, and calendar dates. Useful for dating wooden structures, artifacts, and climate reconstruction.

Use negative for BC (e.g., -500 for 500 BC)

Estimated Tree Age
0
years
Innermost Ring Year
--
Avg Ring Width
0
Growth Rate
0
Diameter at BH
0
Date Interpretation
--

Dendrochronology Formulas

Total Age = Ring Count + Missing Rings

Innermost Year = Outermost Year - Ring Count - Missing Rings + 1

Avg Ring Width = Radius / Ring Count

Dendrochronology provides one of the most precise dating methods available. Each ring represents one year of growth, and ring-width patterns can be matched to master chronologies extending thousands of years. The presence of bark edge confirms the exact felling date.

Related Calculators

Radiocarbon Dating

C-14 age calculation.

Stratigraphy

Layer age estimation.

Fossil Age

Multi-method dating.

Luminescence Dating

OSL/TL dating.

Obsidian Hydration

Obsidian rim dating.

Stable Isotope

Isotope analysis.