Calculate a tree's age based on its ring count or birth year
Learn how to use the Tree Age Calculator and understand tree aging methods
There are two primary methods for determining a tree's age:
Tree ring counting is a precise method used by scientists to determine a tree's age. Each year, a tree forms a new ring of wood. The number of visible rings from the center to the outer edge of a cross-section typically equals the tree's age in years. Some trees may have fewer rings in certain years due to environmental conditions.
If you know when the tree was planted or began growing, you can calculate its age by subtracting its birth year from the current year. This method provides a straightforward estimate of the tree's age based on its planting date.
Some of the world's oldest trees include:
Tree age is an important factor in understanding forest ecology, as it provides insights into environmental history and forest development over time.