How do I measure the diameter-at-breast-height (DBH) for a tree?

The diameter-at-breast-height (DBH) of a tree’s trunk is measured 4.5 feet above the ground. To find the diameter of a tree, first measure the circumference as shown in the first image below. Then divide the circumference by 3.14. The result will equal the diameter of the tree. Refer to the second image below for reference of these terms.

Tree Measurement DBHTree Measurement Circumference 


In cases where trees have multiple trunks, use the image below for guidance on how to measure these trees.

Tree Measurement by Trunk Type


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1. What is a significant tree?
2. How do I measure the diameter-at-breast-height (DBH) for a tree?
3. What are the requirements for tree removal on single-family properties?
4. What are the tree removal standards for proposed subdivision or short subdivisions?
5. What are the tree removal standards for multi-family or non-residential properties?
6. Can I trim or remove trees within critical areas or its buffer?
7. Can I remove fallen trees from a stream since they may cause flooding?