Tree Height Calculator

Tree height can be estimated using the shadow proportion method (similar triangles): if you know your own height and shadow length, you can calculate the tree height from its shadow. Use this calculator for accurate, instant results.

The calculator uses the standard published formula for tree height. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, watts. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Tree height / Tree shadow = Your height / Your shadow. Each step in the calculation is shown so you can verify the result manually.