Tree Height Calculator (Shadow Method)
Tree Shadow (m)
Your Height (m)
Your Shadow (m)
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.
- 1Tree height / Tree shadow = Your height / Your shadow
- 2Tree height = Tree shadow × (Your height / Your shadow)
- 3Works on flat ground when shadows are clearly visible
- 4Also works using a measuring stick of known height
Tree shadow 18m, your height 1.80m, your shadow 0.60m=Tree height = 18 × (1.80/0.60) = 18 × 3 = 54 metres
| Species | Mature height |
|---|---|
| Apple tree | 4–8m |
| Silver birch | 15–25m |
| Oak | 20–40m |
| Scots pine | 20–35m |
| Giant sequoia | 50–85m |
References
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