30-60-90 & 45-45-90 triangle calculator
Solve special right triangles from any one known side using the standard side ratios.
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Tool guide
30-60-90 & 45-45-90 triangle calculator: how it works
Practical information to understand the result and use this tool correctly.
About 30-60-90 & 45-45-90 triangle calculator
45-45-90: legs equal, hyp = leg·√2.
30-60-90: x : x√3 : 2x.
Enter one side; the rest are filled.
How to use it
- 1Pick triangle type.
- 2Select known side.
- 3Enter length and calculate.
Frequently asked questions
- Only right triangles?
- Yes — the two classical special right triangles.