Right Triangle Calculator

Solve any right triangle using the Pythagorean theorem and trigonometry. Free online calculator with step-by-step solutions, SVG diagram, side-angle input, and full results.

Input Known Values(any 2, at least one side)
💡 Defaults: a=3, b=4 (3-4-5 triangle)
Solved Right TriangleAll sides & angles
Click "Solve" to see the calculation steps.
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Right Triangle Calculator

This free online right triangle calculator solves for all sides, angles, area, perimeter, and height using the Pythagorean theorem and trigonometric ratios. Works with side-side and side-angle inputs with step-by-step solutions.

🔒 Client-side only⚡ Web Worker processing🌐 Works offline🛡️ Zero server logs