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Right Triangle Solver — Free Online Tool

All sides and angles from any 2 inputs

Solve any right triangle from 2 given values. Computes all sides, angles, area, perimeter. SOH-CAH-TOA.

Enter any 2 of the 5 values below (c = hypotenuse, A + B = 90°)

Enter any 2 values
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Right triangle solver

Solve any right triangle from 2 given values. SOH-CAH-TOA + Pythagorean theorem.

How to use this tool

  1. 1

    Enter any 2 inputs

    Two sides, or one side and one acute angle.

  2. 2

    See all 6 values

    Sides a, b, c plus angles A, B, C (C is always 90°).

  3. 3

    See area + perimeter

    Automatically computed.

Frequently Asked Questions

SOH-CAH-TOA
Sine = Opposite/Hypotenuse. Cosine = Adjacent/Hypotenuse. Tangent = Opposite/Adjacent.
Naming convention
c is hypotenuse (opposite the 90° angle). a is opposite angle A. b is opposite angle B. A + B = 90°.

Key Takeaways

  • Right Triangle Solver is a free, browser-based calculator tool — all sides and angles from any 2 inputs.
  • No signup, no downloads, no file uploads — your data stays on your device.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Right Triangle Solver

  1. Open the tool: Launch Right Triangle Solver on Toololis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Right Triangle Solver — Quick Facts

Price
Free — no limits, no watermarks, no paywalls
Privacy
100% browser-based — no data is sent to any server
Platform
Any modern browser on desktop, tablet, or mobile
Category
Calculator Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
FeatureDetails
ToolRight Triangle Solver
CategoryCalculator
Signup RequiredNo
File UploadNone — processed in browser
Mobile SupportFully responsive
CostFree forever

Why Use Right Triangle Solver?

You should try Right Triangle Solver for a quick, private way to all sides and angles from any 2 inputs. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.