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Geometry

Triangle Calculator

Solve triangle problems from common sets of sides, angles, base, and height.

Preparing Triangle Calculator

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Input

Use common triangle inputs to find sides, angles, area, and perimeter. You will see the result first and the step-by-step solution below.

Input summary

Your calculator summary shows here.

Step by Step Calculation

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Step by step calculation shows here

Calculate first and the full working will appear below automatically.

How to use Triangle Calculator

Enter the values you know, tap Calculate to see the result first, then review the optional step-by-step solution below.

What this calculator is for

Use common triangle inputs to find sides, angles, area, and perimeter.

Tips

Use clean numbers and symbols so the solver reads them correctly.
For lists, separate numbers with commas, spaces, or new lines.
For matrices, put each row on a new line.

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