Area and perimeter

Calculate area and perimeter for rectangle, circle, and right triangle.

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Overview

Area measures covered surface and perimeter measures boundary length.

Choose the geometric shape and provide values to calculate automatically.

Example

Retângulo 10 x 5
Área: 50
Perímetro: 30

FAQ

What is this tool for?

It runs fully in your browser: useful to validate, format, or convert data in everyday development.

Are my inputs sent to a server?

Processing happens locally with JavaScript. We do not store what you paste into the text areas.

Can I use this for real production data?

Use at your own risk. For secrets (passwords, tokens), prefer controlled environments and your company policies. And always review the generated contents. Never trust blindly things you see on the internet.