Simple interest

Calculate simple interest and total amount with principal, rate, and period.

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Overview

Simple interest always applies to the initial principal amount. Formula: I = P x r x n, where P is principal, r is rate, and n is number of periods.

Use this tool for quick financial simulations and study.

Example

Principal: 1000
Taxa: 2% ao período
Períodos: 12
Juros: 240
Montante: 1240

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.