Simple Interest Calculator

Calculate simple interest quickly. Find out how much interest you will earn on a deposit, or how much interest you will owe on a loan where interest does not compound.

Simple Interest Calculator

How to Use

  1. 1

    Principal & Rate

    Enter your starting principal amount and the annual interest rate.

  2. 2

    Set Time

    Input the duration and choose the unit (years, months, or days).

  3. 3

    Calculate

    Click calculate to see your total interest and the final balance.

Frequently Asked Questions

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