Compound Interest Calculator Yearly



Compound interest is a powerful financial concept that allows you to earn interest not only on your initial investment but also on the interest accrued over time. To make these complex calculations easier, a Compound Interest Calculator comes in handy. In this article, we will provide you with a simple and efficient calculator built with HTML and JavaScript.

How to Use

  1. Enter the principal amount in the designated input field.
  2. Input the annual interest rate as a percentage.
  3. Specify the number of years you want to calculate compound interest for.
  4. Click the “Calculate” button to obtain the result.


The formula for calculating compound interest is given by:


  • is the total amount after interest.
  • is the principal amount.
  • is the annual interest rate.
  • is the time in years.


Let’s say you invest $1,000 at an annual interest rate of 5% for 3 years. Using the formula, the compound interest would be calculated as follows:


The compound interest would be the amount obtained by subtracting the principal from the total amount.


Q: Can I leave any input field blank?
A: No, all input fields must be filled for accurate calculations.

Q: What unit should I use for the principal amount and interest rate?
A: Use the same currency for the principal amount, and express the interest rate as a percentage.

Q: Why is the result not updating after clicking “Calculate”?
A: Ensure that all input values are numerical, and try again.


The Compound Interest Calculator provides a quick and precise way to determine the growth of your investment over time. Utilize this tool wisely for financial planning and decision-making.

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