Interest Per Year Calculator



Calculating interest per year is a crucial task in various financial scenarios, from investments to loans. To simplify this process, we’ll create a user-friendly interest per year calculator using HTML and JavaScript. This calculator will provide accurate results based on the formula for calculating interest.

How to Use

Using the Interest Per Year Calculator is straightforward. Input the principal amount, interest rate, and the number of years in the designated fields. Click the “Calculate” button, and the result will be displayed instantly.


The formula for calculating interest per year is:


  • is the initial amount of money.
  • is the interest rate per period.
  • is the number of periods.


Suppose you invest $10,000 at an annual interest rate of 5% for 3 years. Using the interest per year formula:

The calculated interest would be displayed as the result.


Q1: How do I input values in the calculator?
A1: Enter the principal amount, interest rate, and the number of years in their respective fields.

Q2: Is the interest rate in percentage form?
A2: Yes, the interest rate should be entered as a percentage.

Q3: What does the “Calculate” button do?
A3: Clicking the “Calculate” button triggers the JavaScript function to compute and display the interest.


This Interest Per Year Calculator provides a quick and accurate way to determine the interest earned or paid over a specified period. Whether you’re managing investments or planning loans, this tool simplifies complex calculations.

Leave a Comment