Interest Calculator
Calculate simple and compound interest instantly. Enter principal, rate, and time to see how your money grows — works offline as a progressive web app.
Created by SafdarJamal
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How to Use
This tool calculates simple and compound interest to help you understand investment returns or loan costs. 1. Enter your principal amount (starting money) in the first input field 2. Input the interest rate as a percentage (e.g., enter "5" for 5%) 3. Specify the time period in years 4. Choose between Simple Interest or Compound Interest calculation type 5. For compound interest, select how often interest compounds (annually, monthly, etc.) 6. Click "Calculate" to see your results The calculator will display: - Total interest earned or owed - Final amount after the time period - Breakdown showing how your money grows Use your mouse to click input fields and buttons. You can type numbers directly into any field. Clear results by changing any input value and recalculating. The tool works offline once loaded, so you can use it without an internet connection.