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Simple Interest Calculator

Calculate simple interest on a principal amount based on rate and time period.

Investment Details
Enter valid inputs to see the chart.

The Simple Interest Calculator helps you determine the interest earned or paid on a principal sum at a fixed annual rate over a specific period. It's a fundamental concept in finance, often used for short-term loans and investments.


💰 How It Works

To calculate simple interest, you need to provide:

  • Principal Amount (P): The initial sum of money invested or borrowed.
  • Annual Interest Rate (R%): The yearly percentage rate at which interest is calculated.
  • Time Period (T in Years): The duration for which the money is borrowed or invested, in years.

The calculator uses the standard formula for simple interest:

Simple Interest (SI) = (P × R × T) / 100

And the total amount payable or receivable is:

Total Amount = Principal + Simple Interest


📊 Key Outputs

  • Simple Interest Earned/Payable: The total interest amount calculated over the period.
  • Total Amount: The sum of the principal amount and the simple interest.

💡 Common Use Cases

  • Savings Accounts: Estimating interest on basic savings.
  • Fixed Deposits: Calculating returns on fixed-term investments where interest isn't compounded.
  • Short-term Loans: Determining interest on personal loans or advances.
  • Educational Purposes: Understanding the basics of interest calculations.
  • Comparing Investments: A quick way to compare potential returns from different simple interest-bearing options.

✨ Features

  • Clear input fields for principal, rate, and time (in years).
  • Instant calculation and display of simple interest and total amount.
  • User-friendly interface and responsive design.

This calculator provides a straightforward way to compute simple interest for various financial scenarios, helping you make informed decisions.

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