Simple and Compound Interest Calculator | Easy calculator | How to calculate interest money | Chitti Lekkalu

Simple & Compound Interest Calculators

Use our free and easy-to-use calculators to find out how much interest you can earn on your investments or how much you might pay on a loan.

Simple Interest Calculator

Compound Interest Calculator


Formulas

Simple Interest Formula

Simple interest is calculated only on the principal amount. The formula is:

Where:

  • I = Simple Interest

  • P = Principal Amount

  • R = Annual Interest Rate (as a decimal)

  • T = Time in years

The total amount is the principal plus the interest: .

Compound Interest Formula

Compound interest is calculated on the principal amount and the accumulated interest from previous periods. The formula is:

Where:

  • A = The future value of the investment/loan, including interest

  • P = Principal amount

  • R = Annual interest rate (as a decimal)

  • n = Number of times that interest is compounded per year

  • t = Time the money is invested for in years

The interest earned is the total amount minus the principal: .


How to Use the Calculator

  1. Select Calculator: Click on either the "Simple Interest" or "Compound Interest" tab to choose the calculator you want to use.

  2. Enter Your Details: Fill in the required fields:

    • Principal Amount: The initial money you're investing or borrowing.

    • Annual Interest Rate: The percentage rate per year.

    • Time Period: The duration of the investment. You can choose to enter this in Days, Weeks, Months, or Years.

    • Compounding Frequency (for Compound Interest): Select how often the interest is compounded (e.g., Monthly, Annually).

  3. Calculate: Click the "Calculate" button.

  4. View Results: The calculator will display the Interest Earned and the Total Amount in a clear results box below the button.


Example Calculation



Simple Interest Example

Let's calculate the simple interest for a principal of ₹10,000 at a 5% annual interest rate for 3 years.

  • Principal (): ₹10,000

  • Rate (): 5% or 0.05

  • Time (): 3 years

Formula:

Total Amount:

After 3 years, the simple interest earned will be ₹1,500, and the total amount will be ₹11,500.

Related Searches and Tags:

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