Calculate compound interest, investment growth, interest earned, future value and wealth creation with different compounding frequencies.
Enter your principal amount, interest rate, investment period and compounding frequency.
The calculator computes interest on both your principal and accumulated interest over time.
See your final balance, interest earned and investment growth instantly.
Compound interest is the interest earned not only on your original investment (principal) but also on the interest accumulated over previous periods. This "interest on interest" effect helps investments grow faster over time, making compound interest one of the most powerful concepts in long-term wealth creation.
Each compounding period, you earn interest on both your principal amount and previously earned interest.
The longer your money remains invested, the greater the effect of compounding on your investment.
Steady Investment Growth
Accelerated Returns
Significant Wealth Creation
Maximum Compounding Effect
A = P × (1 + r / n)nt
Where A is the final amount, P is the principal amount, r is the annual interest rate, n is the number of compounding periods per year and t is the investment duration in years.
| Feature | Simple Interest | Compound Interest |
|---|---|---|
| Interest Calculation | Principal Only | Principal + Earned Interest |
| Growth Rate | Linear | Exponential |
| Best For | Short-Term Loans | Long-Term Investments |
| Returns | Lower | Higher Over Time |
| Frequency | Compounds Per Year | Typical Use |
|---|---|---|
| Annually | 1 | Long-Term Investments |
| Semi-Annually | 2 | Corporate Bonds |
| Quarterly | 4 | Fixed Deposits |
| Monthly | 12 | Savings & Investments |
| Daily | 365 | High-Yield Savings Accounts |
A Compound Interest Calculator helps estimate how your investments grow over time by earning interest on both the original principal and previously accumulated interest. It allows you to calculate your final investment value, total interest earned and overall investment growth based on your principal amount, annual interest rate, investment period and compounding frequency.
Whether you're planning for retirement, saving for your child's education, building an emergency fund or investing for long-term financial goals, this calculator helps you understand the true power of compound interest.
Suppose you invest ₹100,000 at an annual interest rate of 10% compounded monthly for 20 years.
This Compound Interest Calculator provides estimated results based on the information you enter. Actual investment returns may vary depending on market conditions, taxes, fees and other factors. The calculator is intended for educational and planning purposes only and should not be considered financial advice.
Compound interest is interest earned on both your original investment and the interest accumulated over previous periods.
Simple interest is calculated only on the principal amount, while compound interest is calculated on both the principal and accumulated interest.
Compounding frequency determines how often interest is added to your investment, such as annually, quarterly, monthly or daily.
Yes. More frequent compounding generally results in slightly higher returns because interest is calculated and added more often.
Yes. This calculator supports optional monthly contributions to help estimate long-term investment growth.
Yes. It is completely free and works on desktop, tablet and mobile devices.
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