Compound Interest Calculator

Calculate how your investment will grow over time with different compounding frequencies. Perfect for financial planning and investment analysis.

Investment Results

Principal Amount: ₹0.00
Interest Earned: ₹0.00
Total Amount: ₹0.00
Effective Annual Rate: 0.00%
Calculation History
Track your recent compound interest calculations
Visual Growth Chart
See your investment growth visually with charts
Multiple Scenarios
Compare different investment scenarios
Export to Excel
Download your calculation results as Excel file

Investment Growth Visualization

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Year-by-Year Growth Breakdown

Year Principal Interest Total Amount Cumulative Interest

Investment Planning

Calculate long-term investment growth for mutual funds, stocks, or bonds. Plan your financial future with accurate compound interest projections to maximize returns over decades.

Savings Growth

Calculate how your savings account, fixed deposits, or recurring deposits will grow over time with different compounding frequencies. Compare bank offers effectively.

Retirement Planning

Plan your retirement savings and see how compound interest can significantly grow your retirement fund over decades. Calculate required monthly contributions for your retirement goals.

How to Use the Compound Interest Calculator

  • Select Currency: Choose your preferred currency from the dropdown menu. The calculator supports multiple currencies including INR, USD, EUR, GBP, and more.
  • Enter Principal Amount: Input your initial investment amount in your selected currency. This is the starting amount before any interest is earned.
  • Set Annual Interest Rate: Enter the expected annual interest rate as a percentage. This should be the nominal annual rate before compounding.
  • Choose Time Period: Select the number of years for your investment to grow. Compound interest works best over longer periods.
  • Select Compounding Frequency: Choose how often interest is compounded (daily, monthly, quarterly, etc.). More frequent compounding yields higher returns.
  • Calculate: Click "Calculate" to see your investment growth and detailed year-by-year breakdown in your selected currency.
  • Export to Excel: Use the "Export to Excel" button to download your calculation as a CSV file for offline analysis.
  • Reset: Use "Reset" button to clear all fields and start a new calculation.

Frequently Asked Questions

What currencies does the calculator support?
Our calculator supports multiple currencies including Indian Rupee (INR), US Dollar (USD), Euro (EUR), British Pound (GBP), Canadian Dollar (CAD), Australian Dollar (AUD), Japanese Yen (JPY), Chinese Yuan (CNY), Swiss Franc (CHF), Singapore Dollar (SGD), UAE Dirham (AED), Saudi Riyal (SAR), Malaysian Ringgit (MYR), and Thai Baht (THB). You can select your preferred currency from the dropdown menu.
What is compound interest and how does it work?
Compound interest is interest calculated on the initial principal and also on the accumulated interest of previous periods. It's often called "interest on interest" and can significantly grow your investment over time.
How does compounding frequency affect my returns?
The more frequently interest is compounded, the higher your total returns will be. Daily compounding yields slightly more than monthly, which yields more than annual compounding.
What is the difference between nominal and effective annual rate?
The nominal rate is the stated annual interest rate without considering compounding frequency. The effective annual rate (EAR) accounts for compounding frequency and shows the actual annual return you'll earn.
Do you store any of my financial data?
No, we don't store any of your financial data. All calculations happen locally in your browser, ensuring complete privacy and security for your financial information.
What's the Rule of 72 and how does it relate to compound interest?
The Rule of 72 is a simple formula to estimate how long it takes for an investment to double at a given annual rate of return: Years to double = 72 / Interest Rate.
How does inflation affect compound interest calculations?
Inflation reduces the purchasing power of money over time, which affects the real return on investments. When calculating compound interest for long-term planning, consider the real rate of return.
Can I calculate compound interest for regular contributions?
This calculator focuses on lump-sum investments. For regular contributions (systematic investment plans or SIPs), you would need a future value of annuity calculator.
What's the difference between compound interest and simple interest?
Simple interest calculates interest only on the principal amount. Compound interest calculates interest on both the principal and accumulated interest.
Is there a limit to how many calculations I can perform?
No, there are no limits to how many calculations you can perform. Our compound interest calculator is completely free to use with unlimited calculations.

Understanding Compound Interest: The Eighth Wonder of the World

Albert Einstein famously called compound interest "the eighth wonder of the world" and said, "He who understands it, earns it; he who doesn't, pays it." This powerful financial concept allows investments to grow exponentially over time.

Exponential Growth Potential

Compound interest creates exponential rather than linear growth. Small differences in interest rates or compounding frequencies can lead to dramatically different outcomes over decades.

Time is Your Greatest Asset

The most critical factor in compound interest is time. Starting early allows more compounding periods, dramatically increasing final returns.

Multi-Currency Support

Our calculator supports 14+ currencies, making it perfect for international investors, expatriates, and global financial planning across different economic regions.

The Mathematical Foundation of Compound Interest

The compound interest formula is A = P(1 + r/n)^(nt), where A is the final amount, P is principal, r is annual interest rate, n is compounding frequency, and t is time in years. This mathematical formula powers retirement accounts, education funds, and long-term investment strategies worldwide.

Financial institutions use this same formula to calculate returns on savings accounts, fixed deposits, bonds, and other interest-bearing instruments.

Practical Applications in Financial Planning

Compound interest calculations are essential for various real-world financial planning scenarios. Retirement planning requires projecting how current savings will grow over decades. Education planning involves calculating how much to save monthly for future college expenses.

Financial advisors use compound interest calculations to demonstrate the importance of starting early, the impact of regular contributions, and the benefits of tax-advantaged accounts.

Multi-Currency Investment Analysis

With support for 14+ currencies, our calculator enables investors to analyze investments across different currencies and economic environments. This is particularly useful for:

  • International Investors: Calculate returns in your home currency while investing in foreign markets
  • Expatriates: Plan savings and investments in both home and host country currencies
  • Global Businesses: Analyze investment returns across different operational currencies
  • Currency Hedging: Understand investment growth in multiple currency scenarios
  • Comparative Analysis: Compare investment opportunities across different currency zones

The multi-currency feature makes our compound interest calculator a truly global financial planning tool, suitable for individuals and businesses operating in the international financial landscape.