Compound Interest Calculator
Calculate how your investment grows with daily, weekly, monthly, quarterly, biannual or annual compounding.
Assumptions used in this calculation
- Compounding frequency: Choose the frequency that matches your investment, more frequent compounding produces a higher maturity value for the same stated annual rate.
About this calculator
Compound interest is what separates long-term wealth building from simple saving: unlike simple interest, each period's interest is added back to the principal, so future interest is earned on interest already credited, not just the original amount. Working this out by hand across dozens of compounding periods is tedious and error-prone, especially once you change the compounding frequency, since daily, monthly, quarterly and annual compounding all produce noticeably different maturity values from the same stated rate. This calculator applies the standard formula A = P × (1 + r/n)^(n×t) to your principal, annual rate, investment period and chosen compounding frequency, and returns the exact maturity value instantly. It's the same math used to evaluate fixed deposits, recurring investments, and any product that reinvests interest, so you can compare offers with different compounding schedules on equal footing rather than relying on a lender's advertised headline rate alone.
Worked example
₹1,00,000 at 8% for 10 years, annual compounding
Result: Maturity value ≈ ₹2,15,892
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