Compound Interest Calculator
See how your money grows with compound interest.
Calculator results are estimates for informational purposes only and should not be considered financial advice. Actual results may vary depending on lender terms, taxes, fees, rates, and other conditions.
What is the Compound Interest Calculator?
A compound interest calculator shows how savings or investments grow when interest is earned on both the principal and previously earned interest. Choose your compounding frequency to see the interest earned and the final amount over time.
Formula & how it works
A = P × (1 + r ÷ n)^(n × t)- P
- = principal
- r
- = annual rate (as a decimal)
- n
- = compounds per year
- t
- = time in years
Example
₹1,00,000 at 8% compounded annually for 5 years.
Inputs
- Principal
- ₹1,00,000
- Rate
- 8%
- Duration
- 5 years
- Compounding
- Annually
Results
- Interest earned
- ≈ ₹46,933
- Final amount
- ≈ ₹1,46,933
How to use this calculator
- 1Enter the principal amount.
- 2Enter the annual interest rate.
- 3Set the duration in years.
- 4Choose the compounding frequency and view the growth.
Frequently asked questions
What is compound interest?+
Compound interest is interest calculated on both the principal and the accumulated interest, so your money grows faster over time.
How does compounding frequency affect returns?+
More frequent compounding (e.g. monthly vs annually) results in slightly higher returns for the same rate.