Compound Interest Calculator
Calculate compound interest with growth chart
How to Use Compound Interest Calculator
- 1
Enter the principal amount, annual interest rate, compounding frequency, and time period.
- 2
The tool calculates the final amount and the total interest earned.
- 3
Adjust the compounding frequency (monthly, quarterly, annually) to see how it affects the result.
About Compound Interest Calculator
Calculate compound interest with different compounding frequencies. See year-by-year growth chart. Free.
Best Use Cases
- •Calculating how much a fixed deposit will grow over 5 years with quarterly compounding
- •Comparing daily vs monthly vs yearly compounding on the same principal
- •Estimating long-term savings growth for retirement planning
- •Teaching students the difference between simple and compound interest
- •Projecting investment returns at various interest rates and time horizons
Examples
Fixed deposit
Enter 1,00,000 principal, 7% rate, quarterly compounding, 5 years. See total interest earned.
Compounding comparison
Keep principal and rate the same, switch between monthly and yearly to see the difference.
Long-term growth
Enter 10,000 at 10% compounded annually for 30 years to see the power of compounding.
Common Mistakes to Avoid
- !Entering the monthly rate instead of the annual rate in the rate field
- !Confusing compounding frequency with payment frequency
- !Expecting exact bank results without accounting for rounding differences
Limitations
- –Does not account for taxes on interest income
- –Assumes a constant interest rate for the entire period
- –Cannot model additional periodic contributions alongside compounding
Disclaimer
This tool is for informational and educational purposes only. Results are estimates and should not be treated as financial, tax, legal, or investment advice. Always consult a qualified professional before making financial decisions.
Frequently Asked Questions
What is compound interest?
Compound interest earns interest on both principal and accumulated interest. It grows exponentially - the key to wealth building.