Compound Interest Calculator

How to use the Compound Interest Calculator

1. Enter the principal (starting amount).
2. Enter the annual interest rate and the time period.
3. Select how often interest compounds if the option is available.
4. Press Calculate to see compound interest and the future value.

How it works

Compound interest adds interest to the principal so that later periods earn interest on a growing balance. The standard formula is A = P(1 + r/n)^(nt), where n is the number of compounding periods per year.

Useful for savings goals, investment estimates and comparing accounts with different compounding schedules.

Examples

• Principal 10,000 at 5% compounded annually for 3 years grows more than simple interest alone.
• More frequent compounding (e.g. monthly vs yearly) increases the final amount for the same nominal rate.
• Longer time periods amplify the effect of compounding.

Compound Interest Calculator FAQ

What does compounding frequency mean?

It is how often interest is added to the balance (yearly, quarterly, monthly, etc.). More frequent compounding generally yields a higher effective return.

Is this the same as EMI?

No. This tool projects growth of a deposit or investment. EMI calculates loan repayments.

Is the Compound Interest Calculator free?

Yes. It runs in your browser with no account.