See how your savings grow when interest earns interest. Enter the principal, annual rate, time period and compounding frequency to get the compound interest and total amount – free, instant and private, with no sign-up needed.
How to Use
- Enter the principal – the amount of money you are saving or investing.
- Enter the annual interest rate and the time period in years.
- Choose how often the interest compounds, then click Calculate Compound Interest to see the total amount and interest earned.
Key Features
- Flexible compounding – yearly, half-yearly, quarterly or monthly.
- Full breakdown – total amount and interest earned side by side.
- Fractional years – works with periods like 2.5 years.
- 100% private – everything runs in your browser; nothing is sent anywhere.
FAQs
Is this compound interest calculator free?
Yes. It is completely free with no sign-up and no limits.
What is compound interest?
Compound interest is calculated on the principal plus any interest already earned, so your money grows faster over time compared with simple interest. Banks use it for savings accounts and loans.
Why does compounding frequency matter?
The more often interest compounds, the faster the balance grows, because each round of interest starts earning its own interest sooner.
Is my data stored anywhere?
No. The calculation runs entirely in your browser and nothing is transmitted or saved.
Related Tools
Simple Interest Calculator · EMI Calculator · Percentage Calculator