Interest Calculator
Calculate simple or compound interest and see your final amount. Runs in your browser.
Estimate only, not financial advice. Actual returns depend on your specific product. Your inputs never leave your device.
Calculate simple or compound interest and see your final amount. Useful for loans, deposits, and savings planning.
How to use
- Choose simple or compound interest.
- Enter the starting amount, yearly rate, and time in years (and how often interest is added, for compound interest).
- Calculate to see the interest earned and the total maturity amount.
Frequently asked questions
What's the difference between simple and compound interest?
Simple interest is calculated only on the original principal. Compound interest is calculated on the principal plus previously earned interest, so it grows faster over time.
Does adding interest more often earn more?
Yes, adding interest more often (monthly vs yearly) earns slightly more, because the interest starts earning interest sooner. You can pick yearly, half-yearly, quarterly, or monthly.
Is this financial advice?
No, it's a calculation aid. Actual returns depend on your specific product and its terms.