Compound Interest Calculator
See how your savings grow with compound interest — yearly, monthly, daily compounding with contributions included.
How to use the free online compound interest calculator
- Enter the initial amount, annual rate and years.
- Set how often interest compounds.
- Add an optional monthly contribution.
- See the future value, a growth chart and yearly breakdown.
About this tool
Project the future value of savings or investments with daily, monthly, quarterly or yearly compounding. Enter principal, rate, term and optional monthly contributions to see how interest on interest multiplies your money — plus a year-by-year growth table. Try different rates to see the power of compounding, then read our guide to understand the math.
Key features
- Any compounding frequency
- Monthly contributions
- Growth chart
- Year-by-year table
Privacy first: every calculation and generation runs 100% locally in your web browser using the Web Crypto API. Your input never touches a server — nothing is stored, logged or sold.
Read the guide
Compound interest, explained simply
How 'interest on interest' quietly grows your savings — and how compounding frequency matters.
Loan amortization explained: how your EMI is really calculated
Why early payments are mostly interest, how banks compute your EMI, and the prepayment shortcut that saves thousands.
Frequently asked questions
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