FinCalc KO

Compound Interest Calculator

Enter your initial capital, monthly contribution, annual return, and time horizon to see your final balance and total earnings. Compounded monthly.

Final balance โ€”
Total contributed โ€”
Total earnings (interest) โ€”
Total contributed 0%  ยท  Total earnings (interest) 0%

* Simple monthly-compounding estimate; taxes and fees are not included.

How to use

  1. Enter your initial investment.
  2. Enter how much you add each month.
  3. Enter the expected annual return and years.
  4. See your final balance grown by compounding.

Loan ยท Currency

Frequently asked questions

Are the results accurate?

We use standard financial formulas and official rates, but results are for reference only. Confirm important decisions with a professional.

Is my input data stored?

No. All calculations run only in your browser โ€” nothing is sent to or stored on our servers.

Is it free to use?

Yes, completely free, with no sign-up or login required.