Compound Interest Growth Tool

Grow any investment with compound interest — see future value, interest earned, and year-by-year growth.

Initial investment ($):

Annual interest rate (%):

Years:

Compounds per year:

Monthly contribution ($):

How to use

Enter principal, rate, years, and compounding frequency, then click Calculate. Everything runs in your browser.

How often should I pick for compounding?

Monthly compounding is typical for savings accounts; many investments compound annually. More frequent compounding gives slightly higher returns.

Does it include regular contributions?

Yes — add a monthly contribution to see how steady investing accelerates growth.

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