Compound Interest Calculator
Runs locallySee how your money grows with compound interest — contributions, compounding frequency and a yearly chart. Free and private.
Added at the end of each compounding period; 0 to disable.
Final balance
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Total deposits
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Interest earned
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| Year | Deposits | Interest | Balance |
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Project the future value of a principal sum with optional recurring contributions at any compounding frequency. A yearly breakdown table and growth chart show deposits vs. interest over time — all computed locally.
Frequently asked questions
What compounding frequencies can I use?
Annually, semiannually, quarterly, monthly or daily. At the same nominal rate, more frequent compounding earns slightly more.
Can I include regular contributions?
Yes — add a contribution per period to model monthly investing. The yearly table and chart separate deposits from interest, so you can watch compounding pull away.
Is my financial data uploaded?
No. Everything is computed locally in your browser.