Compound Interest Calculator
Grow savings with compounding: principal, rate, years, frequency → future value, table + chart.
How to use
Enter Principal ($), Annual rate (%), Years, Compounds per year and Monthly contribution ($) into Compound Interest Calculator and press Run — or just type, live results update as you edit. MoneyMetric computes the answer instantly with a pure JavaScript engine (Web Worker for heavy inputs) on this page (FV = P(1+r/n)^(nt)). Nothing is sent anywhere: no signup, no server round-trip, same inputs always give same outputs.
Steps
- Open the tool below (or scroll to the interactive Compound Interest Calculator).
- Enter Principal ($), Annual rate (%), Years, Compounds per year and Monthly contribution ($).
- Press Run (Ctrl+Enter) — or keep typing for live results.
- Copy the answer, download it, or share the link.
FAQ
Is Compound Interest Calculator really free?
Yes — free with no signup, no credits and no limits on this tool. It is supported by clearly labeled ads placed away from the buttons, never by paywalls.
Is anything I type into Compound Interest Calculator sent to a server?
No. Every keystroke is computed with a pure JavaScript engine (Web Worker for heavy inputs) inside this page. Close the tab and your data is gone — unless you explicitly download or share it.
What should I enter in "Principal ($)"?
Put your principal ($) here — for example: 10000. Leave the defaults first to see how it works, then adjust. Every field is validated with a plain-language message if something is off.
I normally use Calculator.net — why switch?
If you are tired of ad-heavy pages that show a number with no explanation of where it came from, MoneyMetric is the alternative: every result arrives with its formula, tables and charts — and your figures never leave your device.
How accurate is Compound Interest Calculator?
Results are educational, not professional financial advice — confirm big decisions with a qualified advisor.
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Free alternative
Free alternative to Calculator.net and Bankrate for calculators for loans, mortgages and investing — every result arrives with its formula, tables and charts — and your figures never leave your device. Calculator.net vs Bankrate vs MoneyMetric.
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