What is compound interest?

Compound interest means your interest earns interest. Unlike simple interest (which only grows on the original principal), compound interest accelerates growth exponentially over time — making it the most powerful force in investing.

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Finance

Compound Interest Calculator

Grow $1,000 to $1M — see compound interest in action.

Inputs

Initial Investment$

Annual Interest Rate%

Time Period (Years)

Compounding Frequency

Monthly Contribution$

Live calculation — updates as you type

Result

Future Value

0.00$

Breakdown

Total Contributions

0.00$

Interest Earned

0.00$

Growth Multiple

All calculations run 100% locally in your browser. Nothing is sent to our servers.

Frequently Asked Questions

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