Compound Interest Calculator
See how investments grow over time with compound interest. Supports periodic contributions.
How to use Compound Interest
- 1Enter principal
Starting amount, annual rate, years, and compounding frequency.
- 2Add contributions
Optionally add monthly or annual contributions to model recurring deposits.
- 3See growth
Final balance and total interest are shown.
Frequently asked questions
How often does interest compound?+
You choose — annually, semi-annually, quarterly, monthly, or daily. Daily is the most realistic for most savings accounts.
Is inflation factored in?+
No — values shown are nominal. For real returns, subtract your expected inflation rate from the input.
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