Compound Interest Calculator
Estimate how your investments can grow over time. The calculation runs in your browser; Finance Atlas does not store the financial values you enter.
Enter Your Investment Details
Your projected investment value
How this calculator works
The calculator uses monthly compounding to estimate how an initial balance and recurring contributions can grow at the annual return you enter. It is a planning estimate, not a prediction of future market returns.
Frequently Asked Questions
What is a compound interest calculator?
It estimates how money can grow when returns are added to the balance and can themselves generate future returns.
How accurate is the estimate?
The math follows your inputs, but real investments do not earn a fixed return every month. Fees, taxes, market volatility, and changing contributions affect actual results.
Can I use it for retirement planning?
Yes, as a starting point. Testing several return assumptions and contribution levels is usually more useful than relying on a single scenario.