Free Compound Interest Calculator — See Your Money Grow
Enter your starting amount, monthly contribution, return rate and years to see how compound interest grows your savings — no signup, instant chart.
Inputs
Why people use this calculator
- Future value, total contributions and interest earned
- Monthly contribution included
- Interactive chart showing growth over time
- Free for retirement, savings and investment planning
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OpenFrequently asked questions
›What return rate should I use?
7% real return is a common long-term average for diversified stock portfolios.
›How much does starting early matter?
Starting 10 years earlier can roughly double your ending balance due to compounding.
›Is this pre-tax?
Yes. Use tax-advantaged accounts when possible to keep more of the return.
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