See how your investments grow over time with compound interest. Enter a starting amount, monthly contributions, an expected return, and a time horizon to project your balance — and adjust for inflation to see it in today's money. No signup required.
Your investment
Change any number — nothing is saved
After 10 years · 49% total return
Investment Growth
How your money compounds year by year
Your breakdown
Key numbers behind the projection
Final value
Total invested
Total gain
Return multiple
After 10 years · 49% total return
Investment Growth
How your money compounds year by year
Your investment
Change any number — nothing is saved
Your breakdown
Key numbers behind the projection
Final value
Total invested
Total gain
Return multiple
This calculator shows how an investment grows over time with compound interest — the effect of earning returns on both your original money and the returns it has already generated.
Enter your starting amount, a monthly contribution, an expected annual return, and a time horizon to see your projected balance, how much of it is contributions versus growth, and — if you turn on the inflation toggle — what the result is worth in today's money.
The questions people usually run next — all free, no signup.