Compound interest calculator: what your savings grow to

Enter what you have now, what you'll add each month, the yearly return and how many years. See the final balance, how much of it you put in and how much is growth, year by year, and in today's dollars if you enter inflation.

✓ TestedMonth by month; checked against the closed-form formula and an independent calculation

Balance at the end–

Year	Put in so far	Growth so far	Balance

How it works

The yearly return is turned into its monthly equivalent, so 12 months of growth equal exactly one year's return. Each month the balance grows and then that month's amount is added. If you enter a yearly increase, the monthly amount rises at the start of each new year. Today's dollars divide the final balance by inflation compounded over the years. The result was checked against the closed-form future-value formula.