💰 Millionaire Calculator
Becoming a millionaire is a math problem: yearly savings plus compound growth. This calculator solves for the number of years until your balance crosses $1,000,000, given what you save each year, your expected return and what you have already.
It also splits the final million into money you put in versus interest earned — the part compounding does for free. Raise the return or the yearly savings and watch the timeline shrink.
How to use this calculator
Enter your yearly savings, expected return and current savings to find your timeline to $1 million.
- Enter the Saved per year amount.
- Type the Expected annual return as a percentage.
- Enter what you have Already saved, if anything.
- Press Calculate to see the years to $1 million and the interest breakdown.
Frequently asked questions
How long does it take to save a million dollars?
It depends on savings and returns. Saving $10,000 a year at 7% reaches $1 million in about 30.7 years — and roughly $693,000 of that is interest, not savings.
How much of the million is interest?
Usually the majority. Compound growth does the heavy lifting over long timelines, which is why starting early beats saving more later.
What if I already have savings?
Enter them in 'Already saved'. Existing money compounds from day one, so even a small head start cuts years off the timeline.
Does raising the return help more than saving more?
Both shorten the wait, but the math favors consistency: doubling yearly savings always halves the savings burden, while higher returns are never guaranteed.