Millionaire Calculator
See exactly how many years until your investments reach $1,000,000 — enter your savings, monthly investment, and expected return.
The first million is the hardest — after that, compounding accelerates and the second million arrives far faster.
37yr
Years to $1M at $500/mo and 7% return — starting from zero
2×
Starting at 25 vs 35 can halve the monthly contribution needed to hit $1M
$70k
Annual compound growth on $1M at 7% — even without adding another dollar
The path to your first million
How compounding and consistency build wealth.
Time is the real variable
At 7% annual return, money doubles every ~10 years. $50k today is $100k in 10 years, $200k in 20, $400k in 30 — without adding a single dollar. The combination of regular contributions and compounding time is how most millionaires are made.
The second million comes faster
The first million is the hardest. Once you have $1M growing at 7%, you're earning $70,000/year in returns alone. At $2M, that's $140,000/year. The trajectory steepens dramatically once compounding has a large base to work with.
Contribution consistency beats market timing
Investing $500/month every month — through crashes and rallies — consistently outperforms trying to time the market. Dollar-cost averaging reduces the impact of volatility and removes emotion from the equation.
How the Millionaire Calculator Works
Formula
Compounds monthly until Balance ≥ $1,000,000:
Balance(m+1) = Balance(m) × (1 + r/12) + Monthly Investment
Where r = Annual Return ÷ 100Enter current savings
Total invested assets today. Use $0 if starting fresh.
Set monthly investment
How much you'll add each month. Consistency is more important than the amount.
Choose return rate
7% is conservative and inflation-adjusted. Use 9–10% for nominal returns.
Read the result
Years to $1M, total you contributed, and how much comes from investment returns.
The calculator simulates monthly portfolio growth by applying a monthly compounding rate and adding your monthly contribution. It runs until the balance hits $1,000,000.
Total contributed is what you personally invested. Interest earned is what the market added. On a 30+ year journey, the market typically contributes more than you do.
Frequently Asked Questions
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