⚠ Running on TEMPORARY placeholder returns — not the verified series. Not for delivery.
Start This Month
What compounding actually does to your money.
Type what you have and what you can add each month. Then drag the monthly amount and watch it move — measured against the S&P 500's real history, the good decades and the brutal ones. Nothing here is saved or sent. It all happens in your browser.
Your money
$
What you can add every monthdrag to explore
$400/ month
$0$2,000
Grab the dot and drag — everything recomputes live.
The honest picture
Every real 34-year stretch the S&P 500 has actually delivered — best, worst, and the one in the middle.
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Where you'd stand — you're 31 nowmedian of history