The Power of Compound Growth
Einstein called it the "eighth wonder of the world." See exactly how your money multiplies over time — and why starting today matters more than starting perfectly.
3.9×
Your money multiplier
Your Assumptions
Starting lump sum (can be zero)
7.0%
Historical global equities ~7–9% nominal long-run. Adjust for your strategy.
2.5%
Real return = Growth Rate − Inflation.
20 yrs
2.0%
Typically linked to salary growth.
Rule of 72
—
Years to double your money at 7% return
The Rule of 72: divide 72 by your annual return to estimate how many years it takes for money to double. At 7%, your money doubles every ~10.3 years — and doubles again from there.
Final Value
—
in 20 years
Real Value (Inflation Adj.)
—
Today's purchasing power
Total Contributions
—
Money you put in
Investment Growth
—
Return on top of contributions
Portfolio Growth Over Time
Where Your Money Comes From
Year-by-Year Summary
| Year | Annual Contrib. | Growth This Year | Total Contributions | Portfolio Value | Real Value |
|---|