Free Tool
Compound Growth Calculator Pro
Model investment growth with contributions, inflation and goal planning — all in one tool.
Investment Details
$
%
S&P 500 historical avg ≈ 10%
yrs
150
Final Portfolio Value
—
—
Total Invested
—
Interest Earned
—
Growth
—
Portfolio Growth Over Time
Year-by-Year Breakdown
| Year | Start Balance | Interest Earned | End Balance | Total Growth |
|---|
Investment Details
$
$
%
yrs
150
Final Portfolio Value
—
—
Total Contributed
—
Interest Earned
—
Interest % of Total
—
Contributions vs Interest Growth
Year-by-Year Breakdown
| Year | Contributions | Interest | End Balance | % from Interest |
|---|
Investment Details
$
$
%
%
US avg inflation ≈ 3%
yrs
150
Nominal Value
—
—
Real Value (Today's $)
—
Inflation Cost
—
Real Return Rate
—
Nominal vs Real (Inflation-Adjusted) Value
Enter your target amount and we'll calculate how much you need to invest to get there.
Your Goal
$
e.g. $1,000,000 for retirement
%
yrs
150
$
To reach
—
in — years at —% return
Required Monthly Investment
—
—
Required Lump Sum Today
—
Total You'll Contribute
—
Interest Will Generate
—
Path to Your Goal
How compound growth works
01
Growth
See how a lump sum grows over time with a fixed annual return and chosen compounding frequency.
02
Contributions
Add regular monthly or quarterly investments and see how they accelerate your portfolio growth.
03
Inflation
Compare nominal vs real (purchasing-power-adjusted) portfolio value to understand true wealth.
04
Goal Planner
Work backwards from a target amount — find out exactly how much to invest monthly to get there.