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Compound Interest Visualizer

财务

Project compound growth with recurring contributions, milestones, and inflation-adjusted value.

ttb run compound-interest
Snapshot
Effective monthly return
0.667%
Rule of 72 estimate
9.0 yrs
This projection assumes a steady average return and fixed monthly contributions. Real markets bounce around a lot more than this chart does.
Projected balance
$368,412
Total contributed
$135,000
Investment growth
$233,412
Inflation-adjusted value
$224,831

Year-by-year growth

Blue shows what you put in. Green shows what compounding added on top.

20 years
Year 1
$22,470
Year 2
$30,560
Year 3
$39,321
Year 4
$48,810
Year 5
$59,086
Year 6
$70,215
Year 7
$82,268
Year 8
$95,321
Year 9
$109,458
Year 10
$124,768
Year 11
$141,348
Year 12
$159,305
Year 13
$178,752
Year 14
$199,814
Year 15
$222,623
Year 16
$247,325
Year 17
$274,078
Year 18
$303,052
Year 19
$334,430
Year 20
$368,412

Milestones

$25,000Year 2
$50,000Year 5
$100,000Year 9
$250,000Year 17
$500,000Not reached

Ending year snapshot

Final year growth$27,982.47
Monthly contribution total$6,000.00
Growth multiple2.73×
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如何使用 Compound Interest Visualizer

Enter your starting balance, monthly contribution, annual return assumption, and timeline to project long-term investment growth. The compound interest visualizer estimates how contributions and earnings stack up over time, shows major balance milestones, and even adjusts the ending value for inflation so you can compare future dollars to today’s purchasing power.

1

Set your starting point

Enter the amount you already have invested and how much you plan to add each month.

2

Choose your growth assumptions

Set the annual return, compounding frequency, contribution timing, and inflation rate.

3

Review the projection

Compare final balance, total contributions, and investment growth across the full timeline.

4

Scan the milestones

Use the year-by-year bars and milestone list to see when your plan could cross major thresholds.

常见问题

Is this a guaranteed forecast?+
No. It uses a steady average return assumption for planning, but real market returns vary from year to year.
Why show inflation-adjusted value?+
Because a future balance may sound large in nominal dollars while buying less in real-world terms. Inflation-adjusted value adds useful context.
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