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Compound Interest Calculator

See how your money grows over time with compound interest. Add monthly contributions to see the power of consistent investing. Perfect for savings goals and retirement planning.

Investment Details

Total contributions: $120,000

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Instant results as you type
Standard compound interest formulas

Final Balance

$302,370

You will earn $172,370 in interest (57.0% of final balance)

Total Invested

$130,000

Interest Earned

$172,370

Balance Breakdown

Initial Investment$10,000

3.3%

Total Contributions$120,000

39.7%

Interest Earned$172,370

57.0%

Investment Summary

Initial Investment$10,000
Monthly Contribution$500
Annual Rate7%
Time Period20 Years
Comp FrequencyMonthly
Total Contributions$130,000
Interest vs Principal132.6%

Growth Over Time

Yr 1
$16,955
Yr 2
$24,413
Yr 4
$40,986
Yr 6
$60,042
Yr 8
$81,952
Yr 10
$107,144
Yr 12
$136,110
Yr 14
$169,416
Yr 16
$207,710
Yr 18
$251,742
Yr 20
$302,370

The Power of Compound Interest

Without Compound Interest

$130,000

Simple sum of principal + contributions

With Compound Interest

$302,370

Extra $172,370 earned!

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