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Compound Interest Calculator

See how regular saving grows with compound interest.

Starting amount

Monthly contribution

Annual interest rate (%)

Years

Compounding

Contribution timing

Final balance

Total contributed

Interest earned

Interest share

Growth by year

Year	Balance	Contributed	Interest

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What Is Compound Interest Calculator?

The Compound Interest Calculator projects how a starting balance and regular monthly contributions grow at a given rate. It shows the final balance, total contributed, interest earned, and a year-by-year growth table.

Who Uses the Compound Interest Calculator?

Savers use it to see whether a monthly amount reaches a target, and to compare paying monthly against paying quarterly or annually.

How to Use the Compound Interest Calculator

Enter your starting amount and monthly contribution.
Set the annual rate, number of years, and compounding frequency.
Choose whether contributions land at the start or end of the period.
Read the final balance and the year-by-year table.

Why Choose Our Compound Interest Calculator?

Monthly, quarterly, and annual compounding
Start-of-period versus end-of-period contributions
Year-by-year breakdown of balance and interest

Try the Compound Interest Calculator above — it is free, fast, and works on any device. Bookmark this page to return whenever you need it.