Skip to main content

Compound Interest Calculator

New

Calculate compound interest and see how your investments grow over time with monthly contributions.

4.5(127 ratings)

Rate this tool

How to Use

1

Enter principal

Enter initial investment amount.

2

Set rate & time

Enter interest rate and time period.

3

Calculate

View growth projection.

Features

Growth chart
Monthly contributions
Annual/monthly compounding
Export results

Frequently Asked Questions

Compound interest is interest calculated on both the initial principal and accumulated interest from previous periods.

Calculate compound interest and watch your investments grow over time. See how principal, rate, time, and compounding frequency affect your returns with detailed projections.

Did You Know?

Albert Einstein allegedly called compound interest 'the eighth wonder of the world' and said 'he who understands it, earns it; he who doesn't, pays it.' Whether he actually said this is debated, but the math is undeniably powerful!

  • The more frequent the compounding, the higher your returns
  • Even 1% difference in rate compounds significantly over decades
  • Start early - time is the most powerful factor in compounding

Explore Other Categories

Discover more useful tools from different categories