Compound Interest Calculator
See how your money can grow over time with compound interest and recurring contributions. Simple inputs, clean results, and actually useful.
Enter Your Numbers
Plug in a starting amount, monthly contribution, annual return, and time horizon.
Your Results
Here’s what your money could grow into.
Final Balance
$0.00
Total value at the end of the time period.
Total Contributions
$0.00
Your starting amount plus all monthly contributions.
Interest Earned
$0.00
Growth generated by compounding.
Enter your numbers and calculate to see how compound growth stacks up over time.
This is an estimate based on a fixed annual return and regular monthly contributions.
How It Works
Compound interest means your money earns returns, and then those returns earn returns too. The longer the timeframe, the more powerful that effect becomes.
- Initial Amount is your starting balance.
- Monthly Contribution is added every month.
- Interest Rate is your expected yearly return.
- Compound Frequency controls how often growth is applied.