Compound Interest Calculator
Project compound interest from principal, contribution, return, compounding frequency, and years.
Example
$10,000 plus $250 monthly at 6% for 20 years grows to roughly $172,000.Frequently asked questions
Everything you need to know to read the result with confidence.
What does the Compound Interest Calculator do?+
Project compound interest from principal, contribution, return, compounding frequency, and years.
How do I use this compound interest calculator?+
Enter starting savings, monthly additions, annual return, and time. The calculator compounds growth monthly.
What inputs should I enter?+
Enter starting amount, monthly contribution, annual return, years, compounds per year. Leave the default values in place when they match your situation.
What formula does this calculator use?+
Projection applies monthly contributions and monthly growth from the annual return.
Can I share my result?+
Yes. Change the inputs, copy the page link, and the current inputs will be included in the URL for sharing or reopening later.