Compound Interest Calculator
GoCalc
Calculate how your investment grows with compound interest over time.Updated 2026-03-16
Future Value
$0
Total Interest
$0
Total Contributions
$0
Year-by-Year Growth
| Year | Contributions | Interest | Balance |
|---|
How to Use Compound Interest Calculator
- Save or print the results
- Fill in the required values above
- Try different values to compare
- Adjust optional parameters for precision
Frequently Asked Questions
What is compound interest?
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. It's essentially "interest on interest."
How does compounding frequency matter?
More frequent compounding (daily vs annually) yields slightly more interest because interest is calculated and added to the principal more often.
Is my data safe?
Yes. All calculations run locally in your browser. No data is sent to any server.