This interest calculator can compute either simple interest or compound interest over a given time period. Enter the principal, annual rate, and duration to see how much interest accrues and the final amount.
Use it to understand how quickly savings grow, how expensive borrowing can be at different rates, and how compounding frequency changes your results.
Enter your information in the fields above, run the calculation, and review the result to understand what it means for your situation.
Look at the output in the context of your overall goals rather than in isolation. Consider how sensitive the result is to changes in your inputs (for example, adjusting the amount, rate, or time) to understand which factors matter most.
This tool is a simplified model and does not capture every nuance of real life. Treat it as a planning aid, not a guarantee. For important financial or health decisions, combine these results with professional advice and more detailed analysis.