METHOD
How this tool works
Simple interest equals principal multiplied by annual rate and time.
CALCULATORS
Simple Interest Calculator
Calculate interest without compounding.
FreeNo accountRuns locally
Interest
Final total
Principal
EXAMPLE
A quick check
1,000 at 5% for 3 years earns 150 in simple interest.
Formula / reference
Interest = principal × annual rate × timeDesigned for a single task.Inputs are processed in your browser; Utilens does not require an account or intentionally send your entered tool values to an application server.
Planning estimate. Rates, taxes, fees and real-world terms can change the result; verify important financial decisions with the relevant provider or adviser.
Quick answers
Does interest earn interest?
No. That is the difference between simple and compound interest.
Can I enter partial years?
Yes. Decimal years are supported.