Simple interest
Finance / FREE CALCULATOR
Calculate interest that does not itself earn interest.
Your answer starts here.
Enter your values and select Calculate to see the result and any available breakdown.
How to use this calculator
- Enter principal. Use the unit shown beside the field.
- Enter annual rate (%). Use the unit shown beside the field.
- Enter years. Use the unit shown beside the field.
- Select Calculate and review the result. Select Reset to restore the example inputs.
How the calculation works
Interest = P × r/100 × years.
Worked example
1,000 at 5% for three years earns 150.
Understand your result
Use this result together with the worked example and the assumptions below. Calculate interest that does not itself earn interest.
Assumptions and limitations
Calculate interest that does not itself earn interest. Check units and assumptions before using the result in a decision. Results are rounded for display.
Questions about this tool
What does this tool calculate?
Calculate interest that does not itself earn interest.
What should I check before using the answer?
Calculate interest that does not itself earn interest. Check units and assumptions before using the result in a decision.
Related guides
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