Finance tool
Interest Rate Calculator
Use principal, annual rate, and time to estimate simple interest and total amount.
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How To Use Interest Rate Calculator
Quick notes to help you understand the result before you act on it.
Overview
Use this interest rate calculator for simple interest examples and quick planning.
It shows the interest amount and total amount.
Simple Interest Formula
- Interest = principal x rate x time / 100.
- Total amount = principal + interest.
Practical Tips
- Use compound interest calculator for compounding products.
- Use the same yearly basis for rate and time.
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FAQ
Common questions about this tool.
Does this find unknown rate?
No. It calculates interest from a given rate.
Is this compound interest?
No. It uses simple interest.