How to use Simple Interest Calculator
- Enter the principal.
- Enter the yearly interest rate and the time in years.
- Read the interest and the total amount.
About this tool
Simple interest is calculated only on the original principal: interest = principal x rate x time. It is used for some short-term loans, bonds and basic exercises. Unlike compound interest, it grows in a straight line.
Results are estimates for planning and education, not financial advice. Real offers can include fees, rounding and rules that are not modelled here.
Frequently Asked Questions
- What is the difference from compound interest?
- Compound interest also earns interest on interest already added, so it grows faster over long periods.
- How do I use months?
- Divide the number of months by 12 to get years, for example 6 months is 0.5 years.
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