Simple Interest Calculator
Calculate simple interest and the final amount for a principal, rate and time.
Runs in your browser — files never leave your device
Final amount
$1,150
Interest
$150
How it works
Enter principal, annual rate and time to calculate simple interest and the final amount.
Frequently asked questions
- How is simple interest different from compound?
- Simple interest is charged only on the original principal; compound interest also earns on accumulated interest.
- Is my data uploaded?
- No — it runs in your browser.
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