Simple interest calculator
Enter the principal, annual rate and time to get the interest and final amount.
Result
$1,000 at 6% for 3 years earns $180 in simple interest.
Example
Compute simple interest on a principal in your browser. Values stay on your device; no live rates.
$1,000 at 6% for 3 years earns $180 in simple interest.
Processed locally in your browser.
Methodology
I = P·r·t, where P is principal, r the annual rate and t the years; final amount = P + I.
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