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Simple Interest Calculator

Compute simple interest: I = P × r × t. Returns interest earned and total amount.

Interest
$1,500.00
Total amount
$11,500.00

Compute simple interest: I = P × r × t. Returns interest earned and total amount.

Frequently asked questions

+What is the simple interest for?

Compute simple interest: I = P × r × t. Returns interest earned and total amount. Enter the inputs on this page and the result updates instantly.

+Is this calculator free?

Yes. Every calculator on thesupercalculator is free to use with no sign-up and no ads on the calculator itself.

+Does this work on mobile?

Yes. Every calculator is fully responsive — the layout adapts to phones, tablets, and desktops.

+Is my data private?

Yes. All calculation happens in your browser. No inputs or results are sent to any server.

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