Prt

Simple Interest Calculator

Interest charged on the original amount only: I = P × r × t.

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Result…

$
% / yr
Time in

Days count on a 365-day year.

 

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How it's calculated

I = P × r × t
Total = P × (1 + r × t)

Simple interest never compounds: each year earns the same amount on the original principal. It is used for some short-term loans, bonds' coupon payments and car loans in some markets. For interest on interest, use the compound interest calculator.

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