Calculator

Simple Interest Calculator

Interest and total amount on a principal over days, months or years.

Rs
% / year
Results update as you type.

Interest

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Principal
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Total amount (principal + interest)
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Interest per month
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Interest per day
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Formula

Interest = P × R × T, where P is the principal, R the yearly rate (as a decimal) and T the time in years. Months are divided by 12 and days by 365.

Simple interest is earned only on the original principal, never on interest already earned. It is used for short-term deposits, some profit payouts and informal loans; for savings that reinvest profit, use the compound interest calculator.