Notes: Base formula, written as I = Prt or I = P × r × t where rate r and time t should be in the same time units such as months or years. If you enter them differently this calculator will adjust the answer accordingly. r is entered in % but converted and calculated in decimal form.
Time conversions are based on day count of 365 days/year, 30.4167 days/month and 91.2501 days/quarter.
This calculator finds I, the simple interest where P is the Principal amount of money to be invested at an Interest Rate r% per period for t Number of Time Periods. Where r is in decimal form; r and t are in the same units of time.
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