Simple interest calculator help |

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Principal amount (P) |
The principal amount (P) is the amount lent or borrowed.
The amount may contain max two digits after its decimal point. The amount entered may contain a comma (,) or point (.) as a decimal point separator. Do not use the thousands separator in the amount. Correct entered amounts5123.04 5123,04 6123 Incorrect entered amounts5,123.04 5.123,04 5123.041 The simple interest equation: I = P * R * T FV = P + I FV = P + P * R * T FV = P * (1 + R * T) P = FV / (1 + R * T) where: FV = Future value I = Interest amount P = Principal amount R = Interest rate (as a decimal, not in percentage) T = Time period |