### Compound Interest Calculator

Enter the values you know. The value left out will be automatically calculated and displayed.

### Compound Interest Formula

A | Total accrued amount i.e. (principal + interest) |

P | Principal Amount |

I | Interest Amount |

R | Annual Nominal interest Rate in percent |

r | Rate of interest per year r = R / 100 |

t | Time period involved in years(i.e. Calculation period) |

n | Number of compounding periods per unit |

There is a special case when n -> ∞. This is called continuous compounding.