# Compound Interest Calculator

\( \) \( \)\( \)\( \)An online calculator to calculate the total savings, given the principal \( P \), the annual interest rate \( r \) and the number of compunding per year, is presented.

## Compunding Formula

If an amount P (principal) is invested at the annual rate \( r \) and is compounded \( n \) times a year , the amount at the end of \( t \) years is given by the compunding formula:

\[ A = P \; \left(1 + \dfrac{r}{n} \right)^{n \times t} \]

## Use of the Calculator

## Links and References