2nd October 2019


What is the formula for calculating compound interest?

Compound interest formula (including principal): A = P(1+r/n)(nt) If an amount of $5,000 is deposited into a savings account at an annual interest rate of 5%, compounded monthly, the value of the investment after 10 years can be calculated as follows P = 5000. r = 5/100 = 0.05 (decimal).

Likewise, what is the formula of interest?

Simple Interest Formulas and Calculations: Use this simple interest calculator to find A, the Final Investment Value, using the simple interest formula: A = P(1 + rt) where P is the Principal amount of money to be invested at an Interest Rate R% per period for t Number of Time Periods.

How do you calculate interest earned?

To calculate the interest from a savings account, you'll need the following pieces of information:
  1. The amount of your deposit or the amount you lend, using the variable “P” for principal.
  2. When interest is calculated and paid (yearly, monthly, or daily, for example), using “n” for the number of times per year.
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