You might even try using an Excel formula. If you want to try to see whats going on behind the scenes in our calculator heres how to do the math yourself using the compound interest formula. The interest rate and number.
Create an Excel document to compute compound interest.
For monthly compounding the periodic interest rate is simply the annual rate divided by 12 because there are 12 months or periods during the year. Make sure to select the box for END In this equation you will likely solve for one of the above variables. What is the compound interest formula. In the most simple way to calculate compound interest on a TI-83 Plus the values entered for PY and CY will be identical Reference 3.