Amount of money that you have available to invest initially, or the amount of money you already have invested.
Amount that you plan to invest every month.
Length of time, in years, that you plan to save.
Your estimated annual interest rate.
Range of interest rates (above and below the rate set above) that you desire to see results for. For example, if you set the interest rate to 10% and the variance to ± 2%, the calculations will include 8%, 10%, and 12%..
Times per year that interest will be compounded.