This simple investment calculator is the single most important calculator you will ever use if you want to generate wealth. Go ahead and adjust each of the parameters to see how they affect the estimated future value. A rate of return of 10% is a good number to use since it follows what the S&P 500 has returned (on average) since 1957.

You’ll soon notice that the single biggest factor that drives wealth creation is the number of years you’re invested in the market.