At withdrawl rate, when you've retired from a Fortune 500 company, you can expect to generate annually, and this will change to per year, towards the end. Projected nest-egg at the end of your life:
calculated from your savings and retirment investments. Note that substantial inheritance/sales, interest rates, the cost of living in your state and raising children will all have impacts. Allow this to be a broad gauge to see if your retirement date may work for you.