How much do plan to have saved for retirement?

How much you have in savings for retirement really depends upon how much income you will have in retirement and how much you need for expenses.
Just considering savings does not consider the complete picture.
I am not a financial planner, but I certainly recommend speaking with one when doing retirement planning. They can give you tips on calculating expenses, estimating income (social security-pension) and help you determine a plan that fits your requirements.