Are you on track to have enough money after you retire? Plugging your information into an online savings tool can help give you an idea where you stand — but it can also highlight how far you are from your goal.

"It's very scary to use the retirement calculators that are all over the place," Suze Orman, financial expert and best-selling author of "Women and Money," tells CNBC Make It. "Because when you do that, you see that you're going to need $5 million to retire and all you have is $800,000." Or you may be reminded that you're among the 21 percent of Americans who have nothing at all saved for their golden years.