Use NerdWallet's calculator to see how much you'll need in retirement and explore different ways to reach your goal.

The calculator works like other retirement calculators we’ve covered, but it gives you an idea of how much you need to save monthly, which makes your goal a little more attainable.

"Chief Excel Officer" Chandoo runs down how to use Excel's Goal Seek feature to create a kind of retirement target advisor. You'll fill out a spreadsheet with the financial status you seek to ...