We like these websites for retirement planning education. Some of them include calculators to help estimate how much money you need to retire.

Analyze Now—www.analyzenow.com

About.com Retirement planning—www.retireplan.about.com

AARP’s Financial Planning—www.aarp.org/financial

U.S. Social Security Administration—www.ssa.gov

Bankrate.com—www.bankrate.com/retirement

The Vanguard Group—www.personal.vanguard.com/retirement

Fidelity Investments—www.personal.fidelity.com/retirement

Wiser Women—www.wiserwomen.com

Flexible Retirement Planner—www.flexibleRetirementPlanner.com

National Center for Policy Analysis—www.retirementreform.org