Most financial portals and specialized finance websites offer financial calculators. These calculators are easy to use and best of all they are free. The Moneysmartz Financial Calculators category includes listings from many of the leading financial portals. A click from most of the Moneysmartz listings will bring you to a home calculator page with links to more specialized calculators organized by major category, including investing, mortgages, retirement planning, savings, and insurance. It is easy to get confused by the large number of websites offering financial calculators. The best advice is to stick with a site that you trust and find easy to use and then frequently visit that site as your calculator needs change. A good place to start is the Yahoo! Finance Calculator page with many specialized calculators, including banking and budgeting, career and work, college and education, family and home, insurance, loans, real estate, retirement, and taxes.