Finra.org has a great retirement calculator online tool that you can use for free at http://apps.finra.org/investor_Information/Calculators/1/RetirementCalc.aspx. Or you can check out the government's Social Security calculators at http://www.ssa.gov/planners/calculators.htm.
Most banking websites will provide a retirement calculator on-line. There are also several investment sites that provide free on-line retirement calculators.
There are several good sites that display retirement calculators. One of the best ones is http://money.msn.com.
A simple retirement calculator can be made online. There are various sites such as the government pension website that will say what pension someone is likely to get in today's money which can be used in the calculator they also provide.
You can find an FERS retirement calculator at the following sites I found for you to look at. Here are the sites you can look at www.fedcalc.com/fers.jsp ,www.fedcalc.com/
There are an abundance of retirement savings calculators online. Some of the more popular calculators are on the sites Schwab(which is named after Charles Schwab), Kiplinger and Energy Star which is a government run website.
Yes, the United States government does have a free retirement calculator. In addition, many other sites also offer a way to calculate your retirement plans.
There are many professional sites with an IRA calculator. Planning tips is one of these sites, you can just go to their site and click the link to the IRA calculator (you may be on it right away).
There are many sites that provide an online fraction calculator. Examples of these sites are Home School Math, Online Conversion and Help With Fractions.
Roth IRA calculators can be found online at various sites including one called Dinkytown. Other sites which offer Roth IRA calculators are Marketwatch, Time Value and Planning Tips.
There are a number of online sites that contain loan rate calculators. The official sites for TD Bank and Quicken Loans, for example, both feature this calculator.
There are many sites with a loan repair calculator. These sites offer just a calculator. http://www.thecalculatorsite.com/finance/calculators/loancalculator.php#.UD5ZXcGPVIE is one such site
H&R Block has an income tax calculator online. You can also use the autofill applications online at the IRS site. And, if you want a calculator that you can take with you, check the App Store.