For our clients who are interested in web-based financial calculators, we have found a number of sites which provide free calculations. We do not vouch for their accuracy or their appropriateness for any given situation.We apologize that we cannot provide our own website calculator resource, as the number of calculators needed to properly cover the many client requirements and the respective cost of those calculator resources make it cost-prohibitive for us at this time. We should point out that most calculations can be done on a hand-held calculator. We use the HP10B and would happy to assist you in meeting your needs.If you do not find what you are looking for at these sites below, please do not hesitate to contact us.
 
http://www.thomsonfn.com/
Click on Research and Tools
Nice charts and graphs

http://www.homefair.com/
The homesite of the National Association of Realtors
An event-driven calculator site designed to cover a lot of bases
Nice Home Affordabiltiy and Moving calculators

http://www.fp.edu/
The homesite of the College of Financial Planning
The calculators are powered by TimeValue software, a prominent supplier of webbased calculators

http://www.usnews.com/
Click on Money & Business
Click on Tools
Has two unique charts: debt to income ratio and the currency calculator

http://www.fool.com/  
This the Motley Fool website, an investment advisory website.
Not sure if this one is really free.

http://www.calculatorweb.com/
A colorful site with basic calculators

http://www.quicken.com/
Click on Planning & Tax
Has tax calculators for both income and estate tax

http://www.finaid.org/
The website for college planning and financial aid calculators