http://www.interest.com/content/calculators/index.asp

http://www.moneychimp.com/calculator/compound_interest_calculator.htm

http://calculators.interest.com/index.asp

http://www.bankrate.com/brm/rate/calc_home.asp?link=5

http://www.webmath.com/simpinterest.html

http://www.bankrate.com/brm/popcalc2.asp

http://math.about.com/library/blcompoundinterest.htm

http://www.bankofinternet.com/interest-calculator.aspx

http://www.finaid.org/calculators/interestcap.phtml

http://www.pine-grove.com/Web%20Calculators/interest.htm