Other
Randelshofer / Online Scientific Calculator
This is an online scientific calculator! Just type as if you were using a handheld calculator. Includes trigonometric functions, degrees, radian modes and other useful functions.
Other
Metric Conversion Calculator and Charts
Metric Conversions offers online calculators for making conversions, downloadable tables in many types of metric conversion (pdf format), and free conversion tools to put onto your website or dynamic pages.
Discovery Education
Discovery Education: Web Math: Find Out Things About Circles
This WebMath site will assist with finding the radius, diameter, circumference, and area of a circle.
Other
State Farm Insurance: Allowance Calculator
Would you like to see how your allowance can grow over time? Use this online calculator to figure it out.