This Web site provides a helpful tool from the University of Texas Bureau of Economic Geology for the irksome need to convert units of measurement. What's notable about this site is that it includes common length and area conversions as well as less frequently used units of decimal degrees; radians; degrees, minutes, and seconds; units of scale; and GPS time. The site is actually a conversion calculator, rather than just a list of conversion factors, which should serve to eliminate error on behalf of the user. The site is simple to use and displays multiple units on the same screen.