University of Illinois
University of Illinois Urbana Champaign: Ww2010: Units of Temperature
The Kelvin, Celsius and Fahrenheit temperature scales are discussed. Site lists and explains formulas for converting between the different scales.
Other
Celsius, Fahrenheit, Kelvin, Reaumur, Rankine Temperature Conversion Formulas
A resource for converting between five different temperature scales. Also provides the formulas and the temperature scale ranges.