Hey, it beats the hello world app :D

Okay okay, this one actually a use.


Or you could use my approximations for conversions:

C » F: double C and add 25.  Gives you a general idea of the whereabouts for any practical temperature you'd want to convert.
F » C: opposite of above, subtract 25 from F, and halve.

...or if you can calculate 1.8x a number in your head, go ahead :P

Kelvin is easy, just add/subtract 273 degrees to C and you've got it.