[BlackLight]

Originally Posted by Fat Umbreon Dan

you are welcome to submit improvements, here is the source code

http://www.smogon.com/calc/dcalc.js

if you don't, somebody else will, when they feel like it.

Okay, what is this?
"opens source code"
O.O nopenopenopenopenope. That's a lot more complicated than I thought it would be.

I'll third Jelli's suggestion. The Honkalculator works pretty well.