Request: GUCT-calculator

Lately, i've read a lot of research on this website, regarding the catch mechanics. I now know that the multipliers of razz/great throw/ultra ball/curveball are 1.5, 1.5, 2, 1.7, for that, i'm really gratefull.

I'm now looking for a calculator, which I can die to calculate the probability to catch a Pokemon. For example: if I Find a lvl 30 Gengar, and if I do a great throw/ultra ball/razz Berry/curveball, what are the odds that I actually catch it?

Does that calculator yet exist?