Welcome to my (currently tiny) collection of Pokémon-related calculators! As of now, there are only two, but this section should expand as I have time.
A calculator that tells you the effectiveness of types of moves against types of defending Pokémon. Even works for Dual-typed Pokémon!
By the way, for you developers, this calculator is query-able! Click it to learn more.
A very simple calculator that tells you the catch probability using different Pokéballs. 'Nuff said.