Capture Calculator
Catch odds and how many balls you actually need
How the catch rate is worked out
Pick the species and set the ball, the status condition, the level and how much HP it has left. The calculator applies the Generation 5 onwards formula and gives the odds per throw, how many balls you need on average and the chance of landing it within 1, 5, 10 or 25 throws. Sleep or freeze multiplies the rate by 2.5; paralysis, poison or burn, by 1.5.
Balls that depend on the situation, such as the Dusk Ball or the Quick Ball, ask you to tick whether it applies instead of assuming the best case; the Timer Ball counts turns and the Level Ball asks for your own Pokémon's level. Critical captures are left out, since they depend on how many species you have caught. If a species has no known catch rate, it says so rather than guessing.