Pokémon Capture Chance Calculator
Estimate your chance to catch a wild Pokémon based on HP, catch rate, Poké Ball, and status condition.
How this Pokémon capture calculator works
This tool estimates catch probability using the classic modern capture pipeline (commonly associated with later main-series games). It combines your Pokémon's base catch rate, current HP ratio, ball bonus, and status effects into a capture value, then converts that into a per-throw chance.
a = (((3 × MaxHP − 2 × CurrentHP) × CatchRate × BallBonus) / (3 × MaxHP)) × StatusBonus × OtherBonus
If a ≥ 255, the capture is treated as guaranteed in this model. Otherwise, the calculator estimates the 4-shake check probability used in classic catch mechanics.
How to use it effectively
1) Enter the base catch rate
The base catch rate is a species-specific value. Legendary Pokémon tend to have very low values, while common route encounters can be much easier.
2) Lower HP as much as possible
HP has one of the biggest effects. Bringing a target to 1 HP (for example using False Swipe) is one of the best ways to improve capture success.
3) Apply status conditions
Sleep and freeze typically give the strongest status bonus in catch formulas. Paralysis is still useful and often easier to set up consistently.
4) Choose the right ball
- Ultra Ball is a strong general-purpose choice.
- Quick Ball can be excellent on turn 1.
- Timer Ball improves in long battles.
- Dusk Ball is great in caves/night where conditions apply.
- Master Ball guarantees capture.
Capture strategy tips
- Open with Quick Ball if you are farming or chain-catching.
- If that fails, transition to HP control + status setup.
- Use sleep for hard targets when possible.
- Track cumulative odds: even modest per-ball odds become strong over many throws.
- Bring enough balls for low-rate encounters; variance can be brutal.
Important notes
Pokémon capture systems can vary slightly by generation, game, battle context, and special mechanics. This calculator is a practical estimate tool, not an official simulator for every edge case.
For planning purposes, though, this model is excellent: it lets you compare approaches quickly and decide whether changing status, switching balls, or weakening HP further is worth the extra turns.