Generation II games (Gold, Silver, Crystal) introduced a new capture algorithm that became the foundation for future generations. This calculator helps you determine your chances of catching any Pokémon in these games.
To use this calculator, select the Pokémon you want to catch, adjust the HP percentage slider, choose the Poké Ball you want to use, and set any status conditions.
Results
Calculation breakdown:
Base Catch Rate:
0
Modified by Ball:
0
HP Factor:
0
Status Modifier:
0
Final Capture Rate:
0
Special Ball Information:
About Gen II Capture Mechanics
In Gen II, the capture formula is:
X = max(((3M - 2H) * C) / (3M), 1) + S where:
- M: Pokémon's max HP
- H: Pokémon's current HP
- C: Modified catch rate (base catch rate adjusted by ball)
- S: Status bonus (10 for sleep/frozen, 5 for other status, 0 for none)
The chance of capture is (X+1)/256.
Note: Some Poké Balls in Gen II (Fast Ball, Moon Ball, Love Ball) have bugs in their implementation, which are accurately reflected in this calculator.
