How this Gen 6 catch rate calculator works
This tool estimates your capture chance in Pokémon X/Y and Omega Ruby/Alpha Sapphire using the standard Generation 6 catch formula. Enter your target's catch rate, HP values, Poké Ball multiplier, and status effect to get an estimated single-throw chance and cumulative chance across multiple throws.
What you need to enter
- Catch Rate: The species' base capture value (1 to 255).
- Max HP / Current HP: Lower HP increases your odds significantly.
- Ball Modifier: Depends on the ball and its conditions.
- Status Modifier: Sleep/Freeze are strongest in Gen 6.
- Throws: Useful to estimate practical odds over repeated attempts.
Generation 6 capture math (simplified)
For normal captures (excluding special scripted encounters), the game computes a value usually called a, then converts that into a shake-check threshold.
The calculator follows this model and reports both single throw chance and cumulative chance over N throws:
Common ball multipliers in Gen 6
| Ball | Typical Modifier | Notes |
|---|---|---|
| Poké Ball | 1x | Baseline |
| Great Ball | 1.5x | Reliable upgrade over Poké Ball |
| Ultra Ball | 2x | Strong general-purpose ball |
| Quick Ball | 5x (turn 1) | Excellent opener |
| Dusk Ball | 3.5x (night/caves) | Very efficient in correct environments |
| Repeat Ball | 3x | Only if species already registered as caught |
| Master Ball | Guaranteed | 100% capture |
Practical tips to improve catch odds
1) Always reduce HP safely
Going from full HP to low HP can transform poor odds into manageable odds. Moves like False Swipe are ideal because they leave the target at 1 HP.
2) Prioritize Sleep or Freeze when possible
In Gen 6, Sleep/Freeze gives a stronger status bonus than Paralysis/Burn/Poison. If your team supports reliable sleep setup, it's often worth the turn.
3) Match the right ball to the situation
Quick Ball turn 1, Dusk Ball at night, and Repeat Ball for known species can all outperform Ultra Ball under the right conditions.
4) Think in cumulative odds, not single attempts
A 15% single-throw chance may feel low, but over repeated throws your overall success rises quickly. Use the throw count input to plan realistically.
Important limitations
- This calculator focuses on standard Gen 6 wild capture behavior.
- It does not model edge-case encounter scripting.
- Critical capture mechanics are not included in this simplified estimator.
- For conditional balls (like Timer Ball), use the custom ball modifier that matches your current battle state.
If you want fast field use: drop HP to 1, apply Sleep, and use the strongest valid ball modifier for your context. That combination gives the biggest jump in capture probability.