Gen 8 Pokémon Catch Rate Calculator
Estimate your catch probability in mainline Generation 8 style battles.
How this catch rate calculator gen 8 works
This tool estimates capture odds using the standard modern catch formula used in Gen 8 style wild encounters. You enter the wild Pokémon's HP, its base catch rate, your Poké Ball modifier, and any status effect bonus. The calculator then returns your approximate chance to catch on a single throw.
Inputs explained
- Max HP / Current HP: Lower current HP increases your chance.
- Base Catch Rate: Species-dependent value from 1 to 255.
- Ball Modifier: Multiplier based on the ball and battle context.
- Status Modifier: Sleep/Freeze gives the highest bonus in this model.
Formula used
The calculator uses a widely documented modern capture flow:
a = floor((((3 × MaxHP - 2 × CurrentHP) × CatchRate × BallModifier) / (3 × MaxHP)) × StatusModifier)
If a ≥ 255, capture is guaranteed.
b = floor(1048560 / √√(16711680 / a)), and final capture chance is (b / 65536)4.
The output includes your per-throw chance, expected throws, and cumulative odds over multiple throws.
Best ways to improve your odds
- Bring the target to 1 HP whenever possible.
- Use Sleep for the strongest status boost.
- Match the encounter to the right ball (Quick early, Dusk at night/caves, Repeat for already-owned species).
- In long fights, Timer Ball can become very strong.
- Carry several ball types so you can adapt in real time.
Important Gen 8 notes
This calculator focuses on the standard catch formula and common ball multipliers. Some balls have special rules (such as level-based or additive effects), and certain encounters (for example some raid contexts) may use special handling not fully represented here. Treat this as a practical estimator for most normal wild battle scenarios.
Quick example
Suppose you are trying to catch a Pokémon with catch rate 45 at 20% HP using an Ultra Ball and Sleep. Plug those values in and compare the output to Great Ball or Dusk Ball. You can immediately see whether switching ball type gives better value than throwing again with your current one.
FAQ
Is this a guaranteed exact simulator?
It is a high-quality probability estimator based on the standard capture math. Special cases can differ.
Can I use custom values?
Yes. Choose Custom modifier and input any multiplier you want.
Why show cumulative probability?
Single-throw odds can look small, but multiple attempts stack quickly. Cumulative probability helps you plan items and avoid running out of balls.