Catch Rate Calculator Gen 9

Catch Rate vs. HP

This chart illustrates how the catch probability increases as the Pokémon’s HP decreases.

What is a catch rate calculator gen 9?

A catch rate calculator gen 9 is a specialized tool used by Pokémon trainers to determine the exact probability of successfully capturing a wild Pokémon in the Scarlet and Violet games. Unlike just “chucking a ball and praying,” this calculator uses the precise mathematical formula embedded within the game’s code. By inputting variables such as the Pokémon’s species, its current health (HP), any status conditions it has, and the type of Poké Ball used, a player can see their statistical chance of success. This allows for smarter strategies, helping trainers decide whether to use a valuable Apricorn Ball or simply weaken the Pokémon a little more.

catch rate calculator gen 9 Formula and Explanation

The core of Pokémon capture mechanics in Generation 9 is a two-step formula. First, a modified catch rate (let’s call it ‘a’) is calculated. Then, this value is used to determine the probability of the Poké Ball shaking without the Pokémon breaking free. This must happen four times in a row for a successful capture.

The formula for the modified catch rate ‘a’ is:

a = floor( ( ( 3 * MaxHP - 2 * CurrentHP ) * CatchRate * BallBonus ) / ( 3 * MaxHP ) * StatusBonus )

If ‘a’ is 255 or greater, the capture is guaranteed. Otherwise, a second value, the ‘shake check’ value ‘b’, is calculated:

b = floor( 1048560 / sqrt( sqrt( 16711680 / a ) ) )

For each of the four required shakes, the game generates a random number between 0 and 65535. If the random number is less than or equal to ‘b’, the shake is successful. Therefore, the probability for one successful shake is (b + 1) / 65536, and the total probability of catching the Pokémon is this value raised to the 4th power.

Formula Variables

Variable	Meaning	Unit	Typical Range
MaxHP	The Pokémon’s maximum health points.	HP (Points)	10 – 700+
CurrentHP	The Pokémon’s current health points.	HP (Points)	1 – MaxHP
CatchRate	The base catch rate of the Pokémon species.	Unitless	3 – 255
BallBonus	Multiplier from the Poké Ball used.	Multiplier (x)	1x – 5x
StatusBonus	Multiplier from a status condition.	Multiplier (x)	1x, 1.5x, or 2.5x

Practical Examples

Example 1: Catching a Weakened Lechonk

Imagine you encounter a Level 5 Lechonk with 20 Max HP. Its base catch rate is 255 (the easiest to catch). You use False Swipe to bring it down to 1 HP and throw a standard Poké Ball.

• Inputs: MaxHP=20, CurrentHP=1, CatchRate=255, BallBonus=1, StatusBonus=1
• Resulting ‘a’ value: ~508 (Capped at 255)
• Interpretation: Since the ‘a’ value is 255 or greater, this is a guaranteed catch (100% probability).

Example 2: Trying to Catch Iron Valiant

Now, consider a much tougher target: Iron Valiant, with a base catch rate of just 10. It has 250 Max HP, and you’ve managed to get it down to 50 HP and put it to sleep.

• Inputs: MaxHP=250, CurrentHP=50, CatchRate=10, BallBonus=2 (Ultra Ball), StatusBonus=2.5 (Sleep)
• Resulting ‘a’ value: ~42
• Interpretation: This ‘a’ value leads to a shake check value ‘b’ of about 26044. The final catch probability is approximately 21.2%. This demonstrates how even with significant advantages, a low base catch rate makes for a tough capture. You might want to get its health even lower, maybe by checking out a good IV calculator to plan your team’s moves.

How to Use This catch rate calculator gen 9

Using this calculator is a simple, step-by-step process designed to give you fast and accurate results.

1. Enter Base Catch Rate: Find the Pokémon’s species catch rate online (Bulbapedia and Serebii are great resources) and enter it.
2. Input HP Values: Enter the Pokémon’s maximum and current HP. The green-to-red HP bar in the game gives you a visual clue, but for best results, use moves like False Swipe to know the exact HP (1).
3. Select Your Poké Ball: Choose the ball you are using from the dropdown menu. Remember to select “Quick Ball” only if it’s the very first turn of battle.
4. Set Status Condition: If the Pokémon is asleep, frozen, paralyzed, poisoned, or burned, select the appropriate option. This provides a significant boost.
5. Calculate and Interpret: Click the “Calculate” button. The primary result shows your overall percentage chance to catch the Pokémon. The intermediate values show the ‘a’ and ‘b’ variables from the formula, giving you a deeper look into the mechanics.

After calculating, you can use the chart to see how much your odds would improve if you lowered the Pokémon’s HP further. This is crucial when deciding if you should risk another attack. Understanding these factors is as important as using an EV tracker for competitive training.

Key Factors That Affect Catch Rate in Gen 9

• HP Ratio: The single most important factor you can control. The lower the Pokémon’s current HP is relative to its maximum HP, the higher the catch rate. This is why moves like False Swipe are invaluable.
• Base Catch Rate: An unchangeable value tied to the Pokémon species. Legendary Pokémon have very low rates (e.g., 3), while common Pokémon have high rates (e.g., 255).
• Poké Ball Bonus: Different balls have different multipliers. Using the right ball for the situation (like a Dusk Ball at night or a Net Ball on a Bug-type) is a key strategy.
• Status Conditions: Inflicting a non-volatile status condition is one of the best ways to improve your odds. Sleep and Freeze provide a 2.5x bonus, which is massive.
• Critical Capture: In Gen 9, there’s a chance for a “Critical Capture,” which skips most of the math and greatly increases the catch chance. The more Pokémon species you’ve caught for your Pokédex, the higher your critical capture rate becomes.
• Level Modifiers: While less of a factor than in some past generations, certain balls like the Level Ball and Nest Ball still rely on the level difference between your Pokémon and the wild one. For help with leveling, see our breeding guide.

Frequently Asked Questions (FAQ)

Does HP matter more than status?

Both are critical. Getting a Pokémon to 1 HP provides a nearly 3x multiplier to the formula’s first part. Putting it to sleep adds another 2.5x multiplier on top of that. Doing both is the ideal strategy.

Is a Quick Ball on Turn 1 always the best?

With its 5x multiplier, it’s one of the strongest opening moves, especially on Pokémon with medium-to-high catch rates. For legendary Pokémon with very low rates, the boost may not be enough to secure a catch, and a prolonged battle with status and low HP will yield better odds. Using a starter Pokémon with False Swipe is a great combo.

What’s the difference between Paralyzed and Asleep?

Asleep (and Frozen) provides a much larger bonus (2.5x) than Paralysis, Poison, or Burn (1.5x). If you have a choice, always go for sleep.

Why is the catch rate for some Pokémon 100%?

If the initial ‘a’ value in the formula is 255 or higher, the game doesn’t need to perform any shake checks. It results in a guaranteed capture. This is common for weak Pokémon at 1 HP in a decent ball.

Does my Pokémon’s level matter?

In general for Gen 9, no. The old modifier based on your Pokémon’s level being higher than the wild one’s was removed. The only exceptions are for specific Poké Balls like the Level Ball.

What is a “Critical Capture”?

It’s a random event where the Poké Ball only shakes once before capturing the Pokémon. The animation is faster and the throw makes a whistling noise. The chance of this happening increases as you complete your Pokédex. This calculator shows the base probability, but a critical capture can make it even higher.

Where can I find Legendary Pokémon?

You can find their locations in our comprehensive legendary Pokémon locations guide.

Does this work for Tera Raid Battles?

No. Pokémon in Tera Raid Battles in Scarlet and Violet have a 100% catch rate, as long as you defeat them. You can use any ball you like for aesthetic purposes.

Related Tools and Internal Resources

Enhance your Pokémon journey with these other powerful tools and guides:

• IV Calculator: Discover the hidden potential of your Pokémon after you’ve caught them.
• EV Tracker: Optimize your Pokémon for competitive battles by tracking their Effort Values.
• Pokémon Breeding Guide: Learn the ins and outs of breeding for perfect Pokémon in Generation 9.
• Fuecoco Pokédex Entry: See stats and info for one of Paldea’s favorite starters.