Pokémon Catch Rate Calculator

Overall Catch Probability:

–%

Shake Probabilities will appear here.

Catch Probability Chart

A visual breakdown of the probability for the Poké Ball to shake 0, 1, 2, or 3 times before capture, and the final capture chance.

What is a pokemon calculator catch rate?

A Pokémon’s catch rate is a hidden value, an integer from 3 to 255, that determines how difficult it is to capture that species of Pokémon. When you use a pokemon calculator catch rate, you are using a tool that applies the game’s complex formula to this base value, along with several other factors, to find the true probability of a successful capture. A higher base catch rate means the Pokémon is easier to catch. For example, a common Pokémon like Caterpie has a catch rate of 255, while a legendary Pokémon like Mewtwo has a catch rate of just 3.

This calculator is not for Pokémon GO, but for the core series games (Generation III onwards). The formula takes into account the Pokémon’s current HP, any status conditions, and the type of Poké Ball used. Understanding these mechanics is key to becoming a more efficient Pokémon trainer and not wasting valuable Poké Balls.

The Pokémon Catch Rate Formula and Explanation

The core series games from Generation III to IX use a specific, multi-step formula to determine if a Pokémon is caught. Our pokemon calculator catch rate simplifies this process for you. Here is a breakdown of the formula.

First, a value, often called ‘a’, is calculated:

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

This value ‘a’ is a modified catch rate. If ‘a’ is 255 or greater, the capture is guaranteed. If not, this value is used in a “shake check” formula to determine the probability of the ball shaking and ultimately capturing the Pokémon.

The probability of passing a single shake check is roughly derived from ‘a’. The final catch probability is the chance of passing four consecutive shake checks. This is why even with a high chance, a Pokémon can still break out after one, two, or three shakes.

Formula Variables

Variable	Meaning	Unit / Type	Typical Range
MaxHP	The Pokémon’s maximum Hit Points.	Integer	10 – 714
CurrentHP	The Pokémon’s current Hit Points.	Integer	1 – MaxHP
BaseRate	The Pokémon species’ inherent catch rate.	Integer	3 (hardest) – 255 (easiest)
BallBonus	A multiplier from the Poké Ball used.	Multiplier (Decimal)	1x (Poké Ball) to 5x (Quick Ball, Turn 1)
StatusBonus	A multiplier for non-volatile status conditions.	Multiplier (Decimal)	1x (None), 1.5x (Paralyze/Poison/Burn), 2.5x (Sleep/Freeze)

Practical Examples

Example 1: Catching an early-game Pokémon

Imagine you encounter a Pidgey (Base Rate: 255) at level 3 with 20 Max HP. You weaken it to 5 HP and throw a standard Poké Ball.

• Inputs: Base Rate=255, MaxHP=20, CurrentHP=5, Ball=1x, Status=1x
• Result: The catch chance is extremely high, likely over 50%. The pokemon calculator catch rate would show a very high probability of success.

Example 2: Catching a Legendary Pokémon

Now, consider the challenge of catching Zapdos (Base Rate: 3) with 250 Max HP. You manage to get its health down to 1 HP using False Swipe and put it to sleep. You use an Ultra Ball.

• Inputs: Base Rate=3, MaxHP=250, CurrentHP=1, Ball=2x, Status=2.5x
• Result: Even under these ideal conditions, the catch rate is very low. The calculator would show a probability likely around 5-10% per ball. This demonstrates why catching legendaries requires patience and many Ultra Balls.

How to Use This Pokémon Catch Rate Calculator

Using this tool is straightforward. Follow these steps to determine your capture odds:

1. Enter the Base Catch Rate: Find the Pokémon’s base catch rate online (e.g., Bulbapedia or Serebii) and enter it.
2. Input HP Values: Enter the Pokémon’s maximum HP and its current HP. The lower the current HP, the better your chances.
3. Select the Poké Ball: Choose the ball you are using from the dropdown menu. The calculator will apply the correct bonus.
4. Select Status Condition: If the Pokémon is asleep, frozen, paralyzed, poisoned, or burned, select the appropriate condition. This gives a significant boost.
5. Interpret the Results: The calculator instantly shows the final catch probability as a percentage. The bar chart provides a visual breakdown of the shake checks, helping you understand why a Pokémon might break free.

Key Factors That Affect Pokémon Catch Rate

Several critical factors influence the final calculation. Optimizing these is the key to successful captures.

• Health: The single most important controllable factor. Reducing a Pokémon’s HP to 1 (e.g., with False Swipe) provides the maximum possible health-based bonus.
• Status Conditions: Applying a status condition is crucial, especially for difficult Pokémon. Sleep and Freeze provide a 2.5x bonus, making them far superior to Paralysis, Poison, or Burn (1.5x bonus).
• Poké Ball Choice: Using the right ball for the situation is vital. While Ultra Balls are strong general-purpose options, situational balls like Dusk Balls (in caves/at night) or Net Balls (for Bug/Water types) can be even better.
• Base Catch Rate: This is an unchangeable property of the Pokémon species. You can’t alter it, but knowing it helps you prepare for a tough capture.
• Pokémon’s Level: In modern games (Gen V+), the Pokémon’s level does *not* directly affect the main catch formula, a common misconception. However, some Poké Balls like the Nest Ball have effects that are dependent on the target’s level.
• Critical Capture: Sometimes, the ball will shake only once and immediately capture the Pokémon. This is a “Critical Capture,” a random event with its own calculation that provides a much higher chance of success. This calculator focuses on the standard catch mechanics.

Frequently Asked Questions (FAQ)

What is the difference between this and a Pokémon GO catch rate?

Pokémon GO uses a completely different, simpler system based on a target ring, throw bonuses (Nice, Great, Excellent), curveballs, and berries. This calculator is for the core series games only.

Why did the ball shake three times and still fail?

The game performs four “shake checks.” Passing the first three causes the ball to shake three times. You must pass the fourth check for a successful capture. Failing the fourth check is what causes the Pokémon to break out after three shakes.

Is a catch ever guaranteed?

Yes. Using a Master Ball guarantees a catch. Also, if the formula’s ‘a’ value reaches 255 or more (possible with weak Pokémon and strong bonuses), the capture is guaranteed without needing a Master Ball.

Does the Pokémon’s level matter?

For the main formula in Gen V+, no. A Level 100 Zapdos has the same base catch rate as a Level 50 Zapdos. The only exception is when using level-dependent balls like the Nest Ball.

Which status condition is best for catching?

Sleep and Freeze are equally the best, providing a 2.5x bonus. Paralysis, Poison, and Burn are next, with a 1.5x bonus.

What is the lowest possible catch rate?

The lowest base catch rate for any catchable Pokémon is 3. This is shared by most legendary and mythical Pokémon.

Does a move like False Swipe really help?

Absolutely. It guarantees the Pokémon will have 1 HP remaining, which maximizes the HP factor in the catch rate formula and dramatically increases your chances.

Are Ultra Balls always better than Great Balls?

Yes, in a direct comparison with no other factors, an Ultra Ball (2x bonus) is always better than a Great Ball (1.5x bonus). However, a situational ball like a Dusk Ball (3.5x bonus at night) can be much better than an Ultra Ball in the right context.

Related Tools and Internal Resources

If you found this pokemon calculator catch rate useful, check out our other strategy tools:

• IV Calculator – Discover the hidden potential of your Pokémon.
• EV Training Guide – Learn how to optimize your Pokémon’s stats for competitive battles.
• Shiny Odds Calculator – Calculate your chances of finding a rare shiny Pokémon.
• Damage Calculator – See how much damage your moves will do in battle.
• Type Coverage Checker – Build a team with the best offensive and defensive type matchups.
• Breeding Guide – Master the art of Pokémon breeding to get the perfect nature and abilities.