Gen V Catch Rate Calculator
Accurately calculate your chances of catching any Pokémon in Generation V (Black, White, Black 2, White 2).
Gen V Catch Rate Calculator
Catch Rate Results
What is Gen V Catch Rate?
The "Gen V Catch Rate" refers to the probability of successfully catching a wild Pokémon in the Generation V core series games: Pokémon Black, Pokémon White, Pokémon Black 2, and Pokémon White 2. Unlike earlier generations, Gen V introduced a more intricate formula that considers a wider range of factors beyond just the Pokémon's base catch rate and the ball used. Understanding these mechanics is crucial for efficient shiny hunting, team building, and completing the Pokédex.
Who should use this calculator? Any trainer playing through the Sinnoh region or engaging in post-game content where capturing specific Pokémon is a goal. This includes shiny hunters, players aiming for perfect IVs by resetting for specific Pokémon, or those who simply want to maximize their chances of catching rare or legendary Pokémon.
Common Misunderstandings: Many players assume a higher base catch rate or a better ball type directly translates to a linear increase in catch chance. However, factors like Pokémon level, status conditions, and specific ball bonuses (like Timer or Repeat Balls) can significantly alter the final probability in non-obvious ways. The Gen V formula is notoriously complex, making manual calculation challenging and error-prone.
Gen V Catch Rate Formula and Explanation
The Gen V catch formula can be summarized as follows:
Catch Rate = ( ( ( (3 * MaxHP - 2 * CurrentHP) * BaseCatchRate * BallBonus ) / ( 3 * MaxHP ) ) * StatusMultiplier * AssistModeMultiplier ) / 255
This value, let's call it A, is then used to determine shakes. A shake happens if:
Shake = A * ShakeModifier / 16 (where ShakeModifier depends on the number of shakes)
The probability of catching the Pokémon is directly tied to the number of successful shakes. Four shakes mean a guaranteed catch.
Variables:
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
BaseCatchRate |
The Pokémon's inherent catchability. | Unitless (0-255) | 1-255 |
MaxHP |
The Pokémon's maximum HP at its current level. | HP Points | Varies greatly by Pokémon and Level |
CurrentHP |
The Pokémon's current HP. | HP Points | 0 to MaxHP |
BallBonus |
The multiplier provided by the chosen Poké Ball. | Unitless Multiplier | 0.5 (Great Ball) to 2.0 (Ultra Ball), 3.0 (Master Ball) or Custom Bonus |
StatusMultiplier |
A multiplier based on the Pokémon's status condition. | Unitless Multiplier | 1.0 (None), 1.5 (Sleep/Freeze), 2.0 (Poison/Burn/Paralysis) |
AssistModeMultiplier |
A multiplier if Assist Mode is active (Black 2/White 2). | Unitless Multiplier | 1.0 (Off), 0.5 (On) |
ShakeModifier |
Determines shake animation sequences. | Unitless | Varies based on A value and specific shake thresholds. |
Practical Examples
Example 1: Catching a standard Pokémon
Scenario: You encounter a Level 50 Gigalith (Base Catch Rate: 45) with full HP. You are using a standard Great Ball (Ball Bonus: 2.0) and the Pokémon has no status condition (Status Multiplier: 1.0). Assist Mode is off (Multiplier: 1.0).
- Pokémon Level: 50
- Base Catch Rate: 45
- Max HP (at Level 50): ~150 (This is an estimate for demonstration)
- Current HP: 150
- Ball Used: Great Ball (Ball Bonus: 2.0)
- Status Condition: None (Multiplier: 1.0)
- Assist Mode: Off (Multiplier: 1.0)
Result: Using the calculator, the estimated Catch Rate Percentage is approximately 25.5%. The Shake Modifier might lead to 2-3 shakes, indicating a moderate chance.
Example 2: Catching a weakened Pokémon with a status effect
Scenario: You encounter a Level 30 Reuniclus (Base Catch Rate: 50) with very low HP (1/10th of Max HP). It is Paralyzed (Status Multiplier: 2.0). You are using an Ultra Ball (Ball Bonus: 2.5) and Assist Mode is off (Multiplier: 1.0).
- Pokémon Level: 30
- Base Catch Rate: 50
- Max HP (at Level 30): ~100 (Estimate)
- Current HP: 10
- Ball Used: Ultra Ball (Ball Bonus: 2.5)
- Status Condition: Paralysis (Multiplier: 2.0)
- Assist Mode: Off (Multiplier: 1.0)
Result: With the Pokémon weakened and paralyzed, the calculator shows a significantly higher Catch Rate Percentage, perhaps around 60-70%. This scenario greatly increases the likelihood of capture, potentially requiring fewer balls.
How to Use This Gen V Catch Rate Calculator
- Identify Pokémon Details: Find the wild Pokémon's Base Catch Rate (available in online Pokédexes).
- Determine Level: Note the level of the wild Pokémon you encountered.
- Check Status: Observe if the Pokémon has any status conditions (Sleep, Freeze, Poison, Burn, Paralysis).
- Select Ball: Choose the Poké Ball you intend to use. Note that some balls have specific conditions (e.g., Dusk Ball is better at night or in caves). If using a ball like Timer or Repeat, you'll need to input its bonus separately.
- Input Custom Bonus: If using a ball like Timer, Repeat, or Luxury Ball where the bonus depends on game conditions, input the relevant bonus value. Otherwise, leave it at 0.
- Consider Assist Mode: If playing Black 2 or White 2, indicate if Assist Mode is active.
- Click "Calculate": The calculator will display the modified catch rate, shake modifier, and an estimated catch rate percentage.
- Interpret Results: A higher percentage means a greater chance of catching the Pokémon with a single ball. The "Estimated Balls Needed" provides a rough idea of how many attempts you might require on average.
Key Factors That Affect Gen V Catch Rate
- Base Catch Rate: Legendary Pokémon and certain rare species have inherently lower base catch rates, making them harder to capture regardless of other factors.
- Pokémon Level: While not directly in the simplified Gen V formula, the Pokémon's level influences its Max HP, which is a significant component of the calculation. Higher HP generally means a slightly lower catch rate modifier.
- Current HP: This is one of the most impactful factors. The lower the Pokémon's current HP, the higher your catch rate. Targeting the red zone significantly boosts your chances.
- Status Conditions: Inflicting Sleep or Freeze provides the highest multiplier, followed by Poison, Burn, or Paralysis. This makes status moves invaluable for capture attempts.
- Poké Ball Type: Different balls offer varying base multipliers. Master Balls are an exception with a guaranteed catch. Specialized balls like Dusk, Timer, Repeat, and Nest Balls provide situational or conditional bonuses that can drastically improve odds.
- Assist Mode (B2/W2): This mode increases catch rates but makes battles easier overall. If active, it significantly reduces your catch probability for any given ball.
- Number of Shakes: The internal calculation determines how many times the ball "shakes" before a potential catch. More shakes indicate a higher probability, with four shakes guaranteeing capture.
- Custom Ball Bonuses: Balls like the Timer Ball offer increasing bonuses for each turn the battle lasts, while Repeat Balls are highly effective if you've already caught that species.
FAQ
A: The Base Catch Rate is a fixed value for each Pokémon species. The Modified Catch Rate is the result after applying all in-game factors like HP, status, ball type, and level.
A: Yes, reducing the Pokémon's Current HP is one of the most effective ways to increase your catch rate in Gen V. Getting it into the red HP zone provides a substantial boost.
A: Timer Balls give an increasing bonus the longer the battle lasts. The bonus starts low but can reach up to a 3.0x multiplier after 30 turns, making them very effective for lengthy capture attempts.
A: Legendaries often have very low base catch rates. While Ultra Balls and Dusk Balls (if applicable) help, status conditions (especially Sleep/Freeze) and weakening them significantly are crucial. For guaranteed capture, the Master Ball is the only option.
A: Yes, Dusk Balls still provide a bonus multiplier (often 3.0x) regardless of time or location, making them one of the most consistently powerful balls available in Gen V, comparable to the Master Ball's effectiveness if conditions aren't met for other specialized balls.
A: Try weakening the Pokémon further, inflicting a status condition (Sleep/Freeze is best), using a better ball (like Ultra or Dusk), or increasing the turn count for Timer Balls. Ensure you're not in Assist Mode if maximum catch chance is desired.
A: Yes, Shiny Pokémon have the same base catch rate as their regular counterparts. This calculator accurately reflects your chances of catching them.
A: These abilities prevent status conditions, which will negatively impact your catch rate. The calculator assumes you can inflict status if you choose that option; if the Pokémon has an ability preventing it, your actual chance will be lower than calculated if you select a status condition.
A: The "Shake Modifier" is an internal value derived from the Modified Catch Rate. It dictates how many times the ball shakes before the catch attempt concludes. More shakes indicate a higher probability. Four shakes result in a guaranteed capture.