Pokemon Ultra Moon Catch Rate Calculator

Estimate your chances of successfully catching any Pokémon in Ultra Moon.

Catch Rate Inputs

Your Catch Rate Results

The catch rate is influenced by the Pokémon's base stats, its current HP, status effects, and the type of Poké Ball used. A higher percentage means a greater chance of success.

Catch Rate Calculation Breakdown

Factors Affecting Catch Rate in Pokémon Ultra Moon

Factor	Description	Value/Modifier
Base Catch Rate	The Pokémon's inherent catchability.	—
Level	The wild Pokémon's level. Higher levels can decrease catch rate.	—
HP Modifier	Based on the ratio of current HP to max HP. Lower HP significantly increases catch rate.	—
Status Modifier	Sleep/Freeze, Badly Poisoned, Poison, Paralysis, Burn each offer a multiplier.	—
Ball Modifier	Specific to the Poké Ball used (e.g., Great Ball, Net Ball, Timer Ball).	—
Final Catch Rate Value	The calculated value before converting to a percentage.	—
Final Catch Rate %	The percentage chance of the ball working.	—

Catch Rate Visualizer

The Pokémon Ultra Moon catch rate calculator is a specialized tool designed to estimate the probability of successfully capturing a wild Pokémon encountered in the games Pokémon Ultra Moon and Pokémon Ultra Sun. These games, set in the Alola region, feature a complex algorithm that determines if a thrown Poké Ball will succeed. This calculator simplifies that process, allowing trainers to input key variables and receive a precise percentage chance of capture. Understanding and using this calculator can significantly improve a trainer's ability to fill out their Pokédex, acquire specific Pokémon with desired natures, or simply make the process of catching Pokémon less frustrating.

Who Should Use This Calculator?

This calculator is invaluable for a wide range of Pokémon trainers:

• Completionists: Trainers aiming to catch every Pokémon available in the game.
• Shiny Hunters: While this calculator doesn't directly factor in shininess, knowing the base catch rate helps when dealing with rare Pokémon that might also be shiny.
• Competitive Battlers: Trainers looking to catch specific Pokémon with optimal stats (IVs) and natures, often requiring multiple attempts.
• New Players: Those unfamiliar with the intricacies of Pokémon capture mechanics can use it to learn.
• Frustrated Trainers: Anyone who has experienced the agony of a Pokémon breaking out of multiple Ultra Balls, only to be caught by a single Poké Ball later.

Common Misunderstandings About Catch Rate

Several myths surround Pokémon catch rates. This calculator helps clarify them:

• "All Balls are Equal": This is false. Different balls (Great Ball, Ultra Ball, Net Ball, etc.) have distinct multipliers.
• "Only HP Matters": While crucial, HP is just one factor. Status conditions and ball type significantly alter the odds.
• "Catch Rate is Fixed": The base catch rate is fixed per species, but the actual *effective* catch rate changes dynamically based on in-game conditions.
• "Higher Level = Lower Catch Rate": While not directly a multiplier, higher-level Pokémon often have higher HP, which indirectly lowers the catch rate if not managed well.

Pokémon Ultra Moon Catch Rate Formula and Explanation

The core of the Pokémon Ultra Moon catch rate calculation involves several steps. The general formula can be represented as:

Effective Catch Rate = ( ( (3 * MaxHP – 2 * CurrentHP) * BaseCatchRate * BallModifier * StatusModifier ) / (3 * MaxHP) )

This result is then further processed through a series of random checks, but for estimation, we often focus on the value derived from this formula. For Ultra Moon, the actual capture success depends on a random number generated against this modified value, with several factors influencing the "shake" count of the Poké Ball.

Formula Breakdown and Variables:

• Base Catch Rate (BCR): The Pokémon's inherent catchability, a value from 0 to 255.
• Max HP (MHP): The wild Pokémon's maximum Hit Points at its current level.
• Current HP (CHP): The wild Pokémon's current Hit Points. Lower is better for catching.
• HP Modifier (HP_Mod): Calculated as (3 * MHP - 2 * CHP). This term heavily favors Pokémon with low Current HP.
• Ball Modifier (Ball_Mod): A multiplier specific to the Poké Ball used. Different balls have different multipliers. Master Ball has a modifier of 255, effectively guaranteeing a catch (unless specific game mechanics override it).
• Status Modifier (Status_Mod): A multiplier based on the status condition of the wild Pokémon.
• None: 1
• Sleep/Freeze: 2
• Badly Poisoned: 1.5
• Poison/Burn/Paralysis: 1.5 (In Gen 7, these are 1.5x effective, but the formula might use slightly different values or interpretation)

Variables Table

Variables Used in Catch Rate Calculation

Variable	Meaning	Unit	Typical Range
Pokémon Level	Level of the wild Pokémon	Unitless (Integer)	1 – 100
Base Catch Rate	Inherent catchability of the species	0 – 255	0 – 255
Current HP	Wild Pokémon's current health points	HP Points	1 – Max HP
Max HP	Wild Pokémon's maximum health points	HP Points	Varies by Pokémon and Level
Status Condition	Effect on the wild Pokémon (Sleep, Paralysis, etc.)	Categorical (Multiplier)	0 (None) to 5 (Burn)
Ball Modifier	Multiplier from the chosen Poké Ball	Multiplier (Decimal/Integer)	0.5 (e.g., some Timer Balls) to 255 (Master Ball)
Turn Number	For Timer Balls, increases effectiveness over time	Integer	1+

Practical Examples

Let's illustrate with a couple of scenarios:

Example 1: Catching a Level 50 Gengar

• Pokémon: Gengar
• Level: 50
• Base Catch Rate: 45
• Max HP: 130 (at Level 50)
• Current HP: 1 (fainted status)
• Status Condition: Sleep (Multiplier: 2)
• Ball Type: Ultra Ball (Modifier: 1.5)

Calculation:

• HP Modifier Term: (3 * 130 - 2 * 1) = 390 - 2 = 388
• Modified Catch Rate Value: ( (388 * 45 * 1.5 * 2) / 130 ) ≈ 427.84
• Final Catch Rate: This value, when processed through the game's RNG, gives a very high probability. For estimation, we often consider values above ~130 as highly likely.

Result: With low HP and a sleep status, even an Ultra Ball has a very high chance of catching this Gengar.

Example 2: Catching a Level 20 Zubat

• Pokémon: Zubat
• Level: 20
• Base Catch Rate: 255
• Max HP: 55 (at Level 20)
• Current HP: 55 (Full HP)
• Status Condition: None (Multiplier: 1)
• Ball Type: Poké Ball (Modifier: 1)

Calculation:

• HP Modifier Term: (3 * 55 - 2 * 55) = 165 - 110 = 55
• Modified Catch Rate Value: ( (55 * 255 * 1 * 1) / 55 ) = 255
• Final Catch Rate: This value of 255 is extremely high, indicating a near-guaranteed catch with a standard Poké Ball.

Result: Zubats are notoriously easy to catch, especially at full HP with a standard Poké Ball.

Example 3: Timer Ball Effectiveness

• Pokémon: Magikarp
• Level: 10
• Base Catch Rate: 255
• Max HP: 30 (at Level 10)
• Current HP: 15 (Half HP)
• Status Condition: None (Multiplier: 1)
• Ball Type: Timer Ball (Modifier varies by turn)
• Turn Number: 10

Timer Ball Modifier (approximate for Gen 7): At turn 10, the modifier is around 2.5x.

Calculation:

• HP Modifier Term: (3 * 30 - 2 * 15) = 90 - 30 = 60
• Modified Catch Rate Value: ( (60 * 255 * 2.5 * 1) / 30 ) ≈ 1275
• Final Catch Rate: Extremely high due to the Timer Ball's effectiveness over multiple turns.

Result: A Timer Ball used after 10 turns significantly boosts the catch rate, making it highly effective even against Pokémon with moderate HP.

How to Use This Pokémon Ultra Moon Catch Rate Calculator

1. Identify the Pokémon: Note the species of the wild Pokémon you wish to catch.
2. Find its Base Catch Rate: Look up the Pokémon's species on a reliable Pokémon database (like Serebii, Bulbapedia) to find its Base Catch Rate (a number between 0 and 255).
3. Determine its Level: Note the level of the wild Pokémon.
4. Check its HP: Observe the wild Pokémon's current HP and its maximum HP at that level. Aim to reduce the current HP as much as possible without fainting it.
5. Note Status Conditions: Check if the Pokémon has any status effects (Sleep, Paralysis, Burn, Poison, Freeze).
6. Select your Ball: Choose the Poké Ball you intend to use from the dropdown menu. If using a custom ball or one not listed, use the "Custom Ball Modifier" field.
7. Enter Turn Number (If Applicable): If using a Timer Ball, input the current turn number.
8. Input Values: Enter all the gathered information into the corresponding fields of the calculator.
9. Click "Calculate": The calculator will output the estimated catch rate percentage and intermediate values.
10. Interpret Results: A higher percentage indicates a better chance. Use this information to decide which ball to use or if you need to inflict status or lower HP further.

Key Factors That Affect Catch Rate in Ultra Moon

1. Base Catch Rate: This is the most fundamental factor, intrinsic to the Pokémon species. Legendaries often have very low base catch rates (e.g., 3), while common Pokémon like Magikarp have the maximum (255).
2. Current HP vs. Max HP: The closer the wild Pokémon's current HP is to zero, the higher the catch rate. Having it at 1 HP provides the maximum benefit from this factor.
3. Status Conditions: Inflicting Sleep or Freeze doubles your catch rate, while Poison, Burn, or Paralysis increase it by 50%. This is a significant boost and often worth inflicting.
4. Poké Ball Type: Different balls offer different multipliers. Ultra Balls are a standard 1.5x, Great Balls are 1.5x, but specialized balls like the Net Ball (2x against Bug/Water types) or Dive Ball (3.5x when underwater) can be far more effective in specific situations. Timer Balls become increasingly potent with each turn.
5. Level (Indirectly): While Level itself isn't a direct multiplier in the core formula for Gen 7, higher-level Pokémon generally have higher Max HP. Since the HP Modifier is (3 * MaxHP - 2 * CurrentHP), a higher MaxHP (from higher level) can sometimes slightly decrease the catch rate if HP isn't proportionally reduced. However, the primary impact of level is its effect on Max HP.
6. Friend Guard / False Swipe: While not directly in the calculator's formula inputs, using moves like False Swipe guarantees the target stays at 1 HP, maximizing the HP modifier. Abilities like Friend Guard (if the wild Pokémon had it, which is rare) could theoretically reduce damage taken, indirectly affecting how easy it is to get it to low HP.
7. Specific Game Mechanics: Ultra Wormholes and specific legendary encounters might have unique catch rate modifiers or limitations not covered by standard formulas.

Frequently Asked Questions (FAQ)

1. Q: Does the calculator work for Pokémon Sun and Moon too?
   A: Yes, the catch rate mechanics in Pokémon Sun and Moon are largely identical to Ultra Moon, so this calculator should provide accurate estimations for those games as well.
2. Q: What is the difference between the "Modified Catch Rate Value" and the "Estimated Catch Rate %"?
   A: The "Modified Catch Rate Value" is the raw number calculated from the formula. The "Estimated Catch Rate %" is a simplified representation of how likely that value is to result in a successful catch, considering the game's internal RNG checks. Values above ~130 in the Modified Catch Rate are generally considered very likely to succeed.
3. Q: Why is my Master Ball not working?
   A: The Master Ball has a modifier of 255, making it a guaranteed catch in almost all standard scenarios. If it fails, it might be due to a rare bug, a specific scripted event where capture is disallowed, or you might be using a heavily modified game.
4. Q: How does the Timer Ball work exactly?
   A: The Timer Ball's effectiveness increases with each turn the battle has lasted. In Generation 7 (Sun, Moon, Ultra Sun, Ultra Moon), its modifier starts low and increases up to a maximum of 4x at 10 turns or more.
5. Q: Can I use this for Pokémon GO?
   A: No, Pokémon GO has a completely different and much simpler catch rate system that does not use these formulas.
6. Q: What does "Badly Poisoned" mean for the modifier?
   A: In older generations, "Badly Poisoned" (Toxic) applied a 2x modifier. In Gen 7, it acts as a 1.5x modifier, similar to regular Poison, Burn, or Paralysis.
7. Q: Is there a way to guarantee a catch without a Master Ball?
   A: No, there's no guaranteed method without a Master Ball. However, inflicting Sleep/Freeze, reducing HP to 1 with False Swipe, and using the most effective ball for the situation (like a Timer Ball after several turns, or a Net Ball/Dive Ball for specific types) drastically increases your odds.
8. Q: My calculated percentage is very low, like 1%. What does that mean?
   A: It means your chances are slim. You'll likely need to retry, perhaps by fainting the Pokémon and reviving it, inflicting a status condition, or switching to a more powerful Poké Ball if available.

Related Tools and Resources

Explore More Pokémon Tools

• Pokémon Ultra Moon IV Calculator: Determine the potential of your caught Pokémon.
• Pokémon Ultra Moon Natures Guide: Understand how Natures affect stats.
• Pokémon Ultra Moon EV Training Guide: Learn how to maximize Effort Values.
• Best Poké Balls Guide: A detailed look at each Poké Ball's effectiveness.
• Status Conditions Explained: Deep dive into battle effects.
• Pokémon Ultra Moon Shiny Value Calculator: (If applicable to specific ROM hacking/trading)