Pokemon Weakness Calculator

Discover your Pokémon's vulnerabilities and resistances!

Enter Pokémon Type(s)

What is Pokémon Type Weakness?

In the world of Pokémon, every creature possesses one or two elemental types (e.g., Fire, Water, Grass, Electric). These types dictate how effectively certain attacks will land against them. Understanding type matchups is fundamental to strategic Pokémon battling. A Pokémon's weaknesses are the types of attacks that deal super effective damage, meaning they hit for double damage (2x).

Conversely, some types are resistant to certain attacks, taking half damage (0.5x), and a few have complete immunity, taking no damage (0x). This intricate system creates a rock-paper-scissors dynamic across all 18 types, making team composition and move selection crucial for success in battles, from casual play to competitive tournaments.

Who should use this calculator?

• New trainers learning the game mechanics.
• Experienced players strategizing for battles.
• Anyone curious about specific Pokémon matchups.
• Players building teams for raids or competitive formats.

Common Misunderstandings:

• Confusing Super Effective (2x) with Double Weakness (4x): Some Pokémon with dual typings can be weak to a single type, resulting in quadruple damage (4x). This calculator clarifies those instances.
• Forgetting Immunities: Certain type combinations grant immunity to specific attack types, which can be a powerful defensive advantage.
• Overlooking Resistances: While weaknesses are critical, understanding resistances (0.5x damage) is equally important for predicting battle outcomes.

Pokémon Type Weakness Formula and Explanation

The effectiveness of an attack against a Pokémon is determined by comparing the attacker's move type with the defender's type(s). The damage multiplier is calculated by multiplying the individual multipliers for each of the defender's types. The formula can be conceptually represented as:

Damage Multiplier = Multiplier(Move Type vs. Type 1) × Multiplier(Move Type vs. Type 2)

Where:

• Multiplier(Attack Type vs. Defense Type) can be:
  • 2x (Super Effective)
  • 0.5x (Not Very Effective / Resistance)
  • 1x (Normally Effective)
  • 0x (Immune)
• If a Pokémon has only one type, the second multiplier is 1x.

This calculator automatically applies these rules to determine all weaknesses, resistances, and immunities for a given Pokémon type combination.

Type Effectiveness Chart Variables

Type Effectiveness Multipliers

Attack Type	vs. Normal	vs. Fire	vs. Water	vs. Grass	vs. Electric	vs. Ice	vs. Fighting	vs. Poison	vs. Ground	vs. Flying	vs. Psychic	vs. Bug	vs. Rock	vs. Ghost	vs. Dragon	vs. Steel	vs. Dark	vs. Fairy
Normal	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	0.5x	0x	1x	0.5x	1x	1x
Fire	1x	0.5x	0.5x	2x	1x	2x	1x	1x	1x	1x	1x	2x	0.5x	1x	0.5x	2x	1x	1x
Water	1x	2x	0.5x	0.5x	1x	1x	1x	1x	2x	1x	1x	1x	2x	1x	0.5x	1x	1x	1x
Grass	1x	0.5x	2x	0.5x	1x	1x	1x	0.5x	2x	0.5x	1x	0.5x	2x	1x	0.5x	0.5x	1x	1x
Electric	1x	1x	2x	0.5x	0.5x	1x	1x	1x	0x	2x	1x	1x	1x	1x	0.5x	1x	1x	1x
Ice	1x	0.5x	0.5x	2x	1x	0.5x	1x	1x	2x	2x	1x	1x	1x	1x	2x	0.5x	1x	1x
Fighting	2x	1x	1x	1x	1x	1x	1x	0.5x	1x	0.5x	0.5x	0.5x	2x	0x	1x	2x	2x	0.5x
Poison	1x	1x	1x	2x	1x	1x	1x	0.5x	0.5x	1x	1x	0.5x	0.5x	0.5x	1x	0x	1x	2x
Ground	1x	2x	1x	0.5x	2x	1x	1x	2x	1x	0x	1x	0.5x	2x	1x	1x	1x	1x	1x
Flying	1x	1x	1x	2x	0.5x	1x	2x	1x	1x	1x	1x	2x	0.5x	1x	1x	0.5x	1x	1x
Psychic	1x	1x	1x	1x	1x	1x	2x	2x	1x	1x	0.5x	1x	1x	1x	1x	0.5x	0x	1x
Bug	1x	0.5x	1x	2x	1x	1x	0.5x	0.5x	1x	0.5x	0.5x	1x	1x	0.5x	1x	0.5x	1x	0.5x
Rock	1x	2x	1x	1x	1x	2x	0.5x	1x	0.5x	2x	1x	2x	1x	1x	1x	0.5x	1x	1x
Ghost	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	2x	1x	1x	0.5x	1x
Dragon	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	1x	2x	0.5x	0x	0x
Steel	1x	0.5x	0.5x	1x	0.5x	2x	1x	0x	1x	1x	1x	1x	2x	1x	1x	0.5x	2x	2x
Dark	1x	1x	1x	1x	1x	1x	0.5x	1x	1x	1x	2x	1x	1x	2x	1x	1x	0.5x	0.5x
Fairy	1x	0.5x	1x	1x	1x	1x	2x	0.5x	1x	1x	1x	1x	1x	1x	2x	0.5x	2x	1x

Practical Examples

Let's see this calculator in action with some real Pokémon examples:

Example 1: Charizard (Fire/Flying)

Inputs:

• Primary Type: Fire
• Secondary Type: Flying

Analysis:

• Fire type is weak to Water (2x), Rock (2x), and Electric (2x).
• Flying type is weak to Rock (2x) and Electric (2x).
• Combining these:
  • Rock is hit by both types: Fire (0.5x) * Flying (2x) = 1x; BUT Fire (2x) * Flying (0.5x) = 1x. Wait, the table shows Rock is 2x vs Fire and 0.5x vs Flying. Let's re-evaluate. Fire attacks Rock (2x). Flying attacks Rock (0.5x). The calculator uses the individual type matchups to derive overall. A Rock move against Charizard would be: Fire Type (0.5x) * Flying Type (2x) = 1x. Hmm, this implies the calculator logic should check attack types vs Pokemon types. Let's reverse it for clarity.
  • Attacks Charizard (Fire/Flying) would be weak to:
    • Rock: Fire is weak to Rock (2x), Flying is weak to Rock (2x). Combined effect: 2x * 2x = 4x (Quad Weakness!).
    • Electric: Fire is weak to Electric (2x), Flying is neutral to Electric (1x). Combined effect: 2x * 1x = 2x (Super Effective).
    • Water: Fire is weak to Water (2x), Flying is neutral to Water (1x). Combined effect: 2x * 1x = 2x (Super Effective).
  • Resistances: Grass (Fire 0.5x, Flying 1x = 0.5x), Bug (Fire 0.5x, Flying 1x = 0.5x), Fighting (Fire 1x, Flying 0.5x = 0.5x), Ground (Fire 1x, Flying 0x = 0x).
  • Immunities: Ground (Flying is immune 0x).

Result: Charizard is Quad Weak to Rock-type attacks and takes Super Effective (2x) damage from Electric and Water attacks. It is immune to Ground attacks.

Example 2: Gengar (Ghost/Poison)

Inputs:

• Primary Type: Ghost
• Secondary Type: Poison

Analysis:

• Ghost type is weak to Ghost (2x) and Dark (2x).
• Poison type is weak to Ground (2x) and Psychic (2x).
• Combining these:
  • Psychic: Ghost is weak to Psychic (2x), Poison is weak to Psychic (2x). Combined effect: 2x * 2x = 4x (Quad Weakness!).
  • Ground: Ghost is neutral to Ground (1x), Poison is weak to Ground (2x). Combined effect: 1x * 2x = 2x (Super Effective).
  • Ghost: Ghost is weak to Ghost (2x), Poison is neutral to Ghost (1x). Combined effect: 2x * 1x = 2x (Super Effective).
  • Dark: Ghost is weak to Dark (2x), Poison is neutral to Dark (1x). Combined effect: 2x * 1x = 2x (Super Effective).
• Resistances: Bug (Ghost 0.5x, Poison 1x = 0.5x), Fairy (Ghost 0.5x, Poison 1x = 0.5x), Poison (Ghost 1x, Poison 0.5x = 0.5x).
• Immunities: Normal (Ghost is immune 0x), Fighting (Ghost is immune 0x).

Result: Gengar is Quad Weak to Psychic-type attacks and takes Super Effective (2x) damage from Ground, Ghost, and Dark attacks. It is immune to Normal and Fighting attacks.

How to Use This Pokémon Weakness Calculator

Using the Pokémon Weakness Calculator is simple and straightforward. Follow these steps to quickly determine a Pokémon's vulnerabilities:

1. Identify Pokémon Types: Determine the primary and, if applicable, the secondary type of the Pokémon you are interested in. You can find this information in your Pokédex, game menus, or online resources.
2. Select Primary Type: In the calculator, find the dropdown menu labeled "Primary Type" and select your Pokémon's main type from the list.
3. Select Secondary Type (Optional): If your Pokémon has a second type, use the "Secondary Type (Optional)" dropdown menu to select it. If it only has one type, leave this set to "– None –".
4. Calculate: Click the "Calculate Weaknesses" button.
5. Interpret Results: The calculator will display a summary of the types your Pokémon is weak against (taking 2x or 4x damage), resistant to (taking 0.5x damage), and immune to (taking 0x damage). The detailed breakdown provides a clearer picture of each matchup.

Selecting Correct Types: Always ensure you have the correct type(s) for the specific Pokémon. Some Pokémon have different forms or regional variants with different typings, which can significantly alter their weaknesses.

Interpreting the Results:

• Weaknesses (Super Effective): These are the types of moves you should generally avoid using against your Pokémon. A 4x weakness means the Pokémon takes massive damage from that type.
• Resistances (Not Very Effective): These are types of moves that your Pokémon takes reduced damage from, making them effective defensive matchups.
• Immunities: These types of moves deal no damage, offering complete protection.

Key Factors That Affect Pokémon Type Weaknesses

While the core type matchups are fixed, several factors can influence how effective a move is or how players strategize around weaknesses:

1. Dual Typing: This is the most significant factor. Pokémon with two types combine the strengths and weaknesses of both, leading to more complex interactions, including double weaknesses (4x) and resistances to multiple types.
2. Abilities: Many Pokémon possess unique Abilities that can alter type effectiveness. For example, Levitate makes Ground-type moves ineffective against a Pokémon, negating a potential Ground weakness.iasis can sometimes change a Pokémon's type, drastically altering its vulnerabilities.
3. STAB (Same-Type Attack Bonus): While not directly changing weaknesses, STAB boosts the power of moves that match the user's type. This means a Pokémon might deal significantly more damage with a move that targets an opponent's weakness if it also shares that type.
4. Move Coverage: A Pokémon might have a significant weakness, but if its opponents rarely carry moves of that type, the weakness becomes less relevant in practice. Strategic move selection is key.
5. Items: Certain held items can alter damage taken or dealt. For example, a type-reducing Berry (like a Sitrus Berry, although those restore HP) or an item that boosts a specific defensive stat can help mitigate damage from weaknesses. Plate items associated with Arceus can change its type.
6. Weather Conditions: While less common for direct type effectiveness, weather can influence move power (e.g., Fire moves are weaker in Rain, Water moves stronger). This indirectly affects battle outcomes where type matchups are already a factor.

Frequently Asked Questions (FAQ)

Q1: How is a 4x weakness calculated?

A 4x weakness occurs when a Pokémon has two types, and both types are weak to the same attacking type. For example, a Rock/Ground Pokémon is hit for 2x damage by both Rock and Ground moves. When attacking it with a Rock move, the Rock type takes 2x damage, and the Ground type takes 2x damage. The multipliers multiply: 2x * 2x = 4x damage.

Q2: What if a type is both super effective and resisted?

This can happen with dual-type Pokémon. For instance, a Fire/Dragon Pokémon attacked by a Water move: Water is Super Effective (2x) against Fire, but Not Very Effective (0.5x) against Dragon. The calculation is 2x * 0.5x = 1x. The move deals normal damage.

Q3: Does the calculator consider Pokémon Abilities?

No, this calculator focuses purely on the inherent type matchups based on the selected Pokémon types. Abilities like Levitate (Ground immunity) or Filter/Solid Rock (reducing super-effective damage) are not factored in.

Q4: How do immunities work?

An immunity means a specific type of attack deals 0x damage. For example, Ghost-type Pokémon are immune to Normal and Fighting-type attacks because the Ghost type inherently cancels them out. If a Pokémon has only one type that grants immunity, it is immune. If a Pokémon has dual types, and *either* type grants immunity to an attack, the Pokémon is immune (e.g., Ground immunity for Flying types).

Q5: What's the difference between "Weakness" and "Super Effective"?

In this context, they mean the same thing. A "weakness" refers to a type matchup where the attacking move deals 2x damage (Super Effective). A "double weakness" or "4x weakness" means the move deals 4x damage.

Q6: Can I calculate weaknesses for Mega Evolutions or specific forms?

This calculator works based on the standard 18 types. If a Mega Evolution or regional form has a different typing than its base form, you would need to select the correct types for that specific form to get accurate results.

Q7: What if I select the same type for both Primary and Secondary?

Selecting the same type twice doesn't change the outcome. For example, a single Fire-type Pokémon remains Fire-type, even if you select 'Fire' for both slots. The calculator effectively treats it as a single-type Pokémon. The result will show resistances/weaknesses associated with that single type.

Q8: Does this calculator cover all Pokémon generations?

Yes, this calculator uses the type chart established through all current Pokémon generations, including the introduction of the Fairy type.

Related Tools and Internal Resources

Explore these related resources for a deeper understanding of Pokémon battling and statistics:

• Pokémon Natures Explained: Learn how natures affect Pokémon stats, impacting their performance in battle.
• EV Training Guide: Discover how Effort Values (EVs) can be trained to optimize your Pokémon's stats.
• Competitive Pokémon Teambuilder: Use our advanced tool to construct balanced and effective teams for competitive play.
• Individual Values (IVs) Calculator: Understand how Individual Values contribute to a Pokémon's potential.
• Move Type Coverage Tool: Analyze which types a Pokémon's moveset can effectively hit.
• Pokémon Stats Calculator: Calculate your Pokémon's base stats based on level, nature, and IVs/EVs.