Pokémon Type Weakness Calculator

Analyze defensive type matchups for any Pokémon type combination.

What is a Pokémon Type Weakness Calculator?

A Pokémon Type Weakness Calculator is a specialized tool designed for Pokémon trainers and competitive players to quickly determine the defensive vulnerabilities and strengths of any given Pokémon based on its type or dual-type combination. In the world of Pokémon, every type has a unique set of interactions with other types, resulting in super-effective (double damage), not very effective (half damage), or no effect (immune) matchups. This calculator automates the process of checking these interactions.

When a Pokémon has two types, these multipliers combine. For instance, if both types are weak to an attack, the Pokémon takes quadruple (4x) damage. Conversely, if both types resist an attack, it only takes a quarter (0.25x) of the damage. This pokemon types weakness calculator handles all these multiplicative calculations for you, providing an instant summary of a Pokémon’s defensive profile.

Pokémon Type Matchup Formula and Explanation

The core of type effectiveness calculation is multiplication. Every attacking type has a damage multiplier against every defending type (2x for super-effective, 0.5x for not very effective, 1x for neutral, and 0x for immunity). For a dual-type Pokémon, you simply multiply the two multipliers together.

Final Damage Multiplier = Multiplier(Attacking Type vs Defending Type 1) × Multiplier(Attacking Type vs Defending Type 2)

This means a Rock/Ground type Pokémon (like Golem) takes 4x damage from Water attacks, because Water is super-effective against both Rock (2x) and Ground (2x), and 2 x 2 = 4. Our pokemon damage calculator can help with more advanced calculations.

Formula Variables

Variable	Meaning	Unit	Typical Range
Multiplier vs Type 1	The damage multiplier of an attack against the Pokémon’s first type.	Unitless (Multiplier)	0, 0.5, 1, 2
Multiplier vs Type 2	The damage multiplier of an attack against the Pokémon’s second type (if any).	Unitless (Multiplier)	0, 0.5, 1, 2
Final Multiplier	The combined damage multiplier for the dual-type.	Unitless (Multiplier)	0, 0.25, 0.5, 1, 2, 4

Practical Examples

Example 1: Single-Type Pokémon (Charizard – Fire/Flying)

• Inputs: Defending Type 1: Fire, Defending Type 2: Flying
• Analysis: We need to find types that are super-effective against either Fire or Flying. Rock is super-effective against both (2x against Fire, 2x against Flying), resulting in a major 4x weakness. Water and Electric are super-effective against one type and neutral to the other, resulting in a 2x weakness.
• Results:
  • Weaknesses: Rock (4x), Water (2x), Electric (2x)
  • Resistances: Fighting (0.5x), Steel (0.5x), Fire (0.5x), Fairy (0.5x), Bug (0.25x), Grass (0.25x)
  • Immunities: Ground

Example 2: Dual-Type Pokémon (Swampert – Water/Ground)

• Inputs: Defending Type 1: Water, Defending Type 2: Ground
• Analysis: This combination is famous for having only one weakness. Grass is super-effective against Water (2x) and Ground (2x), resulting in a huge 4x weakness. Its weakness to Electric is negated by its Ground immunity.
• Results:
  • Weaknesses: Grass (4x)
  • Resistances: Steel (0.5x), Rock (0.5x), Poison (0.5x), Fire (0.5x)
  • Immunities: Electric

How to Use This Pokémon Type Weakness Calculator

1. Select Defending Type 1: Use the first dropdown menu to choose the primary type of the Pokémon you want to analyze.
2. Select Defending Type 2: Use the second dropdown. If the Pokémon is single-type, choose “None”. Otherwise, select its secondary type.
3. Review the Results: The calculator will instantly update. The results are divided into three clear categories: Weaknesses (types to watch out for), Resistances (types that deal reduced damage), and Immunities (types that deal zero damage).
4. Interpret the Multipliers: Next to each attacking type in the results, a multiplier (e.g., 4x, 2x, 0.5x) shows the exact damage modification. This is crucial for understanding the severity of a matchup. Exploring a full sword and shield type chart can provide more context.

Key Factors That Affect Pokémon Type Matchups

• Dual-Typing: The most significant factor. A second type can add weaknesses, grant new resistances, or even negate an original weakness. For a deep dive, check out our dual type weakness calculator.
• Abilities: Certain abilities can completely alter type matchups. For example, the Levitate ability grants immunity to Ground-type attacks, negating a weakness for Pokémon like Weezing (Poison-type) or Rotom-Fan (Electric/Flying).
• Inverse Battles: A rare battle format where type effectiveness is reversed. In these battles, super-effective moves become “not very effective,” and vice-versa.
• Freeze-Dry: A unique Ice-type move that is super-effective against Water-types, ignoring the usual resistance Water has to Ice.
• Tera Type (Generation 9+): The Terastal phenomenon allows a Pokémon to temporarily change its type, completely altering its defensive profile mid-battle. A good strategy might involve using our pokemon types weakness calculator to plan your Tera types.
• Held Items: Items like the Air Balloon can grant temporary immunity to Ground moves, while Rings Target can remove an immunity, making a Ghost-type vulnerable to Normal attacks.

Frequently Asked Questions (FAQ)

How is damage calculated for dual-type Pokémon?

The effectiveness multipliers are multiplied. If an attacking type is super-effective (2x) against one defending type and resisted (0.5x) by the other, the result is neutral damage (2 * 0.5 = 1).

What causes a 4x weakness?

A 4x weakness, or double weakness, occurs when both of a Pokémon’s types are weak to the same attacking type. For example, a Bug/Steel type like Scizor is 4x weak to Fire because both Bug and Steel are weak to Fire.

What is an immunity?

An immunity means a Pokémon takes zero damage from a specific type of attack. For example, Ghost-types are immune to Normal and Fighting attacks, and Ground-types are immune to Electric attacks.

Does the order of the types matter (e.g., Water/Ground vs. Ground/Water)?

No, the order of the types does not change the defensive matchups. The calculation is purely multiplicative, so the result is the same regardless of which type is listed first.

How does STAB (Same Type Attack Bonus) relate to this?

STAB is an offensive bonus that increases a Pokémon’s attack power by 50% if the move’s type matches one of the Pokémon’s types. While our pokemon types weakness calculator focuses on defense, STAB is a critical factor in overall damage output.

Are there any Pokémon with no weaknesses?

Yes! Eelektross, a pure Electric-type Pokémon, has the ability Levitate. This ability grants it immunity to Ground-type moves, which is the only weakness of the Electric type, leaving it with no weaknesses under normal conditions.

Where can I find a complete list of all type interactions?

Comprehensive resources like a full pokemon type effectiveness chart provide a grid view of all 18 types and their interactions, which is great for study.

How do I use this calculator for competitive battling?

When building a team, use this tool to check the defensive synergy. If your main Pokémon has a 4x weakness to Fire, pair it with a Pokémon that resists or is immune to Fire. Check out our guide on scarlet and violet weaknesses for current meta strategies.