Pokemon Type Calculator

Determine the effectiveness of attacks between Pokémon types.

Type Effectiveness Calculator

Select an attacking type and a defending type to see the damage multiplier.

Result

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The effectiveness is determined by the interaction between the attacking move's type and the defending Pokémon's type(s). Each type has inherent strengths and weaknesses against other types.

What is a Pokémon Type Calculator?

A Pokémon type calculator is an indispensable tool for any Pokémon Trainer, whether they are battling in the video games, the trading card game, or competitive online arenas. It helps players understand the intricate web of elemental interactions that define Pokémon battles. Each Pokémon and each move in the Pokémon universe belongs to one or more types (e.g., Fire, Water, Grass, Electric). These types dictate how much damage an attack of one type will inflict on a Pokémon of another type. A Pokémon type calculator simplifies this complex system by providing clear, instant feedback on these matchups.

Understanding type effectiveness is crucial for building a balanced team, choosing the right moves for your Pokémon, and formulating winning battle strategies. It allows trainers to exploit an opponent's weaknesses while simultaneously shielding their own Pokémon from incoming super-effective attacks. This tool is used by casual players looking to progress through the story, competitive players aiming for the top ranks, and even fans who enjoy theorycrafting team compositions.

Common misunderstandings often revolve around dual-typing, where a Pokémon has two types, leading to a more complex interaction of strengths and weaknesses. This calculator aims to clarify these nuances, showing how both types contribute to the overall defensive or offensive profile.

Who Should Use a Pokémon Type Calculator?

• New Trainers: To quickly learn the basics of type matchups.
• Competitive Battlers: To optimize team composition and move selection for every possible scenario.
• Casual Players: To overcome challenging Gym Leaders or the Elite Four.
• Pokémon TCG Players: To understand how Pokémon V, GX, or EX cards interact with attacking energy types.
• Fans of Theorycrafting: To explore complex strategic possibilities.

Pokémon Type Effectiveness Formula and Explanation

The core of the Pokémon type calculator lies in its ability to determine the damage multiplier based on the attacking move's type and the defending Pokémon's type(s). The fundamental principle is that certain types deal double damage (super effective), half damage (not very effective), or zero damage (no effect) to other types.

For a single-type Pokémon, the calculation is straightforward: look up the interaction between the attacking type and the defending type.

For dual-type Pokémon, the multipliers from both types are multiplied together. For example, if a Water-type move is used against a Grass/Flying type Pokémon:

• Water vs. Grass is Super Effective (2x damage).
• Water vs. Flying is Not Very Effective (0.5x damage).

The final multiplier would be 2 * 0.5 = 1x damage (normally effective).

The Type Effectiveness Matrix

The following matrix illustrates the base multipliers. This is the data our calculator uses:

Type Effectiveness Multipliers

Attacking Type	Defending Type
	Normal	Fire	Water	Grass	Electric	Ice	Fighting	Poison	Ground	Flying	Psychic	Bug	Rock	Ghost	Dragon	Dark	Steel	Fairy
Normal	1	1	1	1	1	1	1	1	1	1	1	1	0.5	0	1	1	0.5	1
Fire	1	0.5	0.5	2	1	2	1	1	1	1	1	2	0.5	1	0.5	1	2	1
Water	1	2	0.5	0.5	1	1	1	1	2	1	1	1	2	1	0.5	1	1	1
Grass	1	0.5	2	0.5	1	1	1	0.5	2	0.5	1	0.5	2	1	0.5	1	0.5	1
Electric	1	1	2	0.5	0.5	1	1	1	0	2	1	1	1	1	0.5	1	1	1
Ice	1	0.5	0.5	2	1	0.5	1	1	2	2	1	1	1	1	2	1	0.5	1
Fighting	2	1	1	1	1	2	1	0.5	1	0.5	0.5	0.5	2	0	1	2	2	0.5
Poison	1	1	1	2	1	1	1	0.5	0.5	1	1	0.5	0.5	0.5	1	1	0	2
Ground	1	2	1	0.5	2	1	1	2	1	0	1	0.5	2	1	1	1	2	1
Flying	1	1	1	2	0.5	1	2	1	1	1	1	1	0.5	1	1	1	0.5	1
Psychic	1	1	1	1	1	1	2	2	1	1	0.5	0.5	0.5	1	1	0	0.5	1
Bug	1	0.5	1	2	1	1	0.5	0.5	1	0.5	2	1	1	0.5	1	2	0.5	0.5
Rock	1	2	1	1	1	2	0.5	1	0.5	1	1	1	1	1	1	1	0.5	1
Ghost	0	1	1	1	1	1	1	1	1	1	2	1	1	2	1	0.5	1	1
Dragon	1	2	1	1	1	1	1	1	1	1	1	1	1	1	2	0	0.5	0
Dark	1	1	1	1	1	1	0.5	1	1	1	2	1	1	2	1	0.5	1	0.5
Steel	1	0.5	0.5	1	0.5	2	1	0	1	1	1	1	2	1	1	1	0.5	2
Fairy	1	0.5	1	1	1	1	2	0.5	1	1	0.5	1	1	1	2	2	0.5	1

Note: The 'Ghost' attacking type has no effect on 'Normal' types, and 'Fighting' and 'Normal' types have no effect on 'Ghost' types. Similarly, 'Electric' has no effect on 'Ground' types.

Variables Table

Type Effectiveness Variables

Variable	Meaning	Type	Example Values
Attacking Type	The elemental type of the move being used.	String (Categorical)	Fire, Water, Grass, Electric, Normal, etc.
Defending Type 1	The primary elemental type of the Pokémon being attacked.	String (Categorical)	Fire, Water, Grass, Electric, Normal, etc.
Defending Type 2	The secondary elemental type of the Pokémon being attacked (optional).	String (Categorical)	None, Fire, Water, Grass, Electric, Normal, etc.
Damage Multiplier	The factor by which the base damage is multiplied based on type matchups.	Number (Decimal)	2 (Super Effective), 1 (Normally Effective), 0.5 (Not Very Effective), 0 (No Effect)

Practical Examples

Example 1: Charizard vs. Blastoise

Inputs:
Attacking Type: Fire (Charizard's potential attack)
Defending Type 1: Water (Blastoise's primary type)
Defending Type 2: None

Calculation:
Using the type chart, Fire attacks Water result in a 2x damage multiplier.

Result:
Fire-type moves are Super Effective against Blastoise, dealing 2x damage.

Example 2: Pikachu vs. Geodude

Inputs:
Attacking Type: Electric (Pikachu's signature type)
Defending Type 1: Rock (Geodude's primary type)
Defending Type 2: Ground (Geodude's secondary type)

Calculation:
1. Electric vs. Rock: 2x damage (Super Effective)
2. Electric vs. Ground: 0x damage (No Effect)
Combined Multiplier: 2 * 0 = 0x damage.

Result:
Electric-type moves have No Effect on Geodude, dealing 0x damage, due to its Ground typing. This highlights why understanding dual types is critical.

Example 3: Gengar vs. Espeon

Inputs:
Attacking Type: Ghost (Gengar's primary type)
Defending Type 1: Psychic (Espeon's type)
Defending Type 2: None

Calculation:
Ghost vs. Psychic: 2x damage (Super Effective).

Result:
Ghost-type moves are Super Effective against Espeon, dealing 2x damage.

How to Use This Pokémon Type Calculator

1. Select Attacking Type: In the first dropdown menu, choose the type of the move your Pokémon is about to use. For example, if your Pikachu is using Thunderbolt, select 'Electric'.
2. Select Defending Type 1: In the second dropdown menu, choose the primary type of the opponent Pokémon you are targeting. If facing a Water-type Pokémon like Vaporeon, select 'Water'.
3. Select Defending Type 2 (Optional): If the opponent Pokémon has a second type (like Charizard being Fire/Flying), select that secondary type in the third dropdown menu. If it's a single-type Pokémon, leave this as 'None'.
4. Click "Calculate Effectiveness": Press the button to see the results.

Interpreting the Results:

• Primary Result (Multiplier): This shows the overall damage multiplier:
  • 2x (Super Effective): The move deals double damage. Aim for these!
  • 1x (Normally Effective): The move deals standard damage.
  • 0.5x (Not Very Effective): The move deals half damage. Avoid these if possible.
  • 0x (No Effect): The move deals no damage at all. These are completely ineffective.
• Effectiveness Status: A quick summary like "Super Effective", "Not Very Effective", or "No Effect".
• Offensive Multiplier: Shows the direct damage multiplier for the selected attacking type.
• Defensive Weaknesses/Resistances/Immunities: If you entered a defending type, these sections will list other types that are strong, weak, or ineffective against it. This helps in planning your own team's resistances.

Using the calculator regularly will help internalize these matchups for faster decision-making during battles.

Key Factors That Affect Pokémon Type Effectiveness

1. Attacking Move Type: The fundamental basis of calculation. A Fire move behaves differently than a Water move.
2. Defending Pokémon's Primary Type: The first type listed for a Pokémon significantly influences the matchup.
3. Defending Pokémon's Secondary Type: Crucial for dual-type Pokémon, as it modifies the overall effectiveness by multiplying its own interaction. For example, a Ground-type move is normally effective (1x) against a Rock-type Pokémon, but not very effective (0.5x) against a Rock/Flying type because Flying resists Ground.
4. Abilities: Certain Pokémon abilities can alter type effectiveness. For instance, Levitate makes Ground-type moves have no effect on a Pokémon, overriding the usual typing. The Wonder Guard ability makes a Pokémon only vulnerable to Super Effective moves.
5. Items: Items like "Ring Target" remove resistances and immunities, making a Pokémon take normal damage from types it would normally resist or be immune to. Items like "Weakness Policy" boost Attack and Special Attack when hit by a Super Effective move.
6. Terastallization (Gen 9+): This mechanic allows a Pokémon to change its type to one of its original types, its Tera Type, or even a completely new type, drastically altering its strengths and weaknesses mid-battle. This calculator reflects base types and does not account for dynamic type changes like Terastallization.
7. STAB (Same Type Attack Bonus): While not directly part of type effectiveness calculation, STAB grants a 50% damage bonus when a Pokémon uses a move that matches one of its own types. This boosts the overall damage output but doesn't change the *effectiveness* multiplier itself.

FAQ – Pokémon Type Calculator

Q1: How does dual-typing work in Pokémon battles?

A1: When a Pokémon has two types, the damage multiplier from the attacking move against the first type is multiplied by the damage multiplier against the second type. For example, if a move is 2x effective against Type A and 0.5x effective against Type B, the final multiplier is 2 * 0.5 = 1x.

Q2: Are there any types that hit every other type effectively?

A2: No single type is super effective against all other types. Strategic type coverage with multiple moves is necessary.

Q3: Why does my Electric move do no damage to a Geodude?

A3: Geodude is Rock/Ground type. Electric moves are super effective against Rock (2x) but have no effect against Ground (0x). The combined multiplier is 2 * 0 = 0x, meaning the move is completely ineffective.

Q4: What does "No Effect" mean?

A4: "No Effect" means the attacking move's type has absolutely zero interaction with the defending Pokémon's type(s), resulting in a 0x damage multiplier. For example, Normal-type moves have no effect on Ghost-types.

Q5: How do I find out a Pokémon's types if I don't know them?

A5: You can typically see a Pokémon's types in the game's menu, on its summary screen, or by using reliable online Pokédex resources. This calculator assumes you know the types you are inputting.

Q6: Does the calculator account for abilities like Levitate or Thick Fat?

A6: This calculator focuses on base type effectiveness. Abilities, items, and other game mechanics that modify type interactions are not factored into these calculations. You'll need to consider those separately.

Q7: What is the difference between "Not Very Effective" and "No Effect"?

A7: "Not Very Effective" (0.5x damage) means the move still damages the Pokémon, but at half the normal rate. "No Effect" (0x damage) means the move deals zero damage.

Q8: Can I use this for Pokémon GO battles?

A8: The core type effectiveness principles are the same in Pokémon GO, making this calculator a useful reference. However, Pokémon GO has slightly different move pools and specific mechanics (like fast vs. charged moves) that aren't directly simulated here.