Pokémon Showdown Damage Calculator

Accurately predict damage outcomes in Pokémon battles. Input your Pokémon’s stats, the move’s power, and the opponent’s defensive stats to see the calculated damage range.

Damage Calculation Inputs

Damage Distribution

Damage range distribution for the given inputs.

Type Effectiveness Multipliers

Attacking Type	Defending Type	Multiplier

What is a Pokémon Showdown Damage Calculator?

A Pokémon Showdown damage calculator is an indispensable tool for competitive Pokémon players, particularly those participating in online battles on platforms like Pokémon Showdown. Its primary function is to accurately predict the amount of damage a specific move will inflict on an opposing Pokémon. This calculation takes into account a multitude of factors, including the levels of both Pokémon, their respective offensive and defensive stats, the base power of the move, and crucially, the type matchups between the move and the defending Pokémon.

Understanding how much damage you can deal is fundamental to strategic decision-making in Pokémon battles. It helps players determine which moves to use, when to switch Pokémon, how to break through an opponent’s defenses, and how to conserve their own Pokémon’s health. Without a reliable damage calculator, competitive Pokémon battling would largely rely on guesswork and past experience, which is often insufficient given the complexity and variety of strategies employed.

Who should use it?

• Competitive Pokémon battlers on Pokémon Showdown or other simulators.
• Players aiming to build effective teams with optimized move coverage.
• Anyone looking to understand the specific mechanics of Pokémon battle damage.
• Players who want to test hypothetical scenarios and strategies before implementing them in actual battles.

Common Misconceptions:

• It only calculates maximum damage: Most calculators provide a damage range, acknowledging the random factor in battles.
• It accounts for *all* battle effects: Basic calculators focus on core damage. Advanced factors like critical hits, abilities (e.g., Levitate, Thick Fat), items (e.g., Choice Specs, Assault Vest), status conditions, weather, terrain, entry hazards, and specific move effects (e.g., recoil, stat drops) often require more complex or specialized tools, or manual input adjustments. Our calculator provides a solid foundation but may not encompass every single niche interaction.
• It’s cheating: Using a damage calculator is standard practice in competitive Pokémon and is permitted on most platforms. It’s a tool for understanding game mechanics, not for exploiting glitches.

Pokémon Showdown Damage Calculator Formula and Mathematical Explanation

The damage calculation in Pokémon battles is a complex process, but the core formula used in many simulators, including Pokémon Showdown, can be broken down. The following is a simplified representation, focusing on the most critical components:

Core Damage Formula:

Damage = (((2 * Attacker Level / 5 + 2) * Move Power * Attacker's Attack / Defender's Defense) / 50 + 2) * STAB * Type Effectiveness * Other Multipliers

Let’s break down each component:

Variable	Meaning	Unit	Typical Range
Attacker Level	The level of the attacking Pokémon.	Level	1-100
Attacker’s Attack	The effective Attack stat of the attacking Pokémon. This is calculated based on base stat, IVs, EVs, Nature, and any stat modifications (e.g., Swords Dance, Same Type Attack Bonus (STAB) boost). For physical moves, this is the Attack stat; for special moves, it’s the Special Attack stat.	Stat Points	Varies widely based on Pokémon and training
Move Power	The base power of the move being used. Some moves have variable power or no power (e.g., status moves).	Power Points (PP)	0-150 (Base Power)
Defender’s Defense	The effective Defense stat of the defending Pokémon. This is calculated based on base stat, IVs, EVs, Nature, and any stat modifications. For physical moves, this is the Defense stat; for special moves, it’s the Special Defense stat.	Stat Points	Varies widely based on Pokémon and training
STAB (Same Type Attack Bonus)	A multiplier applied if the move’s type matches one of the user’s Pokémon types. Typically 1.5x.	Multiplier	1.0 (No STAB) or 1.5 (STAB)
Type Effectiveness	A multiplier determined by the move’s type versus the defender’s type(s). (e.g., 2x for Super Effective, 1x for Normally Effective, 0.5x for Not Very Effective, 0x for Immune).	Multiplier	0, 0.5, 1.0, 2.0
Random Factor	A random multiplier applied to the final damage, typically ranging from 0.85 to 1.0.	Multiplier	0.85 – 1.0

Step-by-Step Calculation Breakdown:

1. Base Damage Calculation: The initial part of the formula calculates a base damage value before modifiers. This involves the attacker’s level, move power, attacker’s offensive stat, and defender’s defensive stat. The formula `(2 * Level / 5 + 2)` scales the impact of the level, and `(… / 50 + 2)` provides a slight baseline damage boost.
2. STAB Application: If the move’s type matches one of the user’s types, the calculated damage is multiplied by 1.5 (or 1.0 if no STAB).
3. Type Effectiveness: The damage is then multiplied by the type effectiveness multiplier based on the move’s type and the defender’s type(s). This is where Super Effective (2x), Not Very Effective (0.5x), and Immune (0x) interactions come into play. The multipliers are combined if the defender has two types.
4. Other Multipliers: This category includes a vast array of potential modifiers not covered in the simplified formula, such as critical hits (2x damage unless modified), abilities (e.g., Sand Force, Tinted Lens), items (e.g., Choice Band, Life Orb), status conditions (e.g., Burn halves physical damage), weather, terrain, Parental Bond, etc. These are applied in a specific order.
5. Random Factor: Finally, a random number between 0.85 and 1.00 (inclusive) is generated and multiplied with the total damage. This is why the same attack can sometimes hit slightly harder or softer.

Our calculator focuses on the core formula, STAB, and Type Effectiveness, providing a damage range based on the Random Factor to give a realistic prediction for competitive Pokémon battles. For a full breakdown of all possible modifiers, refer to specialized Pokémon battling resources.

Practical Examples (Real-World Use Cases)

Example 1: Standard Offensive Pressure

Scenario: A Level 50 Charizard (Fire/Flying) using Flamethrower (Fire, 90 Power) against a Level 50 Venusaur (Grass/Poison).

Inputs:

• Attacker Level: 50
• Attacker’s Attack Stat (Special Attack for Charizard): 150
• Move Power: 90
• Move Type: Fire
• Defender Level: 50
• Defender’s Defense Stat (Special Defense for Venusaur): 130
• Defender Type 1: Grass
• Defender Type 2: Poison

Calculation Breakdown (Simplified):

• Base Damage Calc: ( (2 * 50 / 5 + 2) * 90 * 150 / 130 ) / 50 + 2 ≈ ( (22) * 90 * 1.1538 ) / 50 + 2 ≈ 2284.6 / 50 + 2 ≈ 45.69 + 2 ≈ 47.69
• STAB: Charizard is Fire type, Flamethrower is Fire type. Multiplier = 1.5. Damage = 47.69 * 1.5 ≈ 71.54
• Type Effectiveness: Fire vs. Grass is Super Effective (2x). Fire vs. Poison is Normally Effective (1x). Combined Multiplier = 2 * 1 = 2. Damage = 71.54 * 2 ≈ 143.08
• Random Factor (85% – 100%): Damage Range ≈ 143.08 * 0.85 to 143.08 * 1.00 ≈ 121.6 to 143.1

Result: The Flamethrower will deal approximately 122-143 damage. This is a significant portion of Venusaur’s health, potentially leading to a knockout if Venusaur’s HP is low enough.

Interpretation: This demonstrates the power of a STAB move hitting a type that is weak to it. Charizard can apply strong offensive pressure against Venusaur with this move.

Example 2: Neutral Damage and Defensive Walls

Scenario: A Level 50 Garchomp (Dragon/Ground) using Earthquake (Ground, 100 Power) against a Level 50 Toxapex (Poison/Water).

Inputs:

• Attacker Level: 50
• Attacker’s Attack Stat: 170
• Move Power: 100
• Move Type: Ground
• Defender Level: 50
• Defender’s Defense Stat: 160
• Defender Type 1: Poison
• Defender Type 2: Water

Calculation Breakdown (Simplified):

• Base Damage Calc: ( (2 * 50 / 5 + 2) * 100 * 170 / 160 ) / 50 + 2 ≈ ( (22) * 100 * 1.0625 ) / 50 + 2 ≈ 2337.5 / 50 + 2 ≈ 46.75 + 2 ≈ 48.75
• STAB: Garchomp is Ground type, Earthquake is Ground type. Multiplier = 1.5. Damage = 48.75 * 1.5 ≈ 73.13
• Type Effectiveness: Ground vs. Poison is Normally Effective (1x). Ground vs. Water is Normally Effective (1x). Combined Multiplier = 1 * 1 = 1. Damage = 73.13 * 1 = 73.13
• Random Factor (85% – 100%): Damage Range ≈ 73.13 * 0.85 to 73.13 * 1.00 ≈ 62.16 to 73.13

Result: The Earthquake will deal approximately 62-73 damage.

Interpretation: This damage is moderate. Toxapex is known for its incredible defensive stats and bulk, making it difficult to take down with neutral hits. While Earthquake is a powerful move, it doesn’t exploit any weaknesses Toxapex possesses. This highlights how defensive stats and type matchups significantly mitigate damage, even from strong STAB attacks.

How to Use This Pokémon Showdown Damage Calculator

Using our Pokémon Showdown damage calculator is straightforward and designed to provide quick, actionable insights for your battles. Follow these steps:

1. Input Attacker Details:
   • Attacker Level: Enter the level of your attacking Pokémon. Defaults to 50, a common level in competitive formats.
   • Attacker’s Attack Stat: Input the calculated Attack or Special Attack stat (depending on the move) for your Pokémon at the specified level. This should include base stats, IVs, EVs, and nature bonuses.
2. Input Move Details:
   • Move Power: Enter the base power of the move your Pokémon is using.
   • Move Type: Select the type of the move from the dropdown list.
3. Input Defender Details:
   • Defender Level: Enter the level of the defending Pokémon.
   • Defender’s Defense Stat: Input the calculated Defense or Special Defense stat for the defending Pokémon at the specified level.
   • Defender’s Type 1 & Type 2: Select the primary and secondary types of the defending Pokémon. If the Pokémon only has one type, select “– None –” for Type 2.
4. Calculate: Click the “Calculate Damage” button. The calculator will process your inputs and display the results.

Reading the Results:

• Main Result (Highlighted): This shows the minimum possible damage output considering the 85% random factor. It’s a good indicator of the lower bound of damage.
• Damage Range: This displays the predicted range of damage, from the minimum (85% roll) to the maximum (100% roll). Example: “62 – 73”.
• Effectiveness: This indicates the type matchup. It will say “Super Effective (2x)”, “Not Very Effective (0.5x)”, “Immune (0x)”, or “Normally Effective (1x)”. This is crucial for understanding why certain moves do more or less damage.
• STAB Bonus: Shows whether the Same Type Attack Bonus was applied (1.5x) or not (1.0x).
• Damage Distribution Chart: Visualizes the likelihood of different damage outputs within the calculated range.
• Type Effectiveness Table: Provides a lookup for the type matchup multipliers.

Decision-Making Guidance:

• High Damage Range / Super Effective: Indicates a strong offensive move that can significantly threaten the opponent. Consider using it to KO or deal heavy damage.
• Moderate Damage Range / Normal Effectiveness: A standard hit. Assess if the damage is sufficient based on the opponent’s remaining HP and potential bulk.
• Low Damage Range / Not Very Effective: The move does minimal damage. Consider switching to a Pokémon or move that has better type coverage against the opponent.
• Immune: The move will deal 0 damage. Never use an immune move against a Pokémon that resists it.
• Use the Copy Results Button: After calculating, you can use the “Copy Results” button to easily share the outcome or save it for later reference.

Remember to adjust the “Attacker’s Attack Stat” and “Defender’s Defense Stat” inputs based on the specific Pokémon’s stats, including any boosts or drops from abilities, items, or previous moves.

Key Factors That Affect Pokémon Showdown Damage Results

While our Pokémon Showdown damage calculator provides accurate predictions based on core mechanics, several other factors can significantly influence the actual damage dealt or received in battle. Understanding these is key to mastering competitive Pokémon.

1. Critical Hits: A critical hit bypasses any type effectiveness multipliers (except those that would further reduce damage, like Wonder Room) and doubles the damage dealt (or triples it in Gen 1). Moves like Focus Energy or items like the Lucky Egg increase critical hit chance. While not included in the base calculation, it’s a major factor for burst damage.
2. Abilities: Pokémon abilities play a huge role. For example:
   • Offensive Abilities: Tinted Lens makes resisted moves 2x instead of 0.5x. Adaptability boosts STAB from 1.5x to 2x. Sheer Force removes secondary effects to boost move power by 30%.
   • Defensive Abilities: Levitate grants immunity to Ground-type moves. Thick Fat halves damage from Fire and Ice-type moves. Filter and Solid Rock reduce damage taken from super-effective moves by 25%.
   • Stat-Altering Abilities: Huge Power and Pure Power double the Attack stat. Download boosts Attack or Special Attack based on the opponent’s defenses.
3. Items: Held items can dramatically alter offensive and defensive capabilities.
   • Offensive Items: Choice Band/Specs boost Attack/Special Attack by 50% but lock the user into one move. Life Orb adds a 30% damage boost at the cost of 10% HP per attack. Expert Belt boosts super-effective moves by 20%.
   • Defensive Items: Eviolite boosts the Defense and Special Defense of unevolved Pokémon by 50%. Leftovers provide passive HP recovery. Sitrus Berry restores HP when low.
4. Stat Stages (Stat Experience): Moves like Swords Dance, Nasty Plot, Calm Mind, or defensive moves like Iron Defense and Amnesia raise or lower a Pokémon’s stats by one stage (+/- 10% per stage). These modifiers are applied multiplicatively after base stats but before the final damage calculation. For example, a +2 Attack boost results in 200% of the base Attack stat being used.
5. Weather Conditions: Certain moves trigger weather effects that modify move power. For instance, Fire moves are 50% stronger in harsh sunlight, while Water moves are 50% weaker. Ground-type moves deal 25% less damage during rain. Hail boosts the power of Ice-type moves (in certain generations) and damages non-Ice types. Sandstorm boosts Special Defense for Rock-types and damages non-Rock/Ground/Steel types.
6. Terrain Effects: Similar to weather, terrains (Electric, Grassy, Misty, Psychic) can activate upon entry and modify move effectiveness or grant other effects. For example, Electric Terrain boosts Electric-type moves by 30% and prevents sleeping. Grassy Terrain boosts Grass-type moves by 30% and provides HP recovery.
7. Burn Status: A Pokémon afflicted with the Burn status condition has its physical Attack stat halved (except for Fire-type Pokémon using Fire-type moves). This significantly reduces the damage dealt by physical attackers.
8. Multi-Hit Moves & Parental Bond: Some moves hit multiple times (e.g., Double Kick, Icicle Spear). Each hit is calculated independently with a separate random factor. Parental Bond (the ability of Silvally’s signature move, Clanging Scales, or Ultra Necrozma’s Photon Geyser) allows the second hit to deal 50% of the calculated damage, without STAB or abilities applying to the second hit.

When using our calculator, remember to adjust the Attack and Defense stats to account for relevant abilities, items, and stat modifications for the most accurate predictions in a real competitive setting.

Frequently Asked Questions (FAQ)

What is the difference between Attack and Special Attack in the calculator?

The calculator uses the “Attacker’s Attack Stat” input. You should input the Pokémon’s Attack stat if the move is physical (e.g., Tackle, Earthquake) and its Special Attack stat if the move is special (e.g., Flamethrower, Psychic). Similarly, use the defender’s Defense stat for physical attacks and Special Defense for special attacks.

Does the calculator account for critical hits?

No, this simplified calculator does not directly account for critical hits. Critical hits typically double the damage dealt (before other modifiers). You would need to manually double the calculated damage range to estimate critical hit damage.

How do I input stats for EVs and IVs?

The calculator asks for the *effective* Attack and Defense stats at the given level. You can use external Pokémon stat calculators (like those found on Smogon or Serebii) to determine these final stat values based on base stats, EVs, IVs, Nature, and Level, then input those numbers here.

What does “STAB” mean, and is it included?

STAB stands for Same Type Attack Bonus. It’s a 50% damage increase (multiplier of 1.5x) applied when a Pokémon uses a move that matches one of its own types. Yes, this calculator includes the STAB bonus.

Why do I get a damage range instead of a single number?

Pokémon damage calculations include a random factor that applies a multiplier between 0.85x and 1.0x to the final damage. This means the same attack can yield slightly different results each time. The calculator shows this range to reflect the actual in-game variance.

How does type effectiveness work with dual-type Pokémon?

When a Pokémon has two types, the type effectiveness multipliers are multiplied together. For example, if a Water move hits a Water/Ground type: Water vs. Water is Not Very Effective (0.5x), and Water vs. Ground is Normally Effective (1x). The combined multiplier is 0.5 * 1 = 0.5x.

Can this calculator predict damage from abilities like Huge Power or items like Choice Band?

This calculator primarily focuses on the core damage formula, STAB, and type effectiveness. For abilities like Huge Power that directly alter the base Attack/Special Attack stat, you should calculate the boosted stat value externally and input it into the “Attacker’s Attack Stat” field. Similarly, for items like Choice Band that boost stats, input the modified stat value. Other ability/item effects (like Filter, Life Orb, or weather) that modify the final damage calculation need to be applied manually or considered as additional multipliers.

Is the calculator accurate for all generations of Pokémon?

The core damage formula has remained relatively consistent, but specific multipliers, abilities, items, and mechanics can vary between Pokémon generations. This calculator is based on the modern damage formula commonly used in Generation 8/9 and platforms like Pokémon Showdown. For generational specifics, consult detailed guides.

Related Tools and Internal Resources

• Competitive Pokémon Team Builder
  Create and optimize your competitive Pokémon teams with detailed stat analysis and type synergy suggestions.
• Pokémon Type Matchup Chart
  A quick reference guide to understand offensive and defensive type advantages and disadvantages.
• Pokémon Stat Calculator
  Calculate the exact stats of your Pokémon at any level, considering EVs, IVs, and Natures.
• Pokémon Move List Database
  Explore details on every Pokémon move, including power, type, category, and effects.
• Pokémon Ability Guide
  Learn about the unique abilities of each Pokémon and how they impact battles.
• Advanced Pokémon Battle Strategy
  In-depth articles on competitive battling strategies, metagame analysis, and team archetypes.