Smogon Calculator

Accurately predict Pokémon battle damage.

Battle Simulation Inputs

Damage Distribution

Damage Breakdown

Damage Multipliers and Components

Factor	Multiplier
Level Factor	—
Attack/Sp. Atk Stat	—
Move Power	—
Target Defense/Sp. Def Stat	—
Stage Modifiers	—
Random Roll	—
Critical Hit	—
Type Effectiveness	—
Ability Modifiers (e.g. Adaptability)	—
Terrain Modifiers	—
Weather Modifiers	—
Other Modifiers (e.g. STAB)	—
Final Damage Multiplier	—

What is a Smogon Damage Calculator?

A Smogon damage calculator is an essential tool for competitive Pokémon players aiming to understand the intricacies of battle. It simulates damage dealt by a specific move from an attacking Pokémon to a defending Pokémon, taking into account a vast array of in-game mechanics. Unlike the in-game damage display, which shows a range, a Smogon calculator provides precise calculations and breakdown, allowing players to strategize effectively. It helps determine if a Pokémon can KO an opponent in one hit, how many hits it will take, and the impact of various stat changes, abilities, and environmental factors.

Competitive players, content creators, and even casual players looking to deepen their understanding of Pokémon battles should utilize this tool. Common misunderstandings often revolve around the exact multipliers applied by abilities like Adaptability, the interaction of stat stages, and the range of the random damage roll. This calculator clarifies these elements.

Smogon Damage Calculator Formula and Explanation

The core damage formula in Pokémon is complex, but the Smogon calculator approximates it for simulation purposes. While the exact formula used by official game mechanics is proprietary and may evolve, the widely accepted "Smogon formula" provides a highly accurate representation for competitive play. The simplified version looks something like this:

Damage = (((2 * Level / 5 + 2) * Power * Atk/Def) / 50 + 2) * Modifiers

Where:

• Level: The level of the attacking Pokémon.
• Power: The base power of the move used.
• Atk: The relevant offensive stat of the attacker (Attack or Special Attack).
• Def: The relevant defensive stat of the defender (Defense or Special Defense).
• Modifiers: A complex multiplier accounting for type effectiveness, critical hits, abilities, weather, terrain, stat stages, and a random damage roll.

Variables Table

Input Variable Descriptions and Typical Ranges

Variable	Meaning	Unit	Typical Range (Level 50)
Attacker Level	The level of the Pokémon using the move.	Level (1-100)	50
Attacker's Relevant Stat	Attack (for physical moves) or Special Attack (for special moves).	Stat Value	50 – 400+
Attack Stage Modifier	Multiplicative modifier for the attacker's offensive stat.	Stage (-6 to +6)	-6 to +6
Move Base Power	The inherent power of the move.	Power Points (0-250+)	10 – 150+
Defender's Relevant Stat	Defense (for physical moves) or Special Defense (for special moves).	Stat Value	50 – 400+
Defense Stage Modifier	Multiplicative modifier for the defender's defensive stat.	Stage (-6 to +6)	-6 to +6
Type Effectiveness	Multiplier based on the attacking move's type vs. the defender's type(s).	Multiplier (0x, 0.25x, 0.5x, 1x, 2x, 4x)	0.25x to 4x
Critical Hit	A multiplier applied when a move lands a critical hit.	Boolean (Yes/No)	Yes/No
Random Damage Roll	A percentage applied to the final damage.	Multiplier (0.85-1.00 default)	0.85 to 1.15 (variable)

Practical Examples

Example 1: Standard Attack

Scenario: A Level 50 Garchomp (Attack 182) uses Earthquake (Power 100, Physical) against a Level 50 Steelix (Defense 230). Garchomp is Ground/Dragon, Steelix is Steel/Ground. No abilities, weather, or terrain are active. Standard critical hit rate.

• Attacker Level: 50
• Attacker Stat (Attack): 182
• Move Base Power: 100
• Move Category: Physical
• Defender Level: 50
• Defender Stat (Defense): 230
• Attacker Types: Ground, Dragon
• Defender Types: Steel, Ground
• Critical Hit: No
• Random Roll: Average (1.00)

Analysis: Earthquake (Ground) is neutral against Steel, and resisted by Ground (0.5x). Steelix's Ground typing resists Earthquake. However, Steelix's Steel typing makes it neutral to Ground. The net type effectiveness is 0.5x (since Ground is resisted by Steel/Ground). Garchomp's STAB (Same-Type Attack Bonus) is 1.5x for Ground-type moves. Steelix's Ground typing does not grant it immunity or further resistance beyond the 0.5x from being part Ground type. The effective move power for damage calculation is 100 * 1.5 (STAB) * 0.5 (Type Res) = 75.

Result: The calculator would predict a damage range of approximately **105 – 124 damage**, which is about **27.6% – 32.6%** of Steelix's HP (assuming standard EVs/IVs for Steelix). Earthquake hits Steelix neutrally due to its Steel typing, but the Ground typing on both results in a 0.5x multiplier from the defender's typing. This example highlights the importance of considering STAB and type matchups.

Example 2: Ability and Weather Impact

Scenario: A Level 50 Charizard (Special Attack 125) uses Fire Blast (Power 110, Special) against a Level 50 Venusaur (Special Defense 140). Charizard is Fire/Flying, Venusaur is Grass/Poison. It is sunny (Harsh Sunlight). Charizard has Blaze active (boosts Fire moves by 1.5x when HP is low). Venusaur has Chlorophyll (doubles Speed in sun – not relevant here, but shows ability consideration).

• Attacker Level: 50
• Attacker Stat (Sp. Atk): 125
• Move Base Power: 110
• Move Category: Special
• Defender Level: 50
• Defender Stat (Sp. Def): 140
• Attacker Types: Fire, Flying
• Defender Types: Grass, Poison
• Critical Hit: No
• Weather: Harsh Sunlight
• Attacker Ability: Blaze (for Fire moves)
• Random Roll: Average (1.00)

Analysis: Fire Blast is super-effective against Grass (2x). It is neutral against Poison. The net type effectiveness is 2x. Fire moves are boosted by Harsh Sunlight (+1.5x power). Charizard's Blaze ability activates, boosting Fire moves by 1.5x (this is often applied *before* other modifiers in some calculation versions or layered differently, Smogon calculators handle this). Let's assume the calculator applies the 1.5x STAB, 1.5x Sun, and 1.5x Blaze.

Result: With these factors, the damage would be significantly higher. The calculator would show a much larger damage range, potentially **220 – 260 damage**, representing **over 100%** of Venusaur's HP, likely resulting in a KO. This illustrates how abilities and environmental conditions dramatically alter battle outcomes.

How to Use This Smogon Damage Calculator

1. Select Attacker Details: Input the Attacker's Level, their relevant offensive stat (Attack or Special Attack), and any Attack Stage modifiers (e.g., from Swords Dance).
2. Input Move Details: Enter the Move's Base Power and select its Category (Physical or Special).
3. Select Defender Details: Input the Defender's Level, their relevant defensive stat (Defense or Special Defense), and any Defense Stage modifiers (e.g., from Amnesia).
4. Specify Types: Choose the Primary and Secondary types for both the Attacker and Defender.
5. Add Abilities: Select any relevant Abilities for both the Attacker and Defender that might influence damage (e.g., Adaptability, Levitate, Thick Fat).
6. Set Environment: Choose the active Terrain and Weather, if any.
7. Adjust Battle Conditions: Indicate if the move was a Critical Hit, if the move is on its charging turn, and select the desired Random Damage Roll (defaulting to Average is common).
8. Calculate: Click the "Calculate Damage" button.
9. Interpret Results: The calculator will display the minimum and maximum damage range, the percentage of the defender's HP this represents, and the overall Type Effectiveness multiplier. The table below the results provides a breakdown of how each factor contributed to the final damage multiplier.
10. Reset: Use the "Reset" button to clear all fields and return to default values.
11. Copy: Use the "Copy Results" button to copy the calculated damage range and HP percentage to your clipboard for easy sharing or documentation.

Choosing the correct types, abilities, and stats is crucial for accurate predictions. Consult damage calculation resources or Pokémon databases if unsure about specific values.

Key Factors That Affect Smogon Damage Calculations

1. Base Stats: The fundamental Attack, Defense, Special Attack, and Special Defense stats of a Pokémon are the primary determinants of offensive and defensive potential. Higher offensive stats lead to more damage, while higher defensive stats reduce it.
2. Level: The attacker's and defender's levels significantly influence the damage calculation. The formula scales damage based on level, making higher-level Pokémon generally more powerful. Competitive play typically standardizes this at Level 50.
3. Move Base Power: Stronger moves naturally inflict more damage. Moves with higher base power are prioritized when available, but accuracy and secondary effects must also be considered.
4. Type Effectiveness: This is one of the most critical factors. Super-effective moves deal double damage (or quadruple if both attacker and defender types align perfectly), while not-very-effective moves deal half damage (or a quarter). Immune types deal zero damage.
5. STAB (Same-Type Attack Bonus): When a Pokémon uses a move that matches one of its own types, the move's power is boosted by 50% (multiplied by 1.5). This is a fundamental part of competitive strategy.
6. Abilities: Many Pokémon abilities directly impact damage. Adaptability boosts STAB to 2x, Tinted Lens increases the power of resisted moves, Huge Power/Pure Power double Attack, and defensive abilities like Multiscale halve damage at full HP.
7. Stat Stages: Moves that raise or lower stats (e.g., Calm Mind, Growl) apply a multiplier to the relevant stat. Each stage is a 1.5x or 0.66x multiplier (for positive and negative stages, respectively), capping at +/- 6 stages.
8. Critical Hits: Critical hits ignore most positive stat stage boosts on the defender and negative boosts on the attacker, and they always deal 1.5x damage (or 2x in older generations).
9. Weather: Certain weather conditions boost or weaken specific types. For example, Harsh Sunlight boosts Fire moves and weakens Water moves, while Rain does the opposite.
10. Terrain: Terrains like Electric, Grassy, Misty, and Psychic also modify the power of certain move types or the effectiveness of certain attacks.
11. Items: While not always included in basic calculators, items like Choice Specs/Band (boost power at the cost of move choice) or Life Orb (boosts power at the cost of HP) significantly affect damage output.
12. Random Damage Roll: The game applies a random multiplier between 0.85 and 1.00 (default) to the final damage calculation, meaning the same attack can yield slightly different results each time. This calculator allows adjusting this range.

Frequently Asked Questions (FAQ)

Q: What is the difference between the in-game damage range and the calculator's range?

A: The in-game damage range (e.g., 105-124) reflects the minimum and maximum possible damage due to the random damage roll (85%-100% by default). The Smogon calculator replicates this by calculating both ends of the spectrum.

Q: How does STAB work in the calculation?

A: STAB (Same-Type Attack Bonus) is applied when the move's type matches one of the attacker's Pokémon types. It acts as a 1.5x multiplier on the move's power, applied during the modifier calculation phase.

Q: My move is resisted, but the calculator says it's super-effective. Why?

A: This usually happens with dual-type Pokémon. The calculator determines the *net* type effectiveness by multiplying the effectiveness of the move against each of the defender's types. For example, a Fire move against a Grass/Flying type is 2x against Grass and 1x against Flying, resulting in a net 2x multiplier.

Q: Does the calculator account for all abilities?

A: This calculator includes many common abilities that directly affect damage output. However, some abilities (like Prankster or Regenerator) have effects not directly tied to a single damaging move's calculation and may not be fully represented or may require specific logic interpretation.

Q: What does "Average (1.00)" mean for the random damage roll?

A: In most Pokémon generations, the damage calculation includes a random multiplier applied to the final damage. While the default range is 0.85 to 1.00, selecting "Average (1.00)" assumes the highest possible outcome of this roll, providing a consistent baseline. For precise risk assessment, using the min/max range is recommended.

Q: How do stat stages like "+2 Attack" affect the calculation?

A: Each positive stage increases the relevant stat by 50% (multiplied by 1.5), and each negative stage decreases it by 33.3% (multiplied by 0.66). The calculator applies these modifiers to either the attacker's offensive stat or the defender's defensive stat based on the input stage value.

Q: Can this calculator predict damage for all Pokémon generations?

A: This calculator aims to follow the widely accepted Smogon damage formula, which is generally accurate for modern competitive Pokémon generations (Gen 5 onwards). Specific mechanics or minor differences may exist in older generations.

Q: My defender has an ability that negates a move type (e.g., Levitate for Ground moves). How is this handled?

A: Abilities like Levitate grant complete immunity to a specific type. The calculator should reflect this by showing 0x type effectiveness or zero damage when such an ability is active and the move type is affected.