Pokemon Calculator Showdown

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Expert Reviewer: David Chen, Competitive Pokemon Analyst & Math Specialist

Verified for Gen 9 Battle Mechanics Accuracy

Optimize your competitive strategy with our Pokemon Calculator Showdown. This tool allows you to calculate exact damage rolls, determine required stats for a KO, or reverse-engineer the opponent’s defensive investment based on the standard damage formula used in competitive formats like VGC and Smogon.

Pokemon Damage Calculator

Includes STAB, Type, Items, and Weather.

Enter variables and click Calculate to see results.

Pokemon Calculator Showdown Formula

Damage = (((((2 × Level / 5) + 2) × Power × A / D) / 50) + 2) × Modifier

Source: Smogon Damage Mechanics | Bulbapedia Mechanics

Variables:

  • Level (L): Usually 50 for VGC/BSS or 100 for Smogon 6v6.
  • Attack (A): The actual stat of the attacking Pokemon (including buffs).
  • Power (P): The base power of the move being used.
  • Defense (D): The actual stat of the defending Pokemon.
  • Modifier (M): Multiplier combining STAB (1.5x), Type Effectiveness (0.5x – 4x), Items, and Weather.

What is Pokemon Calculator Showdown?

The Pokemon Calculator Showdown is a specialized utility used by competitive players to predict the outcome of interactions during a battle. Unlike casual play, competitive Pokemon relies on “calcs” to determine if a specific move will secure a Knock Out (KO) or if a Pokemon can survive a hit from a specific threat.

This calculator uses the core engine logic found in “Showdown” battle simulators. By adjusting individual variables, players can fine-tune their Effort Values (EVs) to ensure they hit specific “benchmarks”—such as outspeeding a threat or surviving a boosted attack from a Legendary Pokemon.

How to Calculate Pokemon Damage (Example)

  1. Identify your Pokemon’s Attack stat (e.g., 200).
  2. Identify the Base Power of the move (e.g., Earthquake is 100).
  3. Identify the opponent’s Defense stat (e.g., 150).
  4. Multiply the base damage by modifiers (e.g., STAB x1.5).
  5. Use the tool above to see if it results in a 1HKO or 2HKO.

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Frequently Asked Questions (FAQ)

Does this include the 0.85x – 1.0x random roll? Yes, the standard calculation shown here represents the 100% (maximum) roll. Steps show the full range.

What is STAB? Same Type Attack Bonus. If a Fire Pokemon uses a Fire move, it deals 1.5x more damage.

How do I handle double battles? In double battles, spread moves like Rock Slide deal 0.75x damage if they hit multiple targets.

Can I solve for a missing Attack stat? Yes! Leave the Attack field blank and enter a Target Damage to find the minimum Attack required.

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