⚔️ Battle Calculator

Battle Damage Calculator

Calculate precise damage ranges for Pokémon battles in Gen 9

⚔️ Attacker
🛡️ Defender

Enter attacker and defender information to calculate damage range. Based on Gen 9 damage formula.

Battle Damage Calculator Guide - Complete Guide to Precise Battle Damage Calculation

⚔️ What is Damage Calculation?

Pokémon battle damage calculation is a complex formula involving multiple factors: attacker's stats, defender's stats, move power, type effectiveness, STAB bonus, critical hits, random number, and more.

This calculator is based on the official Generation 9 (Gen 9) damage formula and can precisely calculate the minimum, average, and maximum damage, helping you determine whether you can one-shot your opponent or how much damage is needed to defeat them.

Mastering damage calculation is a key skill for becoming a battle master, allowing you to make the right decisions at critical moments.

🎯 How to Use the Battle Damage Calculator?

Step 1: Enter Attacker Information

  • Level: Usually 50 or 100 for battles
  • Attack/Sp. Attack: Choose based on move type (Physical moves use Attack, Special moves use Sp. Attack)
  • Move Power: The move's power value (e.g., "Thunderbolt" is 90)
  • Move Type: The move's type
  • Attacker Types: The attacker Pokémon's types (for STAB calculation)
  • STAB: Check if the move type matches the Pokémon's type (gains 1.5× bonus)
  • Critical Hit: Check if a critical hit is triggered (gains 1.5× bonus)

Step 2: Enter Defender Information

  • Level: The defender Pokémon's level
  • Defense/Sp. Defense: Choose based on the attacker's move type (Physical moves use Defense, Special moves use Sp. Defense)
  • HP: The defender Pokémon's current or maximum HP
  • Defender Types: The defender Pokémon's types (for type effectiveness calculation)
  • Tera Type: If the defender has Terastalized, select its Tera type

Step 3: View Calculation Results

  • Minimum Damage: Damage under the worst random number
  • Average Damage: Expected damage value (most likely result)
  • Maximum Damage: Damage under the best random number
  • Damage Percentage: Percentage of defender's HP dealt as damage
  • KO Information: Shows whether you can one-shot the opponent

🏆 Key Factors in Damage Calculation

1. STAB (Same Type Attack Bonus)

When a move's type matches the Pokémon's type, damage is increased by 1.5×. This is the most common damage bonus in battles and why same-type moves are so important.

Example: Dragonite using "Dragon Pulse" (Dragon-type move) gains 1.5× STAB bonus because Dragonite is Dragon-type.

2. Type Effectiveness

Type effectiveness is one of the most important factors in damage calculation:

  • 4× Super Effective: Deals 4× damage (e.g., Ground vs. Electric+Steel)
  • 2× Super Effective: Deals 2× damage (e.g., Electric vs. Water)
  • 1× Normal: Standard damage
  • 0.5× Not Very Effective: Damage halved
  • 0.25× Not Very Effective: Damage greatly reduced
  • 0× No Effect: Cannot deal damage

3. Critical Hits

Critical hits ignore the defender's stat boosts and deal 1.5× damage. Some moves (like "Air Slash") have higher critical hit rates.

4. Random Number

Each attack's damage randomly fluctuates between 85% and 100%. This is why the calculator shows a damage range instead of a fixed value.

5. Terastal Bonus

When a Terastalized Pokémon uses a move matching its Tera type, it gains an additional 1.5× bonus (stacking with STAB for 2.25× total). This is a signature mechanic of Generation 9 battles.

💡 Optimal Battle Strategies and Damage Calculation Tips

1. OHKO (One-Hit KO) Calculation

In battles, determining whether you can one-shot your opponent is crucial:

  • If minimum damage ≥ opponent's HP, you can 100% one-shot them
  • If maximum damage ≥ opponent's HP, you might be able to one-shot (depends on random number)
  • If average damage is close to opponent's HP, you can consider using it, but there's some risk

Strategy: In critical moments, prioritize moves that guarantee 100% KOs to avoid failures due to random numbers.

2. Damage Range Analysis

Understanding damage ranges helps you make better decisions:

  • High Stability: Small gap between min and max damage, predictable results
  • High Risk High Reward: Low minimum but high maximum damage, suitable for gambling
  • Stable Output: High average damage with stable range, suitable for sustained output

3. Move Selection Strategy

High Power Moves:

  • Pursue one-shot kills
  • Suitable for finishing and critical turns
  • But may have lower accuracy

Medium Power Moves:

  • Balance power and accuracy
  • Suitable for sustained output
  • More stable and reliable

4. Maximize Type Effectiveness

Utilizing type effectiveness can greatly increase damage:

  • Prioritize moves that are 2× or 4× super effective
  • Avoid moves that are 0.5× or 0.25× effective (unless for special tactics)
  • Watch out for opponent's Terastal which may change type matchups

5. Practical Application Tips

  • Pre-calculate: Calculate damage for key matchups before battle to plan strategies
  • Random Number Preparation: Consider worst-case scenarios (85% random number) to ensure strategy stability
  • Critical Hit Consideration: If critical hit rate is high, calculate damage with critical hits
  • Terastal Timing: Calculate damage changes after Terastalizing to choose the best timing

⚡ Frequently Asked Questions

Q: Why is damage a range instead of a fixed value?

A: Because damage calculation includes a random number factor (85%-100%), the actual damage of each attack fluctuates within this range. This is part of the game design, adding variability to battles.

Q: How do STAB and Terastal bonuses stack?

A: If a Pokémon uses a same-type move after Terastalizing, it gains STAB (1.5×) × Terastal bonus (1.5×) = 2.25× total bonus. This is the strongest damage bonus in Generation 9.

Q: How can I determine if I can one-shot my opponent?

A: Check the minimum damage in the calculation results. If minimum damage ≥ opponent's HP, you can 100% one-shot them. If only maximum damage ≥ opponent's HP, there's a chance but no guarantee.

Q: How is critical hit damage calculated?

A: Critical hits ignore the defender's stat boosts (such as Defense boosts from "Iron Defense") and deal 1.5× damage. After checking "Critical Hit", the calculator automatically applies these effects.

Q: What's the difference between Physical and Special moves?

A: Physical moves use the attacker's Attack and defender's Defense for calculation; Special moves use the attacker's Sp. Attack and defender's Sp. Defense for calculation. Be careful to select the correct values when entering data.