Heavy Slam Calculator
The level of the Pokémon using Heavy Slam (1-100).
The base Attack stat of the attacking Pokémon.
The weight of the attacking Pokémon.
The base Defense stat of the defending Pokémon.
The weight of the defending Pokémon. The same unit as the attacker will be used.
Additional battle conditions affecting damage.
Average Damage Dealt
Heavy Slam Power
Weight Ratio
Damage Range
The damage is calculated using the standard Pokémon damage formula, where the Base Power of Heavy Slam is determined first by the ratio of the attacker’s weight to the defender’s weight.
What is the Heavy Slam Calculator?
The heavy slam calculator is a specialized tool for Pokémon trainers and competitive players to determine the damage output of the Steel-type move, Heavy Slam. Unlike most attacks with a fixed power, Heavy Slam’s damage is variable, depending entirely on how much the user outweighs its target. This makes it a powerful strategic option for heavy Pokémon but requires careful calculation to predict its effectiveness in battle.
This calculator simplifies the complex damage calculation process. By inputting the attacker’s and defender’s stats—including their respective weights, levels, and combat stats—you can instantly see the move’s Base Power and the potential damage range. This is invaluable for battle preparation, team building, and making smart decisions mid-match. If you’re looking for a general tool, you might find a comprehensive Pokemon damage calculator more suitable.
Heavy Slam Formula and Explanation
Calculating Heavy Slam’s damage is a two-step process. First, you determine the move’s Base Power based on the weight difference. Second, you plug that Base Power into the standard Pokémon damage formula.
Step 1: Base Power Calculation
The Base Power is determined by the ratio of the attacker’s weight to the defender’s weight. The heavier the user is in comparison, the higher the power.
| Weight Ratio (Attacker / Defender) | Base Power |
|---|---|
| 5x or greater | 120 |
| 4x to 4.99x | 100 |
| 3x to 3.99x | 80 |
| 2x to 2.99x | 60 |
| Less than 2x | 40 |
Step 2: General Damage Formula
Once the Base Power is known, it’s used in this formula:
Damage = ( ( ( (2 * Level / 5) + 2) * Base Power * Attack / Defense) / 50) + 2 ) * Modifiers
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Level | The attacker’s current level. | N/A | 1 – 100 |
| Base Power | The calculated power of Heavy Slam from Step 1. | N/A | 40 – 120 |
| Attack | The attacker’s Attack stat. | N/A | 5 – 500+ |
| Defense | The defender’s Defense stat. | N/A | 5 – 500+ |
| Modifiers | Bonuses like STAB, Critical Hits, Type Effectiveness, etc. | Multiplier | 0.25x – 6x+ |
For those interested in the meta-game, understanding the best steel type moves can provide context on why a heavy slam calculator is so useful.
Practical Examples
Example 1: Snorlax vs. Gengar
A classic matchup between a heavy attacker and a light defender.
- Inputs:
- Attacker: Level 50 Snorlax (Attack: 178, Weight: 460 kg)
- Defender: Level 50 Gengar (Defense: 112, Weight: 40.5 kg)
- Modifiers: STAB applied (as Snorlax can learn it via TM)
- Calculation:
- Weight Ratio: 460 / 40.5 = 11.35x
- Base Power: Since the ratio is over 5x, the Base Power is 120.
- Result: The heavy slam calculator shows an average damage of ~120-142 HP.
Example 2: Aggron vs. Gardevoir (Changing Units)
This example shows how unit selection doesn’t affect the underlying math.
- Inputs (in lbs):
- Attacker: Level 50 Aggron (Attack: 178, Weight: 793.7 lbs)
- Defender: Level 50 Gardevoir (Defense: 117, Weight: 106.7 lbs)
- Modifiers: STAB applied (Aggron is Steel-type)
- Calculation:
- Weight Ratio: 793.7 / 106.7 = 7.43x (Note: the ratio is the same whether using kg or lbs)
- Base Power: The ratio is over 5x, so the Base Power is 120.
- Result: The heavy slam calculator outputs an average damage of ~158-188 HP against Gardevoir, which is super effective. A detailed Snorlax build guide might pair well with this knowledge.
How to Use This Heavy Slam Calculator
- Enter Attacker’s Stats: Input the Level, Attack stat, and Weight of the Pokémon using Heavy Slam.
- Select Weight Unit: Choose between kilograms (kg) and pounds (lbs). The same unit will be assumed for the defender.
- Enter Defender’s Stats: Input the Defense stat and Weight of the Pokémon being hit.
- Apply Modifiers: Check the boxes for STAB (if the attacker is a Steel-type) and Critical Hit for more precise calculations.
- Review Results: The calculator instantly displays the move’s Base Power, the weight ratio, and the estimated damage range. The chart provides a visual representation of the minimum and maximum damage.
Interpreting the results is crucial for competitive pokemon strategy. A wide damage range might make an attack risky, while high, consistent damage can secure a knockout.
Key Factors That Affect Heavy Slam Damage
- The Weight Ratio: This is the single most important factor. A massive difference in weight is required to reach the 120 Base Power cap.
- Attacker’s Attack Stat: Higher Attack directly translates to more damage. This is a core component of all physical attacks.
- Defender’s Defense Stat: A high Defense stat on the target Pokémon can significantly reduce the damage taken from Heavy Slam.
- Attacker’s Level: Higher-level Pokémon inherently do more damage due to the formula’s structure.
- STAB (Same-Type Attack Bonus): If a Steel-type Pokémon uses Heavy Slam, the move gets a 50% power boost, making it significantly more threatening.
- Type Effectiveness: Heavy Slam is a Steel-type move. It will do double damage to Fairy, Ice, and Rock types but half damage to Fire, Water, Electric, and other Steel types. You should always consult a type effectiveness chart.
Frequently Asked Questions (FAQ)
- What happens if the target has used Minimize?
- In modern generations, if a target has used Minimize, Heavy Slam will not only always hit, but it will also deal double damage.
- Does Heavy Slam work on Dynamax or Terastalized Pokémon?
- Heavy Slam will fail if used against a Dynamax Pokémon. However, it functions normally against Terastalized Pokémon, factoring in the new type if applicable.
- How are the units handled in this heavy slam calculator?
- You can input weight in either kilograms (kg) or pounds (lbs). The calculator automatically converts everything to a consistent internal unit (kg) to ensure the weight ratio is calculated correctly.
- Is a higher weight always better for a Heavy Slam user?
- Generally, yes. To maximize Heavy Slam’s potential, you want the user to be as heavy as possible relative to common threats in the metagame.
- Which Pokémon are the best users of Heavy Slam?
- Extremely heavy Pokémon like Snorlax, Aggron, Copperajah, Celesteela, and Groudon are prime candidates, especially if they are Steel-types that get STAB.
- What’s the difference between Heavy Slam and Heat Crash?
- They share the exact same mechanic and Base Power tiers. The only difference is that Heavy Slam is a Steel-type move, while Heat Crash is a Fire-type move.
- Does an item like a Choice Band affect Heavy Slam?
- Yes. Items that boost the Attack stat, like a Choice Band, are applied in the final damage calculation and will increase Heavy Slam’s damage output significantly.
- What if my Pokémon’s weight is lower than the target’s?
- If the attacker is lighter than the target, the weight ratio will be less than 1, and Heavy Slam will have its minimum Base Power of 40.