How Heavy Slam Works
- 120 BP if Target ≥ Attacker×0.5
- 100 BP if Target ≥ Attacker×0.33
- 80 BP if Target ≥ Attacker×0.25
- 60 BP if Target ≥ Attacker×0.2
- 40 BP if Target < Attacker×0.2
Heavy Slam’s power isn’t fixed—it changes based on your Pokémon’s weight compared to the target’s. Use the calculator below to instantly check its base power and optimize your battles!
How Heavy Slam Works
This Steel-type move deals more damage if your Pokémon is significantly heavier than the opponent. The exact power is determined by this formula:
- 120 BP → Target weighs ≥50% of your Pokémon’s weight
- 100 BP → Target weighs ≥33%
- 80 BP → Target weighs ≥25%
- 60 BP → Target weighs ≥20%
- 40 BP → Target weighs <20%
Example:
- A 400 kg Steelix vs. a 100 kg Charizard = 80 BP (25% ratio).
- A 300 kg Snorlax vs. a 6 kg Pikachu = 40 BP (extreme difference).
How to use Heavy Slam Calculator
- Enter your Pokémon’s weight (e.g., Celesteela – 999.9 kg).
- Enter the target’s weight (e.g., Jigglypuff – 5.5 kg).
- See the result! (e.g., “40 BP – Max power difference!”)
Pro Tip: For precise calculations in competitive battles, check your opponent’s weight using in-game data or resources like the Pokémon Fire Red Damage Calculator for classic matchups.
Best Pokémon for Heavy Slam
Heavy Slam shines on heavy Steel-types, including:
Celesteela (999.9 kg) – Highest weight in the game!
Metagross (550.0 kg) – Strong and heavy.
Aggron (360.0 kg) – Great for mid-weight matchups.
Avoid Using Against:
Light Pokémon (e.g., Flabébé – 0.1 kg) – Always 40 BP.
Opponents with “Light Metal” – Halves their weight, reducing damage.
Competitive Tip:
- Pair Heavy Slam with “Heavy Metal” (ability) to double your weight for calculation.
- Avoid “Autotomize” (reduces user’s weight, weakening Heavy Slam).
Heavy Slam vs. Other Weight-Based Moves
While Heavy Slam depends on weight ratios, other moves like Gyro Ball rely on Speed differences. For moves where both factors matter (e.g., Heat Crash), tools like the VGC Damage Calculator can help simulate battle scenarios.
FAQs – Heavy Slam Explained
Does Heavy Slam work with “Heavy Metal”?
Yes! The ability doubles your Pokémon’s weight for damage calculation.
Is Heavy Slam better than Gyro Ball?
Depends! Heavy Slam favors heavy Pokémon, while Gyro Ball is stronger for slow Pokémon.
Can Heavy Slam one-shot light Pokémon?
Often yes! Against very light foes (e.g., Pikachu), it hits at 40 BP but with a massive type advantage.