pokemon effectiveness calculator

What This Pokémon Effectiveness Calculator Does

This tool quickly tells you how effective a move type is against a target Pokémon’s type combination. If your opponent is dual-type (for example, Water/Flying), the calculator multiplies both matchups together. That means you get accurate outputs like 4× super effective, 0.5× resisted, or 0× no effect.

You can also run a full analysis to see which attacking types are strongest against a selected defender. This is useful when team building, picking coverage moves, or deciding which Pokémon to switch in.

How Type Effectiveness Works

In Pokémon battles, every move has a type, and every Pokémon has one or two types. The matchup between those types modifies damage.

• 2× = super effective
• 0.5× = not very effective
• 0× = no effect (immunity)
• 1× = neutral damage

For dual-type defenders, multipliers stack: if one type is weak (2×) and the other resists (0.5×), the result is neutral (1×). If both are weak, you get 4×. If both resist, you get 0.25×.

Step-by-Step: Using the Calculator

1) Choose the attacking move type

Select the move’s type, such as Electric, Ground, Fairy, or Ice.

2) Choose the defender’s type(s)

Pick the primary type and optionally the secondary type. Leave the second slot as “None” for single-type Pokémon.

3) Optionally apply STAB

If the attacking Pokémon shares the same type as the move, STAB usually increases damage by 1.5×. Toggle this on to see the final multiplier including that bonus.

4) Click Calculate

You’ll get the exact multiplier and a plain-language label (such as “super effective” or “immune”).

Battle Strategy Tips

• Look for immunities: Switching into a 0× move can completely shut down an opponent’s turn.
• Use coverage moves: A diverse movepool helps you avoid getting hard-walled by resistances.
• Punish 4× weaknesses: These are often game-changing opportunities.
• Respect defensive cores: Dual typings can erase weaknesses and create awkward neutral zones.
• Remember hidden factors: Abilities (like Levitate), items, weather, and terrain can change practical outcomes.

Common Examples

Electric vs Water/Flying

Electric is super effective against Water (2×) and super effective against Flying (2×), for a total of 4×.

Ground vs Flying

Flying is immune to Ground, so the result is 0×, regardless of Ground’s effect on the other type.

Fire vs Steel/Grass

Fire is super effective against Steel (2×) and super effective against Grass (2×), producing 4×.

Limitations You Should Know

This calculator focuses on standard type-chart math. Real battle damage also depends on level, stats, move base power, abilities, held items, status conditions, weather, and random damage rolls. Treat this tool as the type multiplier engine, not a full damage simulator.

Final Thoughts

If you want faster decisions in casual play, ranked ladder matches, or challenge runs, mastering type effectiveness gives you a huge edge. Use this calculator before battles, during team planning, or while learning matchups. Over time, these multipliers become instinct—and that is often the difference between a close loss and a clean win.