Type Calculator

The Pokemon type system is built around 18 distinct types, each with its own set of strengths and weaknesses. When a move hits a defending Pokemon, the game checks the attacking move's type against the defender's type to determine a damage multiplier. A super effective hit deals 2x damage, a resisted hit deals 0.5x damage, and an immunity means the move does 0x damage — it misses entirely.

Things get more interesting with dual-typed Pokemon. The multipliers for each of the defender's types are multiplied together, which is how you end up with 4x weaknesses (both types are weak to the same attacking type) and 0.25x resistances (both types resist the attacker). This layered system is what makes team building and battle strategy so deep.

Fire is one of the most offensively versatile types, hitting Grass, Ice, Bug, and Steel for super effective damage. Water covers Fire, Ground, and Rock, making it a reliable choice on almost any team. Electric types are powerful but completely useless against Ground — Electric moves have zero effect. Normal and Fighting moves can't touch Ghost-type Pokemon at all, and the reverse is also true for Normal's immunity to Ghost.

Dragon is a unique type that resists the four classic starter types (Fire, Water, Grass, and Electric) but is weak to itself and to Ice. Perhaps the most important defensive matchup to know is Fairy's complete immunity to Dragon — Fairy was introduced in Generation VI specifically to balance the previously dominant Dragon type.

Dual typing creates unique defensive profiles that can be far stronger — or weaker — than either type alone. Water/Ground is a classic example: it has only one weakness (Grass at 4x) but gains a full immunity to Electric, which would normally threaten Water. Steel/Fairy is another powerhouse combination that resists a staggering 10 out of 18 types.

On the flip side, some dual types share common weaknesses that stack up. Rock/Ground, for instance, is doubly weak to both Water and Grass (each at 4x), which can make it a risky pick despite solid offensive coverage. Understanding these interactions is the key to building a well-rounded team.

Each multiplier level tells you exactly how a matchup plays out. At 0x, the defender is immune and takes no damage at all — the move simply fails. At 0.25x, the defender doubly resists the attack, taking only a quarter of the normal damage. A 0.5x multiplier means a single resistance, cutting damage in half. Neutral hits land at 1x, dealing the standard amount. Super effective moves hit at 2x for double damage, and the devastating 4x multiplier occurs when both of a dual-typed Pokemon's types are weak to the same attacking type.