Pokémon Weakness Calculator

Why a Calculator Beats a Static Type Chart

The classic 18×18 type chart answers one question at a time — and almost every Pokémon that matters is dual-typed, which the wall chart makes you compute in your head. This Pokémon weakness calculator does the multiplication for you: pick the one or two defending types and every attacking type lands in its true bucket — 4×, 2×, neutral, ½×, ¼× or immune. Flip to attacking mode when you're choosing a move instead of switching a defender.

The math is the part charts hide. Each defending type contributes its own multiplier and they stack by multiplication, so two weaknesses compound into 4×, two resists shrink to ¼×, and a single immunity zeroes the whole line no matter what the other type does. That last rule is the one that wins games: Water/Ground doesn't just resist Electric, it ignores it entirely.

Every Single-Type Matchup, Computed

This table is generated from the same effectiveness data the calculator runs on — 51 super-effective, 61 resisted and 8 immune matchups, the complete gen 6+ chart (unchanged since X & Y added Fairy). Use it for quick single-type lookups; use the calculator above the moment a second type is involved.

Reading Matchups Like a Trainer

Team builders scan for shared weaknesses: three teammates all weak to Ground is how sweeps happen. Check each member's defensive spread here, then look for a partner whose resists cover the gaps — the classic Fire/Water/Grass core exists because the three cover one another's weaknesses almost perfectly. In battle, think in both directions: your Ghost move bouncing off a Normal type and their Fighting move bouncing off your Ghost are the same immunity rule working for and against you. And remember the chart is symmetric in structure but not in content — Steel resists Dragon, but Dragon doesn't resist Steel.