Skip to tool content
Toolioz logoToolioz

Pokemon Dual-Type Weakness Calculator

A Pokemon dual-type weakness calculator multiplies both defending types against every attacking type on the Generation 6 chart. Fairy was added in 2013. The 18-type grid has not changed, so the weakness list does not need patch updates.

Quick Summary & Direct Answer
Pokemon

How are dual-type Pokemon weaknesses calculated?

Each attacking type is multiplied by its effectiveness against both defending types. Two 2× weaknesses become 4×. A 2× and a ½× cancel to 1×. A 0 on either type is an immunity. The chart is the Generation 6 table used since 2013.

Key Takeaways

  • Weakness is defensive: what hits this pairing hard.
  • 4× means both types are weak to that attack.
  • Abilities, item effects, and Terastallization are not applied.
  • The full Pokemon type chart sits under the weakness buckets.

Type effectiveness is documented on Bulbapedia's type page.

4× weakness

Both types are weak
Rock

2× weakness

One type is weak
WaterElectric

1× neutral

No net modifier
NormalIcePoisonFlyingPsychicGhostDragonDark

½× resist

One type resists
FireFightingSteelFairy

¼× resist

Both types resist
GrassBug

Immune

One type is immune
Ground

Pokemon type chart

Rows attack, columns defend. 2 is super effective, ½ resists, 0 is immune. This is the chart in use since Fairy was added in 2013.

Atk \\ Defnorfirwatelegraicefigpoigroflypsybugrocghodradarstefai
Normal111111111111½011½1
Fire1½½122111112½1½121
Water12½1½111211121½111
Electric112½½111021111½111
Grass1½21½11½2½1½21½1½1
Ice1½½12½1122111121½1
Fighting2111121½1½½½20122½
Poison1111211½½111½½1102
Ground1212½112101½211121
Flying111½21211112½111½1
Psychic1111112211½11110½1
Bug1½1121½½1½211½12½½
Rock121112½1½2121111½1
Ghost011111111121121½11
Dragon1111111111111121½0
Dark111111½11121121½1½
Steel1½½½121111112111½2
Fairy1½11112½11111122½1

Frequently asked questions

Each attacking type is multiplied against both defending types from the Generation 6 chart. 2 × 2 is a 4× weakness. 2 × 0.5 cancels to 1×. A 0 on either type is an immunity.

Explore Related Tools

Minecraft Circle Generator

Maps Minecraft circles and spheres from a diameter. Pixel math does not change with patches.

Try tool

D&D Dice Roller

Rolls 5e dice notation including advantage, 4d6kh3, and damage plus modifiers.

Try tool

Publisher notes · reviewed 29 October 2026

Dual-type weakness multiplies two independent type matchups

Each attacking type is looked up against both defending types on the Generation 6 chart, then multiplied. 2 × 2 is a 4× weakness. 2 × ½ cancels to 1×. A 0 on either type is an immunity. Fairy was added in X and Y in 2013. The 18×18 attacking matrix has been stable since then.

What this page does not apply

Abilities such as Levitate, Flash Fire, or Thick Fat change a matchup after the type chart. Terastallization replaces the defensive typing for a turn. Those effects are not multiplied in. The tool answers “what does the type chart say about this pairing,” which is the usual weakness-search intent, and still prints the full Pokemon type chart for chart queries.

Worked examples

  • Fire / Flying

    Rock is 2× versus Fire and 2× versus Flying, so Rock is 4×. Electric is 2× versus Flying and 1× versus Fire, so Electric is 2×. Ground is 0 versus Flying, so Ground is immune even though it is 2× versus Fire.

Limits of this page

  • Abilities, items, weather, and Terastallization are omitted.
  • Inverse battles and type-changing moves are omitted.

Sources