Pokémon/Attack chart

Key
Θ = Super Effective (x2)

O = Normal effectiveness (x1)

∆ = Poor (x0.5)

X = No effect (x0)

Note that for Pokémon with duplicated types, multiply the two levels of effectiveness by each other. This is explained in detail on the Dual type attack chart.

Also note that in the First Generation games, Red, Blue, Green, and Yellow, some weaknesses/resistances are different:
 * [[Image:PkmnType Ice.gif]] moves are 1x effectiveness vs [[Image:PkmnType Fire.gif]], not 0.5x
 * [[Image:PkmnType Bug.gif]] moves are 2x effectiveness vs [[Image:PkmnType Poison.gif]], not 0.5x
 * [[Image:PkmnType Ghost.gif]] moves are 0x effectiveness vs [[Image:PkmnType Psychic.gif]], not 2x
 * [[Image:PkmnType Dark.gif]] and [[Image:PkmnType Steel.gif]] types do not exist.