Pokémon/Attack chart

Key

Θ = Super Effective (x2)
O = Normal Attack (x1)
∆ = Poor (x0.5)
X = None (x0)

Pokémon Move	Pokémon Type	File:PkmnType Normal.gif	File:PkmnType Fire.gif	File:PkmnType Water.gif	File:PkmnType Electric.gif	File:PkmnType Grass.gif	File:PkmnType Ice.gif	File:PkmnType Fighting.gif	File:PkmnType Poison.gif	File:PkmnType Ground.gif	File:PkmnType Flying.gif	File:PkmnType Psychic.gif	File:PkmnType Bug.gif	File:PkmnType Rock.gif	File:PkmnType Ghost.gif	File:PkmnType Dragon.gif	File:PkmnType Dark.gif	File:PkmnType Steel.gif
File:PkmnType Normal.gifNo														No ∆	X
File:PkmnType Fire.gifFir			No ∆	No ∆		Θ	Θ						Θ	No ∆		No ∆		Θ
File:PkmnType Water.gifWa			Θ	No ∆		No ∆				Θ				Θ		No ∆
File:PkmnType Electric.gifEl				Θ	No ∆	No ∆				No ∆	Θ					No ∆
File:PkmnType Grass.gifGra			No ∆	Θ		No ∆			No ∆	Θ	No ∆		No ∆	Θ		No ∆
File:PkmnType Ice.gifIc				No ∆		Θ	No ∆			Θ	Θ					Θ
File:PkmnType Fighting.gifFig		Θ					Θ		No ∆		No ∆	No ∆	No ∆	Θ	X
File:PkmnType Poison.gifPo						Θ			No ∆	No ∆			Θ	No ∆	No ∆
File:PkmnType Ground.gifGro			Θ		Θ	No ∆			Θ		X		No ∆	Θ	X
File:PkmnType Flying.gifFl					No ∆	Θ		Θ					Θ	No ∆
File:PkmnType Psychic.gifPs								Θ	Θ			No ∆
File:PkmnType Bug.gifBu			No ∆			Θ		No ∆	Θ		No ∆	Θ			No ∆
File:PkmnType Rock.gifRo			Θ				Θ	No ∆		No ∆	Θ		Θ		X
File:PkmnType Ghost.gifGh		X										X			Θ
File:PkmnType Dragon.gifDr																Θ
File:PkmnType Dark.gifDa												Θ			Θ
File:PkmnType Steel.gifSt			No ∆	No ∆										Θ	X			No ∆

Note that Pokémon with duplicated types are weak or strong respectivly.
For example, Dregonite, which is flying/dragon type, is 4x weak against ice type.