A type chart shows which modifiers are applied to move types when attacking Pokémon of each type. Please note that this only covers single types, not pairs. To get a dual-typed Pokémon's matchup against a specific move type, go across the table's columns to each of the types, see what the effectiveness of the move is against both, and multiply the effectiveness together: in this way a Template:Type2 move would hit for 4× damage on a Bug/Grass Pokémon, while a Template:Type2 move used against the same would do only a quarter of its normal damage. The type chart differs depending on the generation of games it is from.

Generation I

This system is no longer in use, and was revamped in Generation II to adjust some ratios and to add the Dark- and Template:Type2s.

× Defending type
                             
A
t
t
a
c
k
i
n
g

t
y
p
e
  ½×
  ½× ½× ½× ½×
  ½× ½×
  ½× ½× ½× ½×
  ½× ½×
  ½× ½×
  ½× ½× ½×
 
  ½× ½× ½× ½×
  ½× ½× ½×
  ½× ½× ½× ½× ½× ½×
  ½× ½× ½×
  ½×
  ½× ½×
 
These numbers are suitable for Generation I only.


Later generations

× Defending type
                                 
A
t
t
a
c
k
i
n
g

t
y
p
e
  ½× ½×
  ½× ½× ½× ½×
  ½× ½× ½×
  ½× ½× ½× ½×
  ½× ½×
  ½× ½× ½×
  ½× ½× ½× ½× ½× ½×
  ½× ½×
  ½× ½× ½× ½×
  ½× ½× ½× ½×
  ½× ½× ½×
  ½× ½× ½× ½× ½× ½× ½×
  ½× ½× ½×
  ½× ½×
  ½× ½× ½× ½×
  ½×
  ½× ½× ½×
These numbers are suitable for all generations aside from Generation I.


Differences

The biggest difference between the two charts is the addition of the Dark and Steel types to the second chart. Among relationships that were already in the chart, Bug was made 0.5x effective against Poison instead of 2x, Poison was changed from 2x to 1x against Bug, and Bug was changed from 1x to 0.5x against Ghost. Ghost was made 2x against Psychic, as opposed to 0x. Also, Ice was adjusted to deal 0.5x damage to Fire as opposed to 1x.

See also