Pokemon Diamond and Pearl - Damage Calculation

Damage Formula

int(int(int(2*L/5+2)*A*P/D)/50)+2

where:

• L = Attacker's level
• A = Attacker's current Attack/Special Attack value
• P = Attack's base damage
• D = Defender's current Defense/Special Defense

For physical attacks, use the Attack and Defense values. For special attacks, use the Special Attack and Special Defense values. Unlike in previous versions, it no longer depends on the type whether an attack is physical or special. See the Attack List or Attack Categories to see how the attack is classified.

Stat Stages

Stat stages refer to levels that increase or decrease stats during a battle. Each stat stage has 13 different levels.

Stat Stage	-6	-5	-4	-3	-2	-1	0	1	2	3	4	5	6
Stat Multiplier	10/40	10/35	10/30	10/25	10/20	10/15	10/10	15/10	20/10	25/10	30/10	35/10	40/10

That stat scale applies to the stat stages for Attack, Defense, Speed, Special Attack, and Special Defense. At the start of a battle, each Pokemon's stat stages begin at 0. The stat stages for a Pokemon are reset to 0 when the Pokemon is switched.

To apply stat stages, multiply the stat by the stat multiplier for the corresponding stat stage.

The term "stat stages" refers to those for Attack, Defense, Speed, Special Attack, and Special Defense, as well as those for evasion and Accuracy (see Accuracy check).

Battle Chart

Attack types are the rows; Pokemon types are the columns.

Attack Type	NOR	FIG	FLY	POI	GRO	ROC	BUG	GHO	STE	FIR	WAT	GRA	ELE	PSY	ICE	DRA	DAR
NORMAL	1x	1x	1x	1x	1x	1/2	1x	0	1/2	1x	1x	1x	1x	1x	1x	1x	1x
FIGHTING	2x	1x	1/2	1/2	1x	2x	1/2	0	2x	1x	1x	1x	1x	1/2	2x	1x	2x
FLYING	1x	2x	1x	1x	1x	1/2	2x	1x	1/2	1x	1x	2x	1/2	1x	1x	1x	1x
POISON	1x	1x	1x	1/2	1/2	1/2	1x	1/2	0	1x	1x	2x	1x	1x	1x	1x	1x
GROUND	1x	1x	0	2x	1x	2x	1/2	1x	2x	2x	1x	1/2	2x	1x	1x	1x	1x
ROCK	1x	1/2	2x	1x	1/2	1x	2x	1x	1/2	2x	1x	1x	1x	1x	2x	1x	1x
BUG	1x	1/2	1/2	1/2	1x	1x	1x	1/2	1/2	1/2	1x	2x	1x	2x	1x	1x	2x
GHOST	0	1x	1x	1x	1x	1x	1x	2x	1/2	1x	1x	1x	1x	2x	1x	1x	1/2
STEEL	1x	1x	1x	1x	1x	2x	1x	1x	1/2	1/2	1/2	1x	1/2	1x	2x	1x	1x
FIRE	1x	1x	1x	1x	1x	1/2	2x	1x	2x	1/2	1/2	2x	1x	1x	2x	1/2	1x
WATER	1x	1x	1x	1x	2x	2x	1x	1x	1x	2x	1/2	1/2	1x	1x	1x	1/2	1x
GRASS	1x	1x	1/2	1/2	2x	2x	1/2	1x	1/2	1/2	2x	1/2	1x	1x	1x	1/2	1x
ELECTRIC	1x	1x	2x	1x	0	1x	1x	1x	1x	1x	2x	1/2	1/2	1x	1x	1/2	1x
PSYCHIC	1x	2x	1x	2x	1x	1x	1x	1x	1/2	1x	1x	1x	1x	1/2	1x	1x	0
ICE	1x	1x	2x	1x	2x	1x	1x	1x	1/2	1/2	1/2	2x	1x	1x	1/2	2x	1x
DRAGON	1x	1x	1x	1x	1x	1x	1x	1x	1/2	1x	1x	1x	1x	1x	1x	2x	1x
DARK	1x	1/2	1x	1x	1x	1x	1x	2x	1/2	1x	1x	1x	1x	2x	1x	1x	1/2