Diablo 2 Breakpoints Table FHR FBR IAS FCR

Character	Weapon/Skill/Form	Block Frames
		17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1
Amazon	1-handed swinging weapons*	0	4	6	11	15	23	29	40	56	80	120	200	480
	Other weapons													0	13	32	86	600
Assassin	All													0	13	32	86	600
Barbarian	All											0	9	20	42	86	280
Druid	Human							0	6	13	20	32	52	86	174	600
	Werebear						0	5	10	16	27	40	65	109	223
	Werewolf									0	7	15	27	48	86	200
Necromancer	All							0	6	13	20	32	52	86	174	600
Paladin	Without Holy Shield													0	13	32	86	600
	With Holy Shield																0	86
Sorceress	All									0	7	15	27	48	200	200

FCR

Frames	Amazon	A3 Mercenary	Assassin	Druid Human	Druid WW	Druid WB	Pal/Nec	Barb/Sorc
19	0
18	7	0		0
17	14	10		4
16	22	15	0	10	0	0
15	32	30	8	19	6	7	0
14	48	40	16	30	14	15	9
13	68	60	27	46	26	26	18	0
12	99	90	42	68	40	40	30	9
11	152	140	65	99	60	63	48	20
10			102	163	95	99	75	37
9			174		157	163	125	63
8								105
7								200

FHR

Character	Weapon	Hit Recovery Frames
		17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2
Amazon	All							0	6	13	20	32	52	86	174	600
Assassin	All									0	7	15	27	48	86	200
Barbarian	All									0	7	15	27	48	86	200
Act 5 mercenary	All									0	7	15	27	48	86	200
Druid, human	1-handed swinging weapons*				0	3	7	13	19	29	42	63	99	174	456
	Other weapons					0	5	10	16	26	39	56	86	152	377
Druid, werebear	All					0	5	10	16	24	37	54	86	152	360
Druid, werewolf	All											0	9	20	42	86	280
Act 3 mercenary	All	0	5	8	13	18	24	32	46	63	86	133	232	600
Necromancer	All					0	5	10	16	26	39	56	86	152	377
Paladin	Spears and staves					0	3	7	13	20	32	48	75	120	280
	Other weapons									0	7	15	27	48	86	200
Act 1 mercenary	All							0	6	13	20	32	52	86	174	600
Sorceress	All			0	5	9	14	20	30	42	60	86	142	280
Act 2 mercenary	All			0	5	9	14	20	30	42	60	86	142	280

* 1-handed swinging weapons include 1-handed axes, clubs, 1-handed maces, orbs, scepters, 1-handed swords, 2-handed swords wielded in one hand, throwing axes, and wands.



Chance to hit

100 * AR / (AR + DR) * 2 * alvl / (alvl + dlvl)
AR = Attack Rating; alvl = Level of Attacker; dlvl = Level of Defender; DR = Defense Rating

Note: Attacks will never have less than 5% chance to hit nor more than 95% chance to hit.

Final chance to hit is truncated.

Example

I have an AR of 10,000. I am lvl85 (attacker) and the Defender is lvl90 with a defense of 5000

= 100 * AR / (AR + DR) * 2 * alvl / (alvl + dlvl)
= 100 * 10000/ (10000 + 5000) * 2 * 85/ ( 85 + 90)
= 1000000/(10000 + 5000) * 2 * 85/(85 + 90)
= 1000000/(15000) * 2 * 85/(175)
= 1000000/(15000) * 2 * 85/(175)
= 66.667 * 2 * 85/175
= 133.333 * 85/175
= 11333.333/175
= 64.761% chance to hit.

Base Attack Rating

(Your attack rating without +AR or +Ar% from equipment, charms or skills)

= (Dex * 5) - 35 + ClassBonus

The ClassBonus is:

20 for Barbarians and Paladins
15 for Assassins
5 for Amazons and Druids
-10 for Necromancers
-15 for Sorceresses

Example

Any lvl Necromancer with 200 Dex.

= (Dex * 5) - 35 + ClassBonus
= (200 * 5) - 35 + (-10)
= (1000) - 35 + (-10)
= 965 + (-10)
= 955AR

Base Defense Rating

(Your Defense rating without Defense, +Def or +Def% from equipment, charms or skills)

= Dex / 4 (rounding down)

Example

Any lvl char with 179 Dex.

= Dex/4 (rounding down)
= 179/4 (rounding down)
= 44.75 (rounding down)
= 44

Chance to cause Knockback

Vs. large (eLarge): 32/128 = 25%
Vs. small (eSmall): 128/128 = 100%
everyone else: 64/128 = 50%

Open Wounds

Damage per frame:
Clvl=1-15: ((9*Clvl+31)/256)) * Modifier
Clvl=16-30: ((18*Clvl-104)/256) * Modifier
Clvl=31-45: ((27*Clvl-374)/256) * Modifier
Clvl=46-60: ((36*Clvl-779)/256) * Modifier
Clvl=61-99: ((45*Clvl-1319)/256) * Modifier

Modifier:
Triggers on a Player with attacker using a Melee Attack: 0.25
Triggers on a Player with attacker using Ranged Attack: 0.125
Triggers on a Boss Monster with attacker using Ranged or Melee: 0.5
Trigger on Other Targets with attacker using Ranged or Melee: 1

Open Wounds has a duration of 200 Frames (8 Seconds) and will reset the timer if reapplied. It's not actual damage but a Negative Life Regenration.

E.g:

Lvl80 Char using melee attack on a normal monster (Other Target)
Clvl=61-99: ((45*Clvl-1319)/256) * Modifier
= ((45*80-1319)/256) * 1
= ((3600-1319)/256)
= (2281/256) * 1
= 8.91015625 * 1
= 8.91015625 Damage per Frame.

For Damage per second, do (Damage per frame * 25)

8.91015625 * 25
= 222.75390625 Damage per second.

Thanks to http://strategy.diabloii.net/news.php?id=551