Precision

Precision is a primary character attribute. It is used to calculate the derived attribute  Critical Chance, which determines the character's chance of a critical hit against targets at the same level. The real chance to land critical hits is thus determined on a per-target basis; your chance of a critical hit is higher than displayed against targets below your level, but lower against targets above your level.

At level 80, the formula relating Precision to Critical Chance via the Hero Panel is:

Critical Chance = (Precision - 916) / 21

However, in-game testing results don't match the expected values. The actual formula is:

Critical Chance = (Precision - 895) / 21

In other words, Critical Chance is 0% when Precision is 895, and increases by 1% for every 21 Precision above that. Since the minimum value of Precision at level 80 is 1000, this means the minimum Critical Chance at level 80 is 5.0%. From the above equation, it follows 2995 precision is enough to reach the cap of 100% crit chance. This does not take into account flat critical chance effects such as fury and Sigil of Accuracy.

At other levels, the amount of Precision required to increase Critical Chance by 1% increases as you level, in a piecewise-linear fashion - increasing by 0.1 from levels 1-20, 0.2 from 21 to 40, 0.3 from 41 to 60, and 0.4 from 61 to 80.

level		level		level		level		level		level		level		level
1	1.1	11	2.1	21	3.2	31	5.2	41	7.3	51	10.3	61	13.4	71	17.4
2	1.2	12	2.2	22	3.4	32	5.4	42	7.6	52	10.6	62	13.8	72	17.8
3	1.3	13	2.3	23	3.6	33	5.6	43	7.9	53	10.9	63	14.2	73	18.2
4	1.4	14	2.4	24	3.8	34	5.8	44	8.2	54	11.2	64	14.6	74	18.6
5	1.5	15	2.5	25	4.0	35	6.0	45	8.5	55	11.5	65	15.0	75	19.0
6	1.6	16	2.6	26	4.2	36	6.2	46	8.8	56	11.8	66	15.4	76	19.4
7	1.7	17	2.7	27	4.4	37	6.4	47	9.1	57	12.1	67	15.8	77	19.8
8	1.8	18	2.8	28	4.6	38	6.6	48	9.4	58	12.4	68	16.2	78	20.2
9	1.9	19	2.9	29	4.8	39	6.8	49	9.7	59	12.7	69	16.6	79	20.6
10	2.0	20	3.0	30	5.0	40	7.0	50	10.0	60	13.0	70	17.0	80	21.0

Related skills

Utility skills that increase precision

• 
  
   Banner of Discipline
• 
  
   Signet of Fury
• 
  
   Signet of Agility
• 
  
   Conjure Lightning Hammer (while wielding Lightning Hammer)
• 
  
   Signet of Fire

Related traits

Traits that increase precision

•  Signet Mastery — Signets grant a stacking precision buff on use and recharge faster. Cast signet of might whenever you strike a foe below the health threshold.
•  Spotter — Increases precision of nearby allies.
•  Aeromancer's Training — Gain precision while attuned to air. Reduces recharge on all air weapon skills.

Traits that benefit from precision

•  Blood Reaction — A percentage of precision is given as a bonus to ferocity. This bonus is double in berserk mode.
•  Practiced Tolerance — Gain ferocity based on your precision.
•  Ferocious Winds — Gain ferocity based on your precision.
•  Target the Weak — Increases critical-hit chance for each condition on your foe. Gain condition damage based on your precision.

Related equipment

Equipment prefixes that increase precision

This table lists triple-attribute prefixes that have Precision as their major attribute. For other prefixes that affect Precision, see the full listing at item nomenclature.

Prefix	Major attribute(s)	Minor attribute(s)
Captain	Precision	Power  Toughness
Assassin	Precision	Power  Ferocity
Rampager	Precision	Power  Condition Damage

• For trinkets and jewels, Captain's is equivalent to Emerald, Assassin's is equivalent to Opal, and Rampager's is equivalent to Coral.

Upgrade components that increase precision

• Sigil of Perception
• Coral Chunk, Coral Tentacle, Coral Orb
• Emerald Shard, Emerald Crystal, Emerald Orb
• Opal Shard, Opal Crystal, Opal Orb
• Ruby Shard, Ruby Crystal, Ruby Orb

See also: list of runes that increase precision

Related consumables

Consumables that increase precision

Req. Level	Name	Precision	Duration (Minutes)	Other Effect(s)
5	Bowl of Vegetable Stock	20	15	+10 experience from kills
20	Bowl of Tomato Soup	30	15	+10 experience from kills
30	Bowl of Kale Soup	50	30	+40 Vitality, +10 experience from kills
30	Chocolate Chip Cookie	40	30	+50 Healing, +10 experience from kills
60	Minotaur Steak	60	60	+50 Ferocity, +10% experience from kills
75	Bowl of Artichoke Soup	80	30	+60 Vitality, +10 experience from kills
80	Bowl of Curry Pumpkin Soup	100	30	+70 Vitality, +10 experience from kills
80	Bowl of Curry Butternut Squash Soup	100	30	+70 Ferocity, +10% experience from kills
80	Bowl of Fancy Potato and Leek Soup	100	30	+70 Condition damage, +10% experience from kills
80	Bowl of Fire Meat Chili	70	30	+15% Burn duration, +10 experience from kills
80	Bowl of Truffle Ravioli	70	30	+100 Toughness, +10 experience from kills
80	Bowl of Truffle Risotto	70	30	+100 Condition damage, +10 experience from kills
80	Fancy Truffle Burger	70	30	+15% Poison duration, +10% experience from kills
80	Omnomberry Pie	70	30	66% chance to steal life on critical, +10% experience from kills
80	Plate of Truffle Steak	70	30	+100 Power, +10% experience from kills
80	Saffron Stuffed Mushroom	70	30	+200 Condition damage for 30 seconds on a kill, +10% experience from kills
80	Spicy Chocolate Cookie	70	30	+100 Healing, +10 experience from kills
80	Toxic Maintenance Oil	100	30	+10% Condition duration, +10 experience from kills
80	Winterberry Pie	70	45	66% chance to steal life on critical, +10% experience from kills, +30 Magic Find

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Attributes

Primary	Power	Precision Critical Chance
	Toughness Armor	Vitality Health
Secondary	Concentration Boon Duration	Condition Damage	Expertise Condition Duration
	Ferocity Critical Damage	Healing Power
Profession	Guardian	Warrior
	Engineer	Ranger	Thief
	Elementalist	Mesmer	Necromancer
Special	Agony Resistance	Gold Find	Karma Gain
	Magic Find	XP Gain