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 where the primary Precision attribute is 1000, and 21 Precision grants 1% of Critical Chance (per the table below), the formula relating Precision to Critical Chance via the Hero Panel is:

Critical Chance (%) = 5 + [ (Precision - 1000) / 21 ]

Critical Chance = (Precision - 895 ) / 21

In other words, the minimum Critical Chance is 5%, and Critical Chance increases by 1% for every 21 Precision above 1000. 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 (which reduces the value to 2470), Sigil of Accuracy, and many traits.

Precision required to increase critical chance by 1%[edit]

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.

Critical Chance (%) = 5 + [ (Precision - Primary_attribute_base) / precision_per_1%_critical_chance ]

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

Example:

A character at level 2 has a base Precision of 44.
They receive a bonus of +2 Precision from the item Progeny Gloves, bringing their total Precision to 46.
From the table above, the level 2 precision_per_1%_critical_chance coefficient is 1.2.
Their critical chance is therefore given by 5 + [ (46 - 44) / 1.2 ] which equates to 6.67% Critical Chance.

Related skills[edit]

Utility skills that increase precision

Signet of Fury — Signet of Fury (effect): 180 Precision; Active Bonus (4s): 360 Precision, 360 Ferocity
Signet of Agility — Signet of Agility: 180 Precision
Conjure Lightning Hammer — Conjure Lightning Attributes: 75 Ferocity, 180 Precision
Signet of Fire — Signet of Fire (effect): 180 Precision

Elite skills that increase precision

Lich Form — Precision: +1,000

Related traits[edit]

Traits that increase precision

Right-Hand Strength (Radiance) — Your precision is increased. Gain increased power while wielding a one-handed weapon in your main hand. Main-hand sword skills gain reduced recharge.
Attacker's Insight (Spellbreaker) — Gain Insight when disabling foes or removing boons. Full Counter refreshes all burst skills on hit. Disables include stun, daze, knockback, pull, knockdown, sink, float, launch, taunt and fear.
Pack Alpha (Beastmastery) — Your pet's attributes are improved and pet skills gain recharge reduction. Improved attributes are power, condition damage, precision, toughness, and vitality.
Silent Scope (Deadeye) — Gain precision. Gain additional precision while wielding a rifle. Enter stealth when you dodge roll with a rifle equipped.
Be Quick or Be Killed (Deadeye) — Gain quickness when marking a foe. Your power and precision are increased while under this effect.
Furious Demise (Curses) — Gain fury when entering shroud. Gain additional precision.

Traits that convert to precision

Elements of Rage (Weaver) — Gain a bonus to all damage dealt for a period of time when attuned to a single element. Gain precision based on a percentage of your vitality.

Traits that benefit from precision

Wounding Precision (Arms) — Gain expertise based on your precision.
Blood Reaction (Berserker) — A percentage of precision is given as a bonus to ferocity. This bonus is doubled in berserk mode.
Practiced Tolerance (Critical Strikes) — Gain ferocity based on your precision.
Ferocious Winds (Air) — Gain ferocity based on your precision.
Target the Weak (Curses) — Increases critical-hit chance for each condition on the foe. Gain condition damage based on your precision.

Related equipment[edit]

Equipment prefixes that increase precision[edit]

This table lists prefixes that have Precision as their Major attribute. For other prefixes that affect Precision, see the full listing at attribute combinations.

Prefix	Major attribute(s)	Minor attribute(s)
Captain's	Precision	Power Toughness
Assassin's	Precision	Power Ferocity
Rampager's	Precision	Power Condition Damage
Commander's	Power Precision	Toughness Concentration
Marauder	Power Precision	Vitality Ferocity
Seraph	Precision Condition Damage	Healing Power Concentration

For trinkets and jewels, Captain is equivalent to Emerald, Assassin is equivalent to Opal, and Rampager is equivalent to Coral. Commander is equivalent to Burl, Marauder is equivalent to Ebony.

Upgrade components that increase precision[edit]

See also: list of runes that increase precision

Related consumables[edit]

Food Items that increase precision[edit]

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	30	+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 Sawgill Mushroom Risotto	150	30	+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 Ghost	70	30	66% chance to steal life on critical, +15% experience from kills
80	Omnomberry Pie	70	30	66% chance to steal life on critical, +10% experience from kills
80	Scoop of Mintberry Swirl Ice Cream	70	30	66% chance to steal life on critical, +10% experience from kills, +10% karma
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	Winterberry Pie	70	30	66% chance to steal life on critical, +10% experience from kills, +30 Magic Find
80	Dragon's Revelry Starcake	45	30	+45 All Attributes, +20% Magic Find, +10 experience from kills
80	Red Lentil and Flatbread Feast	45	60	-15% Incoming Condition Duration, +45 All Attributes, +1% All Experience Gained

Utility Items that increase Precision[edit]

Item	+Precision	Other Effects	Duration
Thesis on Basic Accuracy	Gain 40 Precision when health above 90%	+10% Experience from kills.	60 minutes
Thesis on Accuracy	Gain 60 Precision when health above 90%	+10% Experience from kills.	60 minutes
Thesis on Calculated Accuracy	Gain 120 Precision when health above 90%	+10% Experience from kills.	60 minutes
Thesis on Learned Accuracy	Gain 160 Precision when health above 90%	+10% Experience from kills.	60 minutes
Thesis on Masterful Accuracy	Gain 200 Precision when health above 90%	+10% Experience from kills.	60 minutes
Lump of Crystallized Nougat	+100 Precision on reviving an ally	+100 Toughness, Condition Damage +10% Experience from kills.	30 minutes
Sharpening Skull	+75 Precision on reviving an ally	+75 Power, Toughness, Vitality, Healing Power, Ferocity, and Condition Damage +10% Experience from kills.	30 minutes
Writ of Basic Accuracy	Gain 40 Precision when health above 90%	+10% Experience from kills.	30 minutes
Writ of Accuracy	Gain 60 Precision when health above 90%	+10% Experience from kills.	30 minutes
Writ of Studied Accuracy	Gain 100 Precision when health above 90%	+10% Experience from kills.	30 minutes
Writ of Calculated Accuracy	Gain 120 Precision when health above 90%	+10% Experience from kills.	30 minutes
Writ of Learned Accuracy	Gain 160 Precision when health above 90%	+10% Experience from kills.	30 minutes
Writ of Masterful Accuracy	Gain 200 Precision when health above 90%	+10% Experience from kills.	30 minutes

Related World versus World effects[edit]

Guild Claiming[edit]

Objective Aura 5: Precision (effect) — Precision +100
Presence of the Keep (effect) — Precision +100

Borderlands Bloodlust[edit]

Minor Borderlands Bloodlust Minor Borderlands Bloodlust — Precision +30
Major Borderlands Bloodlust Major Borderlands Bloodlust — Precision +50
Superior Borderlands Bloodlust Superior Borderlands Bloodlust — Precision +60

Notes[edit]

There is no benefit to increasing Critical Chance above 100%.
There are many bonuses that apply directly to Critical Chance as well and are listed there.

Trivia[edit]

During the beta phase this attribute was called Perception.

Attributes

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