# Attack speed

## Redirected from Attack Speed

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Attack speed (often shortened as AS or ASPD) is the frequency of a champion's basic attacks. They are measured and displayed as attacks per second.

• Attack speed cannot be increased beyond 2.5 attacks per second (or 1 attack every two fifths of a second, or 0.4 seconds).
• bypasses this limit (up to 5.00 attack per second).

Attack speed bonuses (from items or abilities, etc.) are in percent. The bonus is a percentage of the champions base attack speed. Therefore, champions with higher base attack speed benefit more from attack speed increases. Like all stats, one's attack speed can be increased via leveling up, items, runes, masteries, buffs, and abilities. Some items and abilities (only those two) decrease enemy attack speed.

## Calculations

### Base attack speed

Every champion's base attack speed (ASbase) is calculated using a hidden variable called attack delay,[1] which ranges from −0.10 to 0.08. (ASbase) is the total number shown at level 1 without runes, masteries, etc. It is represented this way throughout the wiki.

$${\it AS}_{\rm base} = {0.625 \over 1 + {\it attack\ delay}}$$

### Bonus attack speed sources

• Champions gain AS% at each level, not including level 1. This amount ranges from roughly 0% to 4% and depends on the champion. This amount depends on the level through the Statistics growth formula.
• Items
• Champion abilities
• Masteries
• Attack Speed runes

Example: grants +50% attack speed and also grants +50% attack speed, so the champion gains +100% in total.

Notes:

• Final attack speed cannot go above the cap of 2.5 attacks per second.
• Many in-game tooltip percentages (such as runes) have been rounded, so results may be slightly different unless the precise numbers are known.

### Example

• Calculating base attack speed:
• attack delay is −0.04.
• $${0.625 \over (1 - 0.04)} = {0.625 \over 0.96} = 0.651041\overline6$$. This is base attack speed, seen at level 1 (without runes, masteries, etc).
• The number seen in game is rounded to 3 decimal places: 0.651.
• Calculating "bonus attack speed":
• Every time levels up, he gains bonus AS% based on percentage growth ($$3.22\%$$) and his level through the Statistics growth formula.
• At level 18 he has gained $$3.22\% \times({7 \over 400}\times(18^2-1)+{267\over400}\times(18-1))=54.74\%$$ as bonus AS%.
• At 18 he has maxed increasing his attack speed by 30%.
• Let's say he has the mastery up to 4%.
• Let's also say he has : +50%.
• All together he has: $$54.74\% + 30\% + 4\% + 50\% = 138.74\%$$ bonus AS% or 1.3874 bonus AS as a decimal.
• Final calculation:
\begin{align} & {0.625 \over 0.96} + ({{0.625 \over 0.96} \times 138.74\%}) \\ =& 0.651041\overline6 + ({0.651041 \times 138.74\%}) \\ \approx & 1.55429 \end{align}
• In game, the number will be shown as: 1.554.

## Increasing attack speed

### Items

• : Unique Passive: Your heals and shields on another unit grant them 15% attack speed and 30 magic damage on-hit for 6 seconds

. +40 ability power, +100% base mana regeneration, +10% cooldown reduction. Unique Passive: +8% movement speed.
2200
.
• : +30% attack speed

. Unique Passive – Enhanced Movement: +45 movement speed.
1100
.
• : +40% attack speed

, +25 attack damage, +10% life steal. Unique Passive: Basic attacks deal 6% of the target's current health as physical damage (60 max vs. minions). Unique Active: Deals 10% of target champion's maximum health (min. 100) as physical damage, heals for the same amount and steals 25% of the target's movement speed for 3 seconds (90 second cooldown) (550 range).
3400
.
• : +12% attack speed

.
300
.
• : Passive: Basic attacks grant +8% attack speed, +3 attack damage, and +4 ability power for 5 seconds (stacks up to 8 times, melee attacks grant 2 stacks). While you have 8 stacks, you gain Guinsoo's Rage

. +30 attack damage, +40 ability power. Unique Passive – Guinsoo's Rage: Basic attack deal 20 + (15% bonus AD) + (7.5% AP) bonus on-hit magic damage to the target and nearby units in a 385 range area of effect.
2800
.
• : +15% attack speed

. Passive: Moving and attacking will make an attack Energized. Unique Passive – Energized Strike: Your Energized attacks deal 30 bonus magic damage on hit.
750
.
• : Unique Passive – Lifegrip: When Lifeline triggers, gain +25% attack speed, +10% spell vamp, and +10% life steal until out of combat

. +55 attack damage, +50 magic resist, +10 armor penetration. Unique Passive – Lifeline: Upon taking magic damage that would reduce health below 30%, grants a shield that absorbs 300 + (100% bonus MR) magic damage for 5 seconds (90 second cooldown).
3250
.
• : +50% attack speed

, +80 ability power. Unique Passive: +20% cooldown reduction. Unique Passive: Basic attacks deal 15 + (15% AP) bonus magic damage on hit.
3000
.
• : +45% attack speed

, +30% critical strike chance, +5% movement speed. Unique Passive – Spectral Waltz: While within 500 units of an enemy champion you can see, +7% movement speed and you can move through units. Unique Passive – Lament: The last champion hit deals 12% less damage to you (ends after 10 seconds of not hitting).
2800
.
• : +30% attack speed

, +30% critical strike chance, +7% movement speed. Passive: Moving and attacking will make an attack Energized. Unique Passive – Firecannon: Your Energized attacks gain 35% bonus range (+150 range maximum) and deal 50 – 200 bonus magic damage on hit.
2600
.
• : +25% attack speed

. Unique Passive: Basic attacks deal an additional 15 physical damage on hit.
1000
.
• : +40% attack speed

, +30% critical strike chance, +7% movement speed. Unique Passive: When basic attacking, bolts are fire at up to 2 ennemies near the target, each dealing 25% AD physical damage. Bolts can critically strike and apply on hit effects. Unique Passive: Basic attacks deal an additional 15 physical damage on hit.
2600
.
• : +35% attack speed

, +30% critical strike chance, +5% movement speed. Passive – Energize: Moving and using basic attacks Energize you. When fully Energized, gain Shiv Lightning. Unique Passive – Shiv Lightning: Your next basic attack (on-hit) deals 30 – 100 bonus magic damage, increased to 66 – 220 against minions, that can spark to up to 4 additional nearby units.
2600
.
• : +50% attack speed

. Unique Passive: +10% cooldown reduction.
1200
.
• : +15% attack speed

, +250 health, +25 attack damage, +20% critical strike chance, +10% cooldown reduction, +5% movement speed, +250 mana. Unique Passive – Rage: Basic attacks grant 20 movement speed for 2 seconds on hit. Minion, monster, and champion kills grant 60 movement speed for 2 seconds. This movement speed bonus is halved for ranged champions. Unique Passive – Spellblade: After using an ability, the next basic attack deals 200% base AD bonus physical damage (1.5 second cooldown).
3800
.
• : +40% attack speed

, +40 magic resistance. Unique Passive: Your basic attacks deal 40 bonus magic damage. Unique Passive: Your basic attacks steal 5 magic resistance of the target for 5 seconds (stacks up to 5 times).
2800
.
• : Unique Active: Grants +20% movement speed and +40% attack speed for 6 seconds (45 second cooldown)

. +65 attack damage, +10% cooldown reduction. Unique Passive: +20 armor penetration.
3200
.
• : +15% attack speed

, +20% critical strike chance, +5% movement speed.
1300
.

#### Variable Availability

• TC : +50% attack speed

, +45 magic resist, +10% cooldown reduction. Unique Active – Quicksilver: Removes all debuffs from your champion. Melee champions also gain +50% movement speed for 1 second (90 second cooldown).
2700
.
• ST : +40% attack speed

, +30 + (Devourer stacks) on-hit magic damage. Unique Passive – Devouring: Scoring a takedown (kill or assist) on a champion or large monster will grant 1 Devourer stack, 5 Devourer stacks for epic monsters, and 2 Devourer stacks for the Rift Scuttler. While stacking your Devourer, you are accompanied by a Ghost Dog who will grow with stacks. At 30 stacks, the Ghost Dog merges with the wielder and the Devourer transforms into .
1400
.
• C : +15% attack speed

, +16 attack damage. Unique Passive – Prospector: +150 health.
950
.
• ST : +40% attack speed

, + 60 on-hit magic damage. Unique Passive – Phantom Hit: Every other basic attack will trigger a phantom attack that triggers all on hit effect a second time. Ranged champions trigger this every fourth attack.
1400
.

### Champion abilities

Note: Only the attack speed buff effect of these abilities is shown here, to read more information on each of these abilities, follow the link on each of them.

• passively increases his attack speed by 0.6 - 1.1 (based on level)% for every 2% in the Blood Well.
• increases his attack speed by 40 / 50 / 60% for 12 seconds.
• increases his attack speed by 30 / 38 / 46 / 54 / 62% for 5 seconds.
• passively grants Diana 20% bonus attack speed.
• increases his attack speed by 20 / 25 / 30 / 35 / 40% for 3 seconds.
• increases the attack speed of herself and her Spiderlings by 60 / 80 / 100 / 120 / 140% for 3 seconds.
• increases her attack speed by 60 / 75 / 90 / 105 / 120% for 3 seconds after attacking with .
• passively increases his attack speed by 10% whenever he hits a target with any of his abilities. This bonus lasts for 6 seconds and stacks up to 5 times.
• increases the attack speed of allied champions it passes through by 20 / 25 / 30 / 35 / 40% for 5 seconds.
• increases her attack speed by 50% for her 2 next basic attacks.
• increases his attack speed by (5.5 × Gnar's level) % when in .
• increases his attack speed by 20 / 30 / 40 / 50 / 60% for 3 seconds.
• passively increases his attack speed by 10 / 13 / 16 / 19 / 22%. When activated, it throws a flag that increases nearby allied champions and his own attack speed by the same amount.
• causes his basic attacks to increase his attack speed by 4 - 14 (based on level)%. This bonus lasts for 2.5 seconds and stacks up to six times.
• increases his attack speed to 2.5 for three basic attacks.
• causes her basic attacks to grant bonus attack speed for 2.5 seconds, stacking up to three times (up to 30 / 40 / 50 / 60 / 70%).
• passively increases his attack speed by 15 / 20 / 25 / 30 / 35%, and, upon activation and for 6 seconds, double his total attack speed.
• increases the attack speed by 40% of his next two 2 autoattacks within the next three seconds after casting an ability.
• increases his attack speed by 30 / 55 / 80% for 10 seconds. Kills and assists extends the duration by 4 second.
• increases her attack speed by 20 / 30 / 40 / 50 / 60% for 6 seconds.
• increases her or an allied unit's attack speed by 20 / 30 / 40 / 50 / 60% for 7 seconds.
• passively grants himself 20 / 25 / 30 / 35 / 40% attack speed. Upon activation, it summons a spell shield for 1.5 seconds, if the shield successfully blocks a spell, the attack speed bonus is doubled for 5 seconds.
• increases an allied unit's and his own attack speed by 25 / 30 / 35 / 40 / 45% for 12 seconds.
• passively increases his attack speed by 1% per 1% health he is missing.
• increases his attack speed by 40 / 50 / 60 / 70 / 80% for 6 seconds.
• increases Quinn's attack speed by 20 / 25 / 30 / 35 / 40% for 3 seconds when she attacks a target marked by .
• passively grants her 20 / 40 / 60% bonus attack speed.
• increases his attack speed by bonus 47 + (3 × Rengar's level) % for 5 seconds
• passively grants her 40 / 60 / 80% attack speed while is active.
• increases his attack speed by 20 / 40 / 60 / 80% for 3 seconds after leaving his stealth state.
• increases her attack speed by 30 / 50 / 70 / 90 / 110% for 5 seconds.
• coats the target location with ice for 8 seconds, while on this area, Trundle increases his attack speed by 20 / 35 / 50 / 65 / 80%.
• passively increases his attack speed by 10 / 15 / 20 / 25 / 30%.
• increases his attack speed by 30 / 40 / 50 / 60 / 70% for up to 5 seconds after revealing himself.
• increases his attack speed by 10% upon switching stances. This bonus lasts for 5 seconds and stacks up to 3 times.
• increases his attack speed by 30 / 40 / 50 / 60 / 70% for 5 seconds on activation.
• increases attack speed by 20% for 3 seconds on minion kills, while a champion kill/assist will grant 40% for 6 seconds.
• will increase Vi's attack speed by 30 / 35 / 40 / 45 / 50% for 4 seconds after attacking the same target 3 times.
• passively causes his auto attacks to increase his attack speed by 8 / 11 / 14 / 17 / 20%. This bonus stacks up to 3 times and lasts for 4 seconds.
• increases his attack speed by 40 / 50 / 60 / 70 / 80% and half of that amount to nearby allied champions for 6 seconds.
• increases his attack speed by 30 / 35 / 40 / 45 / 50% after hitting a target with this skill.
• increases his attack speed by 40 / 50 / 60 / 70 / 80% for 5 seconds.

### Masteries

• increases your champion's attack speed by 0.8 / 1.6 / 2.4 / 3.2 / 4%.

### Runes

Name Type Tier 1 (Lesser) Tier 2 (Normal) Tier 3 (Greater)
Attack Speed Mark

0.94 %

5

1.32 %

165

1.7 %

410

Seal

X X 0.76 %

410

Glyph

X X 0.64 %

410

Quintessence

2.52 %

15

3.51 %

100

4.5 %

1025

## Reducing attack speed

Note: Attack speed reductions stack multiplicatively and take percentages off the final attack speed value after all bonus attack speed has been factored in.

### Items

• : Unique Aura: Reduces the attack speed of nearby enemies by 15%.
• : Unique Passive – Cold Steel: If you are hit by a basic attack, you slow the attacker's attack speed by 15% for 1 second.
• : Unique Passive – Cold Steel: If you are hit by a basic attack, you slow the attacker's attack speed by 15% for 1 second.

### Summoner Spells

• : Active: Exhausts target enemy champion, reducing their movement speed and attack speed by 30%, their armor and magic resist by 10, and their damage dealt by 40% for 2.5 seconds.

### Champion abilities

Note: Only the attack speed reduction effect of these abilities is shown here, to read more information on each of these abilities, follow the link on each of them.

• slows affected units' attack speed by 20% for 1 second.
• slows affected enemy champion's attack speed by 50% for 1.5 seconds.
• slows affected units' attack speed by 30 / 35 / 40 / 45 / 50% for 3 seconds.
• reduces an enemy unit's attack speed by 17.5% plus an additional 1.5 / 3 / 4.5 / 6 / 7.5% per second for 5 seconds.
• slows the attack speed of all nearby enemy units by 25% while channeling for 3 seconds.
• reduces an enemy unit's attack speed by 25% for 3 seconds.

## Notes

(bonus attack speed only) is the only ability that directly scales with a champion's attack speed statistic. Many other abilities can scale indirectly (for example, through the flat cooldown reduction per attack with ).

## List of champions' attack speed

The highest and lowest base attack speed champions
Champion Level Top 5 champions Bottom 5 champions
Level 1 1. 0.694 AS 1. 0.481 AS
1.
1.
1.
1.
2. 0.69 AS 2. 0.568 AS
2.
3. 0.679 AS 3. 0.571 AS
3.
3.
3.
3.
3.
4. 0.672 AS 4. 0.579 AS
4.
5. 0.67 AS 5. 0.601 AS
5.
5.
5.
Level 18 1. 1.105 AS 1. 0.678 AS
2. 1.089 AS 2. 0.712 AS
3. 1.087 AS 3. 0.717 AS
4. 1.07 AS 4. 0.731 AS
5. 1.06 AS 5. 0.731 AS
5.
5.

## Trivia

[Last updated 27/02/2016 on patch 6.4]

The most attack speed a champion can reach at level 1 with 500  and without any ally is 2.155. This is only possible with .

Relevant mathematics:
Base AS = 0.625
Bonus AS = 9 × 1.7 + 9 × 0.64 + 9 × 0.76 + 3 × 4.5 + 4 + 12 + 15 = 72.4%
Total AS = (0.625 × 1.724) × 2 = 2.155

With the same set-up, but with 4 level 1 allies (, , , and ) the most attack speed a champion can reach at level 1 with 500  is 3.2175. This is only achievable with .

• will cast on (+20% AS for 5 seconds)
• will cast on (+20% AS for 7 seconds)
• will cast on (+25% AS for 12 seconds)
• will cast close to (+20% AS for 6 seconds)
Relevant mathematics:
Base AS = 0.625
Bonus AS = 9 × 1.7 + 9 × 0.64 + 9 × 0.76 + 3 × 4.5 + 4 + 12 + 15 + 20 + 20 + 25 + 20 = 157.4%
Total AS = (0.625 × 2.574) × 2 = 3.2175

With no particular context, requires to have at least 300% bonus AS in order to reach the 5.00 attack speed cap.

Relevant mathematics:
Total AS = (0.625 × X) × 2 = 5.00
X = (5.00 ÷ 2) ÷ 0.625
X = 2.5 ÷ 0.625
X = 4 or 300%