Attack speed (often shortened as AS or ASPD) is the frequency at which a champion performs basic attacks and are displayed as "attacks per second." Attack speed caps at 2.5 attacks per second, or 1 attack every two fifths of a second (0.4 seconds).
Attack speed bonuses works by adding a percentage of a champion's base attack speed to his or her "base attack speed." Champions with a low base attack speed will receive less of an attack speed boost from the bonus than champions with a high base attack speed, but the proportional increase in DPS will remain the same for both. One's attack speed can be increased via leveling up, items, runes, masteries, buffs, and abilities. One's attack speed can only be decreased by certain items and abilities.
Calculations
Base attack speed
Every champion's base attack speed (ASbase) is calculated using a hidden variable called attack speed offset,[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.
$${\it AS}_{\rm base} = {0.625 \over 1 + {\it attack\ speed\ offset}}$$
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.
- Items
- Champion abilities
- The Fury mastery
- The Frenzy mastery
- Template:Rune runes
Bonus AS% stacks additively.
- Example: grants +40% attack speed and grants +50% attack speed, so the champion gains +90% 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
- At level 18 he has gained \(3.22\% \times 17 = 54.74\%\) as bonus AS%.
levels up, he gains 3.22\% as bonus AS%.
- At 18 he has maxed increasing his attack speed by 30%.
- Let's say he has the Fury mastery up to 5%.
- Let's also say he has : +50%.
- All together he has: \(54.74\% + 30\% + 5\% + 50\% = 139.74\%\) bonus AS% or 1.3974 bonus AS as a decimal.
- Every time
- Final calculation:
- \(\begin{align} & {0.625 \over 0.96}\times 239.74\% \\ =& 0.651041\overline6 \times 239.74\% \\ \approx & 1.56081 \end{align}\)
- In game, the number will be shown as: 1.561.
Increasing attack speed
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Items
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Variable Availability
- Item availability needs updating. Template:Ile
- Summoner's Rift Template:Ile
- Twisted Treeline Template:Ile
- Summoner's Rift Template:Ile
- Item availability needs updating. Template:Ile
- Summoner's Rift Template:Ile
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 Error: Parameter '3' is not accepted.% 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 8 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 60 / 75 / 90 / 105 / 120% for 3 seconds.
- increases his attack speed by 30 / 40 / 50 / 60 / 70% for 4 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 again by the same amount.
- causes his basic attacks to increase his attack speed by Error: Parameter '3' is not accepted.%. This bonus lasts for 2.5 seconds and stacks up to six times.
- increases his attack speed by 300% for three basic attacks.
- causes her basic attacks to increase her attack speed by 10 / 18.3 / 26.6 / 35 / 43.3%. This bonus lasts for 2.5 seconds and stacks up to three times(up to 30 / 55 / 80 / 105 / 130%).
- passively increases his attack speed by 10 / 15 / 20 / 25 / 30%.
- 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 Quinn's attack speed by 20 / 25 / 30 / 35 / 40% for 3 seconds if she attacks a target that's marked by .
- increases his attack speed by 30 / 35 / 40 / 45 / 50% for 4 seconds, while his increases his attack speed by 60 / 70 / 80 / 90 / 100% for 4 seconds. These effects can stack for a total of 90 / 105 / 120 / 135 / 150%.
- increases his attack speed by 50% for 20 seconds.
- passively grants her 40 / 60 / 80% attack speed while is active.
- increase his attack speed by 8 / 10 / 12 / 14 / 16% for 5 seconds that stacks up to 3 times when damaging an enemy champion with the ability.
- increases his attack speed by 40% for 3 seconds after leaving his stealth state.
- increases her attack speed by 30 / 45 / 60 / 75 / 90% for 7 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 autoattacks 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 10 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
- Fury increases your champion's attack speed by 1.25 / 2.5 / 3.75 / 5%.
- Frenzy grants 5% attack speed to your champion for 3 seconds after landing a critical hit. This bonus stacks up to 3 times.
Runes
- Template:Rune runes increase attack speed.
Name | Type | Tier 1 (Lesser) | Tier 2 (Normal) | Tier 3 (Greater) |
---|---|---|---|---|
Attack Speed | Mark | 0.94% | 1.32% | 1.7% |
Seal | 0.42% | 0.59% | 0.76% | |
Glyph | 0.35% | 0.5% | 0.64% | |
Quintessence | 2.52% | 3.51% | 4.5% |
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 10%.
- : Unique Passive - Cold Steel: If you are hit by a basic attack, you slow the attacker's attack speed by 10% for 1.5 seconds.
Summoner Spells
- : Active: Exhausts target enemy champion, reducing their attack and movement speed by 30% for 2.5 seconds and reducing their damage dealt by 50% for the duration.
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 unit's attack speed by 20 / 25 / 30 / 35 / 40% for 2 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
- All percentages listed in a champion's attack speed statistic are approximations.
- Attack speed reduction duration is not affected by crowd control reduction. However if attack speed reduction is in one ability with crowd control like , then the crowd control reduction reduces its duration. So attack speed reduction is reduced by the effect only along with other crowd control. This has been changed with Patch 3.13, as Attack Speed Reductions are now counted as Slows.
List of champions' attack speed
- Main article: List of champions' attack speed