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Attack speed

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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

Bonus AS% stacks additively.

Example: Stinger grants +40% attack speed and Nashor's Tooth 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:
    •  Twisted Fate's attack delay is −0.04.
    • \({0.625 \over (1 - 0.04)} = {0.625 \over 0.96} = 0.651041\overline6\). This is  Twisted Fate's 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  Twisted Fate levels up, he gains 3.22\% as bonus AS%.
      • At level 18 he has gained \(3.22\% \times 17 = 54.74\%\) as bonus AS%.
    • At 18 he has maxed  Stacked Deck increasing his attack speed by 30%.
    • Let's say he has the Fury mastery up to 5%.
    • Let's also say he has Phantom Dancer: +50%.
    • All together he has: \(54.74\% + 30\% + 5\% + 50\% = 139.74\%\) bonus AS% or 1.3974 bonus AS as a decimal.
  • 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

Items

  • Berserker's Greaves: +25% attack speed. Unique Passive - Enhanced Movement: +45 movement speed. 1000 gold.
  • Blade of the Ruined King: +40% attack speed. +25 attack damage, +10% life steal. Unique Passive - Your attacks deal 8% of the target's current health in physical damage (60 max vs minions and monsters). Unique Active - Drains target champion, dealing 10% of the champion's maximum Health in physical damage (min. 100) and healing you by the same amount. Additionally you steal 25% of their movement speed for 3 seconds. 90 second cooldown and 450 range. 3200 gold.
  • Dagger: +15% attack speed. 450 gold.
  • Guinsoo's Rageblade: Passive: On cast or hit, you gain +4 ability power and +4% attack speed. This buff lasts for 8 seconds and stacks up to 8 times. Unique Passive: Falling below 50% health grants you 20% attack speed, 10% life steal, and 10% spell vamp until you exit combat. 30 second cooldown. +45 ability power, +35 attack damage. 2600 gold.
  • Nashor's Tooth: +50% attack speed, +60 ability power. Unique Passive: +20% cooldown reduction. Basic attacks deal 15 (+15% AP) bonus magic damage on hit. 2920 gold.
  • Phantom Dancer: +50% attack speed, +30% critical chance, +5% movement speed. Unique Passive: Your champion ignores unit collision. 2800 gold.
  • Recurve Bow: +30% attack speed. 900 gold.
  • Runaan's Hurricane: +70% attack speed. Unique Passive: Your basic attack fire minor bolts at 2 nearby targets, each dealing 10 (+50% AD). These apply on-hit effects. 2400 gold.
  • Statikk Shiv: +40% attack speed, +20% critical chance, +6% movement speed. Unique Passive: Moving and attacking build Static Charges. At 100 Charges, your next attack expends the Charges to deal 100 magic damage to up to 4 targets. This damage can critically strike. 2500 gold.
  • Stinger: +40% attack speed. Unique Passive: +10% cooldown reduction. 1250 gold.
  • Sword of the Divine: +45% attack speed. Active: You gain 100% attack speed and 100% critical strike for 3 seconds or 3 critical strikes - 60 second cooldown. Passive: This item does not grant any attack speed while on cooldown. Champion kills reduce the current cooldown by half. 2150 gold.
  • Trinity Force: +30% attack speed, +30 ability power, +30 attack damage, +10% critical strike chance, +250 health, +200 mana, +8% movement speed. 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. Unique Passive - Spellblade: After using an ability, your next basic attack deals bonus physical damage equal to 200% of your base attack damage. 2 second cooldown. 3703 gold.
  • Wit's End: +50% attack speed, +25 magic resistance. Unique Passive: On hit, you deal 42 magic damage and steal 5 magic resistance. This buff lasts for 5 seconds and stacks up to 5 times. 2450 gold.
  • Youmuu's Ghostblade: Unique Active: Gain 40% attack speed and 20% movement speed for 6 seconds. +30 attack damage, +15% critical chance, +20 armor penetration, +10% cooldown reduction. 2700 gold.
  • Zeal: +20% attack speed, +10% critical strike chance, +5% movement speed. 1100 gold.
  • Zephyr: +50% attack speed, +25 attack damage, +10% movement speed, +10% cooldown reduction. Unique Passive - Tenacity: The duration of stuns, slows, taunts, fears, silences, blinds, and immobilizes are reduced by 35%. 2850 gold.

Variable Availability

  • TC Dervish Blade: +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. 3000 gold.
  • S Feral Flare: +35% attack speed, +15 attack damage. Unique Passive - Maim: Champion kills, assists and large monsters slain will grant Feral stacks. Basic attacks deal 100 (+3 per Feral stack) bonus magic damage and restore 10 (+1 per Feral stack) health. Enemy champions take 33% of the bonus magic damage. UNIQUE: Gain 30% increased gold from monsters. Unique Passive - Gold Income: You may only be in possession of 1 Gold Income item. Unique Active: Places a Stealth Ward at target location that lasts for 180 seconds. 180 seconds cooldown (600 cast range). 1650 gold.
  • T Ichor of Rage: On use, grants +20-42% attack speed, based on champion level, and 15% increased damage to Turrets for 4 minutes. 500 gold.
  • S Madred's Razors: +15% attack speed. Unique Passive - Maim: Basic attacks against monsters deal 60 bonus magic damage and restore 8 health. 750 gold.
  • C Prospector's Blade: +15% attack speed, + 16 attack damage. Unique Passive - Prospector: +150 health. 950 gold.
  • S Wriggle's Lantern: +30% attack speed, 12 attack damage. Unique Passive - Maim: Basic attacks against monsters deal 100 bonus magic damage and restore 10 health. UNIQUE: Gain 30% increased gold from monsters. Unique Passive - Gold Income: You may only be in possession of 1 Gold Income item. Unique Active: Places a Stealth Ward at target location that lasts for 180 seconds. 180 seconds cooldown (600 cast range). 1650 gold.

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.

  •  Aatrox's  Blood Well passively increases his attack speed by 0.6 / 0.7 / 0.8 / 0.9 / 1 / 1.1% for every 2% in the Blood Well.
  •  Aatrox's  Massacre increases his attack speed by 40 / 50 / 60% for 12 seconds.
  •  Blitzcrank's  Overdrive increases his attack speed by 30 / 38 / 46 / 54 / 62% for 8 seconds.
  •  Diana's  Moonsilver Blade passively grants Diana 20% bonus attack speed.
  •  Draven's  Blood Rush increases his attack speed by 20 / 25 / 30 / 35 / 40% for 3 seconds.
  •  Elise's  Skittering Frenzy increases the attack speed of herself and her Spiderlings by 60 / 80 / 100 / 120 / 140% for 3 seconds
  •  Evelynn's  Ravage increases her attack speed by 60 / 75 / 90 / 105 / 120% for 3 seconds after attacking with  Ravage.
  •  Ezreal's  Rising Spell Force 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.
  •  Ezreal's  Essence Flux increases the attack speed of allied champions it passes through by 20 / 25 / 30 / 35 / 40% for 5 seconds.
  •  Fiora's  Burst of Speed increases her attack speed by 60 / 75 / 90 / 105 / 120% for 3 seconds.
  •  Graves's  Quickdraw increases his attack speed by 30 / 40 / 50 / 60 / 70% for 4 seconds.
  •  Jarvan IV's  Demacian Standard 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.
  •  Jax's  Relentless Assault causes his basic attacks to increase his attack speed by 4 / 6 / 8 / 10 / 12 / 14%. This bonus lasts for 2.5 seconds and stacks up to six times.
  •  Jayce's  Hyper Charge increases his attack speed by 300% for three basic attacks.
  •  Jinx's  Pow-Pow 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%).
  •  Kog'Maw's  Caustic Spittle passively increases his attack speed by 10 / 15 / 20 / 25 / 30%.
  •  Lee Sin's  Flurry increases the attack speed by 40% of his next two 2 autoattacks within the next three seconds after casting an ability.
  •  Master Yi's  Highlander increases his attack speed by 30 / 55 / 80% for 10 seconds. Kills and assists extends the duration by 4 second.
  •  Miss Fortune's  Impure Shots increases her attack speed by 20 / 30 / 40 / 50 / 60% for 6 seconds.
  •  Nidalee's  Primal Surge increases her or an allied unit's attack speed by 20 / 30 / 40 / 50 / 60% for 7 seconds.
  •  Nocturne's  Shroud of Darkness 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.
  •  Nunu's  Blood Boil increases an allied unit's and his own attack speed by 25 / 30 / 35 / 40 / 45% for 12 seconds.
  •  Olaf's  Berserker Rage passively increases his attack speed by 1% per 1% health he is missing.
  • Quinn's Heightened Senses increases Quinn's attack speed by 20 / 25 / 30 / 35 / 40% for 3 seconds if she attacks a target that's marked by Vulnerability.
  •  Rengar's  Savagery increases his attack speed by 30 / 35 / 40 / 45 / 50% for 4 seconds, while his  Empowered Savagery 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%.
  •  Sion's  Cannibalism increases his attack speed by 50% for 20 seconds.
  •  Sivir's  On The Hunt passively grants her 40 / 60 / 80% attack speed while  Sivir's  Ricochet is active.
  •  Skarner's  Crystal Slash 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.
  •  Teemo's  Camouflage increases his attack speed by 40% for 3 seconds after leaving his stealth state.
  •  Tristana's  Rapid Fire increases her attack speed by 30 / 45 / 60 / 75 / 90% for 7 seconds.
  •  Trundle's  Frozen Domain coats the target location with ice for 8 seconds, while on this area, Trundle increases his attack speed by 20 / 35 / 50 / 65 / 80%.
  •  Twisted Fate's  Stacked Deck passively increases his attack speed by 10 / 15 / 20 / 25 / 30%.
  •  Twitch's  Ambush increases his attack speed by 30 / 40 / 50 / 60 / 70% for up to 5 seconds after revealing himself.
  •  Udyr's  Monkey's Agility increases his attack speed by 10% upon switching stances. This bonus lasts for 5 seconds and stacks up to 3 times.
  •  Udyr's  Tiger Stance increases his attack speed by 30 / 40 / 50 / 60 / 70% for 5 seconds on activation.
  •  Varus's  Living Vengeance increases attack speed by 20% for 3 seconds on minion kills, while a champion kill/assist will grant 40% for 6 seconds.
  •  Vi's  Denting Blows will increase Vi's attack speed by 30 / 35 / 40 / 45 / 50% for 4 seconds after attacking the same target 3 times.
  •  Volibear's  Frenzy 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.
  •  Warwick's  Hunters Call increases his attack speed by 40 / 50 / 60 / 70 / 80% and half of that amount to nearby allied champions for 10 seconds.
  •  Wukong's  Nimbus Strike increases his attack speed by 30 / 35 / 40 / 45 / 50% after hitting a target with this skill.
  •  Xin Zhao's  Battle Cry 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

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

GMarks (2)

0.94%

30 IP

1.32%

165 IP

1.7%

410 IP

Seal

Seals (3)

0.42%

30 IP

0.59%

165 IP

0.76%

410 IP

Glyph

Glyphs (3)

0.35%

30 IP

0.5%

165 IP

0.64%

410 IP

Quintessence

Quintessences (3)

2.52%

80 IP

3.51%

410 IP

4.5%

1025 IP

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

  • Frozen Heart: Unique Aura: Reduces the attack speed of nearby enemies by 15%.
  • Randuin's Omen: Unique Passive - Cold Steel: If you are hit by a basic attack, you slow the attacker's attack speed by 10%.
  • Warden's Mail: 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

  • Exhaust: 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.

  •  Anivia's  Glacial Storm slows affected units' attack speed by 20% for 1 second.
  •  Darius's  Crippling Strike slows affected unit's attack speed by 20 / 25 / 30 / 35 / 40% for 2 seconds.
  •  Lee Sin's  Cripple slows affected units' attack speed by 30 / 37.5 / 45 / 52.5 / 60% for 4 seconds.
  •  Malphite's  Ground Slam slows affected units' attack speed by 30 / 35 / 40 / 45 / 50% for 3 seconds.
  •  Nasus's  Wither 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.
  •  Nunu's  Absolute Zero slows the attack speed of all nearby enemy units by 25% while channeling for 3 seconds.
  •  Nunu's  Ice Blast 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  Nunu's  Ice Blast, 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

References

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