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.

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 items, abilities, and the Dragon.

Contents 1 Calculations 1.1 Base attack speed 1.2 Bonus attack speed sources 2 Increasing attack speed 2.1 Items 2.1.1 Core 2.1.2 Dominion & Twisted Treeline 2.2 Champion abilities 2.3 Masteries 2.4 Runes 3 Reducing attack speed 3.1 Items 3.2 Champion abilities 3.3 Neutral monsters 4 Notes 5 List of champions' attack speed

Calculations Edit

Base attack speed Edit

Every champion's "base attack speed" (AS_base) is calculated using a hidden variable called "attack delay." Attack delay is a number between −0.10 and 0.08:

AS_base = 0.625 / (1 + attack delay)

This value is the total number shown at level 1 without runes, masteries, etc. It is represented this way throughout the wiki.

Bonus attack speed sources Edit

• 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
• Alacrity runes

Bonus AS% stacks additively.

Example: Stinger grants +40% attack speed and Malady grants +45% attack speed, so the champion gains +85% 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.

Calculation example

• Calculating "base attack speed":
  • Twisted Fate's attack delay = −0.04.
  • 0.625 / (1 − 0.04) = 0.625 / 0.96 = 0.6510416. 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% × 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 4%.
  • Let's also say he has Phantom Dancer: +50%.
  • All together he has: 54.74% + 30% + 4% + 50% = 138.74% as bonus AS% or 1.3874 bonus AS as a decimal.
• Final calculation:
  • (0.625 / 0.96) × (1 + 1.3874).
  • 0.6510416 × 2.3874 = 1.554296716.
  • In game, the number will be shown as: 1.554.

Increasing attack speed Edit

Items Edit

Core Edit

• Berserker's Greaves: +20% attack speed. Unique Passive - Enhanced Movement: +45 movement speed. 900 gold.
• Blade of the Ruined King: +40% attack speed. +25 attack damage, +15% lifesteal. Unique Passive - Your attacks deal 5% of the target's current health in physical damage (60 max vs minions and monsters). Unique Active - Drains target champion, dealing 15% of the champion's maximum Health in physical damage and healing you by the same amount. Additionally you steal 30% of their movement speed for 4 seconds. 60 second cooldown and 500 range. 3200 gold.
• Dagger: +12% attack speed. 400 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.
• Malady: +45% attack speed, +25 ability power. Unique passive: On hit, the target is dealt 15+10% AP magic damage and its magic resistance is reduced by 4. This debuff lasts for 8 seconds and stacks up to 7 times. 2035 gold.
• Nashor's Tooth: +50% attack speed, +65 ability power. Unique passive: +20% cooldown reduction. 2500 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. 950 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. 2450 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 50%. 2200 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 - Icy: On hit, 25% chance for target to be slowed by 30% (20% for ranged attack) for 2 seconds. Unique Passive - Spellblade: After using an ability, your next basic attack deals bonus physical damage equal to 150% of your base attack damage. 2 second cooldown. 3843 gold.
• Wit's End: +40% attack speed, +25 magic resistance. Unique Passive: On hit, the target is dealt 42 magic damage and you gain +5 magic resistance. This buff lasts for 5 seconds and stacks up to 4 times. 2200 gold.
• Youmuu's Ghostblade: Unique Active: Gain 40% attack speed and 20% movement speed for 6 seconds (4 seconds for if ranged). +30 attack damage, +15% critical chance, +20 armor penetration, +10% cooldown reduction. 2700 gold.
• Zeal: +18% attack speed, +10% critical strike chance, +5% movement speed. 1175 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.

Dominion & Twisted Treeline Edit

• 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.
• Kitae's Bloodrazor: +40% attack speed, +30 attack damage. Unique passive: On hit, the target is dealt magic damage equal to 2.5% of the its maximum health. 2725 gold.

Champion abilities Edit

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.

• 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 to 2.5 (the maximum) for three basic attacks.
• Kassadin's  Void Stone reduces magic damage taken by 15% and transforms this damage into bonus attack speed. This effect stacks individually and each individual buff lasts up to 4 seconds.
• 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 40 / 60 / 80% for 8 / 10 / 12 seconds.
• Miss Fortune's  Impure Shots increases her attack speed by 30 / 35 / 40 / 45 / 50% 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.
• 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 grants her an aura for 10 seconds that increases her attack speed by 30 / 45 / 60% and one half of that to nearby allies.
• Skarner's  Crystalline Exoskeleton grants him a shield for up to 6 seconds, while the shield persists Skarner increases his attack speed by 30 / 35 / 40 / 45 / 50%.
• 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  Contaminate infects the target location 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 Edit

• Fury increases your champion's attack speed by 1 / 2 / 3 / 4%.
• Frenzy grants 10% attack speed to your champion for 2 seconds after landing a critical hit.

Runes Edit

• Attack Speed runes increase attack speed.

Name	Type	Tier 1 (Lesser)	Tier 2 (Normal)	Tier 3 (Greater)
Attack Speed	Mark	0.94% 30	1.32% 165	1.7% 410
	Seal	0.42% 30	0.59% 165	0.76% 410
	Glyph	0.35% 30	0.5% 165	0.64% 410
	Quintessence	1.89% 80	2.64% 410	3.4% 1025

Reducing attack speed Edit

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 Edit

• Frozen Heart: Unique Aura: Reduces the attack speed of nearby enemies by 20%.
• Randuin's Omen: Unique Passive - Cold Steel: If you are hit by a basic attack, you slow the attacker's attack speed by 15% and their movement speed by 10% for 1.5 seconds.
• Warden's Mail: Unique Passive - Cold Steel: If you are hit by a basic attack, you slow the attacker's attack speed by 15% for 1.5 seconds.

Champion abilities Edit

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.
• Gragas's  Barrel Roll slows affected units' attack speed by 20 / 25 / 30 / 35 / 40% for 3 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 35% plus an additional 3 / 6 / 9 / 12 / 15% 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.

Neutral monsters Edit

• The Dragon attacks will slow the attacked champion's attack speed by 20% for 4 seconds.

Notes Edit

• 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.

List of champions' attack speed Edit

Champion statistics
Offensive	Attack damage Attack speed Critical strike Life steal Armor penetration Movement speed
Defensive	Health Health regeneration Armor Magic resistance
Magical	Mana Mana regeneration Ability power Cooldown reduction Magic penetration Spell vamp