Attack speed

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

Each champion starts with a certain attack speed ratio, which is also the value given by default to their base attack speed (attack speed at level 1 without any other bonuses). Some champions can start with a base attack speed different from their attack speed ratio. Additional bonus attack speed can be obtained through level-up or with a variety of items, abilities and runes. Bonus attack speed  stacks additively, and each bonus point acquired directly affects its statistic. Bonus attack speed is a percentage of the attack speed ratio, therefore, champions with higher ratio benefit more from bonus attack speed.

Attack speed is capped at 2.5 attacks per second (or 1 attack every 0.4 seconds). It also cannot be reduced below a floor of 0.2 (or 1 attack every 5 seconds). The values of these restrictions can be altered by certain effects.

Gold Value ​​

• Attack speed has a gold value of 25 per point.

Calculations

Bonus attack speed per level

Champions gain bonus attack speed % every time they level up, which ranges from roughly 0 - 6% (the exact number depending on the specific champion) and can be calculated through the statistics growth formula.

Bonus AS% stacks additively.

Example: Stinger grants +35% attack speed and Nashor's Tooth grants +50% attack speed, so the champion gains +85% in total.

Notes:

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

Example

• Twisted Fate's base attack speed and attack speed ratio are both 0.651.
• Calculating "bonus attack speed":
  • Every time Twisted Fate levels up, he gains bonus AS% based on his percentage growth 3.22% and his level through the statistics growth formula.
    • At level 10 he has gained 3.22% × 9 × (0.7025 + 0.0175 × 9) = 24.9228% as bonus AS%.
  • Let's say he has maxed Stacked Deck increasing his attack speed by 40%.
  • He also has the Legend: Alacrity rune to 3%.
  • And he has Stinger: +35%.
  • All together he has: 24.9228% + 40% + 3% + 35% = 102.9228% bonus AS%.
• Final calculation:

  0.651 × (1 + 102.9228 ÷ 100)
  ≈ 1.321027428

  • In game, the number will be shown as: 1.321.

Exceeding or altering the attack speed cap

The following game elements will exceed or alter the 2.5-attacks-per-second cap:

Removing the cap

Effects that remove the attack speed cap allow characters to fire basic attacks at rates higher than 2.5, given high enough attack speed bonuses. The cap is technically increased to 90.0 for the duration, however limits to the game itself only allow for up to 30 attacks per second, or one per frame.

Champions

• Jinx's Get Excited!

Runes

• Hail of Blades
• Lethal Tempo

Fixed attack speed above the cap

Champions

• Urgot's Purge - This has a fixed attack speed of 3.0. It does not interact with bonuses nor the attack speed stat itself.

Reducing the cap

Champions

• Graves' New Destiny - Special attack cooldown and attack speed calculation - cannot reach 2.5 attack speed.
• Jhin's Whisper - Always fixed to his base attack speed + innate attack speed growth, thus can never reach 2.5 attack speed.
• Sion's Glory in Death - Reduces the cap to 1.75 and increases the floor to 1.75 until the effect ends. Effects that remove the attack speed cap (see above) still allow exceeding the cap.

Attack speed as scaling

The major part of champion abilities that use attack speed will scale with base attack speed. But some abilities scale with the total or bonus attack speed the champion has.

Note that any (bonus) attack speed exceeding the attack speed cap will still improve these ability scalings, as they are not depending on the absolute attack speed stat.

Champions

• Jhin's Whisper
• Jinx's Get Excited! and Zap!
• Kai'Sa's Supercharge
• Taric's Bravado
• Varus' Living Vengeance
• Xin Zhao's Wind Becomes Lightning
• Yasuo's Steel Tempest
• Yone's Mortal Steel and Spirit Cleave

Increasing attack speed

Items

Flat attack speed

Item	Cost	Amount	Availability
Berserker's Greaves Berserker's Greaves	1100	35 %	All maps
Blade of the Ruined King Blade of the Ruined King	3300	25 %	All maps
Bloodrazor Bloodrazor	1625	50 %	Summoner's Rift
Dagger Dagger	300	12 %	All maps
Guinsoo's Rageblade Guinsoo's Rageblade	3100	25 %	All maps
Kircheis Shard Kircheis Shard	700	15 %	All maps
Might of the Ruined King Might of the Ruined King	3300	40 %	All maps
Nashor's Tooth Nashor's Tooth	3000	50 %	All maps
Phantom Dancer Phantom Dancer	2600	30 %	All maps
Rapid Firecannon Rapid Firecannon	2600	30 %	All maps
Recurve Bow Recurve Bow	1000	25 %	All maps
Runaan's Hurricane Runaan's Hurricane	2600	40 %	All maps
Statikk Shiv Statikk Shiv	2600	40 %	All maps
Stinger Stinger	1100	35 %	All maps
Stormrazor Stormrazor	3200	15 %	All maps
Trinity Force Trinity Force	3733	40 %	All maps
Trinity Fusion Trinity Fusion	3733	50 %	All maps
Wit's End Wit's End	2900	50 %	All maps
Zeal Zeal	1400	12 %	All maps

Conditional attack speed

Item	Cost	Total Amount	Availability
Ardent Censer	2300	10% - 30%	All maps
Guinsoo's Rageblade	3100	25% - 73%	All maps
Sanguine Blade	3100	20% - 80%	All maps

Champion abilities

Ally-targeted

User only

Runes

Decreasing attack speed

Attack speed reductions  stack multiplicatively and take percentages off the final attack speed value after all bonus attack speed has been factored in. Attack speed reductions are affected by Tenacity, but not by Slow resist.

Champion abilities

• Fiora's Riposte
• Malphite's Ground Slam
• Mordekaiser's Realm of Death
• Nasus' Wither

Items

• Frozen Heart
• Randuin's Omen
• Thornmail
• Warden's Mail

Champions with altered base attack speed at level 1

List of champions' attack speed

Champions with the lowest or highest attack speed before items, runes, or abilities

Champion Level	Top 5 champions		Bottom 5 champions
Level 1	1. Maokai	0.8 AS	1. Graves	0.475 AS
	2. Shen	0.751 AS	2. Illaoi	0.571 AS
	3. Amumu 3. Malphite 3. Zac	0.736 AS	3. Annie	0.579 AS
	4. Nocturne 4. Dr. Mundo	0.721 AS	4. Singed	0.613 AS
	5. Wukong	0.711 AS	5. Xerath 5. Heimerdinger 5. Kayle 5. Fiddlesticks 5. Poppy 5. Diana 5. Kennen 5. Sett 5. Taliyah 5. Qiyana 5. Kled 5. Mega Gnar 5. Azir 5. Senna 5. Urgot 5. Jinx 5. Xayah 5. Neeko 5. Kindred 5. Syndra 5. Malzahar 5. Karma 5. Jhin 5. Ezreal 5. Volibear 5. Yuumi 5. Yorick 5. Talon 5. Riven 5. Bard 5. Lulu 5. Yone 5. Cho'Gath 5. Soraka 5. Zilean 5. Gnar 5. Ryze 5. Aurelion Sol 5. Morgana 5. Karthus 5. Kled & Skaarl 5. Zoe 5. Taric 5. Veigar 5. Skarner 5. Swain 5. Akali 5. Blitzcrank 5. Nunu & Willump 5. Leona 5. Lillia 5. Ornn 5. Anivia 5. Elise 5. Thresh 5. Janna 5. Mordekaiser 5. LeBlanc 5. Sivir 5. Darius 5. Zyra 5. Brand 5. Alistar 5. Vel'Koz 5. Garen 5. Galio	0.625 AS
Level 18	1. Gnar	1.263 AS	1. Mega Gnar	0.678 AS
	2. Kalista	1.166 AS	2. Graves	0.692 AS
	3. Malphite	1.105 AS	3. Annie	0.713 AS
	4. Teemo	1.086 AS	4. Jinx 4. Yuumi 4. Mordekaiser 4. Darius	0.731 AS
	5. Shen	1.083 AS	5. Blitzcrank	0.745 AS

Notes

• All percentages listed in a champion's attack speed statistic are approximations.
• Many abilities can scale indirectly with attack speed (for example, through the flat cooldown reduction per attack with Master Yi's Alpha Strike).

Trivia

• The old stat icon for attack speed was an edited red recolor of the icon of Stinger.

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Last updated: July 15, 2020 – V10.14

• Without using Prototype: Omnistone, which potentially allows for infinite amounts of attack speed, The most attack speed a champion can have is 10.4375 with a level 18 Taric.
• Base AS: 0.625 AS
• Items:
  • One Guinsoo's Rageblade
  • One Sanguine Blade
  • Four Nashor's Tooth
• Runes:
  • Hail of Blades or Lethal Tempo
  • Legend: Alacrity
  • Attack speed rune shard
• Buffs:
  • Nidalee's Primal Surge
  • Lulu's Whimsy
  • Jarvan IV's Demacian Standard
  • Yuumi's Zoomies
  • Ardent Censer
  • Taric's level 18 attack speed
• AS Amplification:
  • Taric's Bravado
• Relevant mathematics:
  • Taric's total AS:
    • Items = 73% + 80% + 4 × 50% = 353% bonus AS
    • Runes = 110% + 18% + 10% = 138% bonus AS
    • Buffs = 60% + 45% + 30% + 45% + 30% + 34% = 244% bonus AS
  • Taric's total AS = (0.625 × (1 + 3.53 + 1.38 + 2.44)) ×  2 = 10.4375 total AS

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Last updated: July 15, 2020 – V10.14

• The most attack speed a champion can reach at level 1 with the initial 500 is 4.1125 with Jayce.
• Base AS: 0.658 AS
• Item:
  • One Dagger
• Runes:
  • Hail of Blades
  • Legend: Alacrity (no stacks)
  • Attack speed rune shard
• Buffs:
  • Jayce's Hyper Charge
  • Jarvan IV's Demacian Standard
  • Lulu's Whimsy
  • Nidalee's Primal Surge
  • Yuumi's Zoomies
• Relevant mathematics:
  • Jayce's total AS:
    • Items = 12% = 12% bonus AS
    • Runes = 110% + 3% + 10% = 123% bonus AS
    • Buffs = 25% + 20% + 25% + 20% + 300% = 390% bonus AS
  • Jayce's total AS = (0.658 × (1 + 0.12 + 1.23 + 3.90)) = 4.1125 total AS

References