Haste

 Ability Haste (AH) is the statistic that represents cooldown reduction, particularly cooldown of champion abilities. It is distinct from other versions of haste such as summoner spell haste and item haste, which are not visibly tracked in game. This article will discuss all forms of haste for the topic of cooldown reduction.

Ability Haste can be granted by items, buffs, and runes; it also stacks additively.

The reduced cooldown is determined at the moment an ability is activated. Increasing or decreasing ability haste while the skill is on cooldown will not affect the cooldown.

The amount of Ability Haste a champion can have is capped at 500 AH, equal to reducing one's cooldowns by 83.3%. This value is well beyond what is normally possible to acquire in a game.

Types and Application

The type of haste affects various cooldowns:

• Ability haste: Champion ability cooldowns (e.g. Lucian's Piercing Light).
• Item haste: Item cooldowns (e.g. Locket of the Iron Solari or Guardian Angel).
• Summoner spell haste: Summoner spell cooldowns (e.g. Flash).

Ability haste does not apply to the following:

• Static cooldowns (e.g. Anivia's Rebirth).
• On-target Cooldowns (e.g. Jarvan IV's Martial Cadence), though there are exceptions.
• Interrupted Durations (e.g. Garen's Perseverance).
• Rune cooldowns.

Formula

The formula for an ability cooldown is:

$\pagecolor{Black}\color{White}{\rm Reduced\ cooldown}={\rm Base\ Cooldown}\times{100 \over 100+{\it Ability\ Haste}}$

Conceptually, every 1 AH equals 1% more ability casts, or 1% faster cooldown. The formula translates the stat into a multiplier for the base cooldown, such that 100% increase (or 1 extra cast) at 100 AH renders a x0.5 multiplier, or 50% of the cooldown.

Alternatively, cooldown reduction can be calculated with the formula:

• Cooldown reduction = Ability haste ÷ (Ability haste + 100)

Gold Value ​​​

• Ability haste has a gold value of 50 per point.

Scaling with ability haste

• Ironspike Whip
• Goredrinker ( Ceaseless Hunger)
• Stridebreaker ( Dreamshatter)

Increasing ability haste

Items

This table is automatically generated based on the data from Module:ItemData/data.

Item	Cost	Amount	Availability
Abyssal Mask Abyssal Mask	2400	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Anathema's Chains Anathema's Chains	2500	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Archangel's Staff Archangel's Staff	2900	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Ataraxia Ataraxia	3000	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Axiom Arc Axiom Arc	3000	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Bandleglass Mirror Bandleglass Mirror	1000	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Black Cleaver Black Cleaver	3000	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Caulfield's Warhammer Caulfield's Warhammer	1100	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Chempunk Chainsword Chempunk Chainsword	2800	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Cosmic Drive Cosmic Drive	3000	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Cry of the Shrieking City Cry of the Shrieking City	2200	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Cryptbloom Cryptbloom	2850	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Dawncore Dawncore	2700	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Daybreak Daybreak	2700	30	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Death's Dance Death's Dance	3200	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Echoes of Helia Echoes of Helia	2200	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Eclipse Eclipse	2800	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Enmity of the Masses Enmity of the Masses	2700	35	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Essence Reaver Essence Reaver	2900	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Fiendish Codex Fiendish Codex	900	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Fimbulwinter Fimbulwinter	2400	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Force of Arms Force of Arms	2900	35	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Frozen Fist Frozen Fist	2600	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Frozen Heart Frozen Heart	2500	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Glacial Buckler Glacial Buckler	950	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Glowing Mote Glowing Mote	250	5	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Guardian's Blade Guardian's Blade	950	15	Arena, All Random All Mid
Heavensfall Heavensfall	3100	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Hextech Rocketbelt Hextech Rocketbelt	2600	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Hope Adrift Hope Adrift	2800	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Horizon Focus Horizon Focus	2700	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Hubris Hubris	3000	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Icathia's Curse Icathia's Curse	3100	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Iceborn Gauntlet Iceborn Gauntlet	2600	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Imperial Mandate Imperial Mandate	2300	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Infinity Force Infinity Force	3333	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Ionian Boots of Lucidity Ionian Boots of Lucidity	900	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Kindlegem Kindlegem	800	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Knight's Vow Knight's Vow	2200	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Lich Bane Lich Bane	3100	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Locket of the Iron Solari Locket of the Iron Solari	2200	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Lost Chapter Lost Chapter	1200	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Luden's Companion Luden's Companion	2900	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Malignance Malignance	2700	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Manamune Manamune	2900	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Mikael's Blessing Mikael's Blessing	2300	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Moonstone Renewer Moonstone Renewer	2200	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Morellonomicon Morellonomicon	2200	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Muramana Muramana	2900	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Nashor's Tooth Nashor's Tooth	3000	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Navori Quickblades Navori Quickblades	3300	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Obsidian Cleaver Obsidian Cleaver	3000	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Profane Hydra Profane Hydra	3300	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Ravenous Hydra Ravenous Hydra	3300	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Redemption Redemption	2300	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Reliquary of the Golden Dawn Reliquary of the Golden Dawn	2200	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Riftmaker Riftmaker	3100	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Seraph's Embrace Seraph's Embrace	2900	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Serylda's Grudge Serylda's Grudge	3200	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Sheen Sheen	900	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Shojin's Resolve Shojin's Resolve	3100	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Shurelya's Battlesong Shurelya's Battlesong	2200	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Shurelya's Requiem Shurelya's Requiem	2200	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Spear of Shojin Spear of Shojin	3100	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Spirit Visage Spirit Visage	2900	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Staff of Flowing Water Staff of Flowing Water	2300	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Starcaster Starcaster	2200	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Sundered Sky Sundered Sky	3100	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Swordnado Swordnado	2900	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Syzygy Syzygy	2800	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
The Baron's Gift The Baron's Gift	3000	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
The Brutalizer The Brutalizer	1337	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Trinity Force Trinity Force	3333	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Umbral Glaive Umbral Glaive	2600	15	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Unending Despair Unending Despair	2800	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Upgraded Aeropack Upgraded Aeropack	2600	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Vigilant Wardstone Vigilant Wardstone	2300	20	Classic Summoner's Rift 5v5
Voltaic Cyclosword Voltaic Cyclosword	2900	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Watchful Wardstone Watchful Wardstone	1100	10	Classic Summoner's Rift 5v5
Winter's Approach Winter's Approach	2400	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Zeke's Convergence Zeke's Convergence	2200	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid

Item passives

• Cosmic Drive
• Duskblade of Draktharr ( Draktharr's Shadowcarver)
• Goredrinker ( Ceaseless Hunger)
• Liandry's Anguish ( Liandry's Lament)
• Night Harvester ( Vespertide)
• Shurelya's Battlesong ( Shurelya's Requiem)
• Staff of Flowing Water
• Trinity Force ( Infinity Force)
• Turbo Chemtank ( Turbocharged Hexperiment)

Runes

• Transcendence
• Ability haste rune shard

Neutral Buffs

• Crest of Insight

Champion Abilities

Some champions have abilities that decrease their cooldowns by a flat amount, or by a percentage, affecting either their base cooldown or current cooldown, or some abilities can completely refresh their cooldown. Base reduction occurs before ability haste takes effect while flat reduction occurs after ability haste takes effect.

• Depending on built-in reduction type:
  • Base (applies before AH)
  • Flat (applies after AH)
  • Percent (applies to base / current / total cooldown)
  • Refresh (cooldown is immediately reduced to 0)

Base Reduction

• Annie's Disintegrate
• Darius' Crippling Strike
• Hecarim's Rampage
• Illaoi's Leap of Faith
• Irelia's Bladesurge
• Kindred's Dance of Arrows *
• Nasus' Fury of the Sands
• Neeko's Inherent Glamour
• Nidalee's Aspect of the Cougar
• Pantheon's Grand Starfall
• Poppy's Keeper's Verdict
• Quinn's Harrier
• Shadow Assassin's Shadow Step
• Sona's Crescendo
• Tahm Kench's Abyssal Voyage
• Varus' Blighted Quiver
• Vayne's Tumble
• Veigar's Dark Matter
• Vi's Vault Breaker
• Zed's Death Mark
• Zilean's Time in a Bottle

Flat Reduction

• Aatrox's Deathbringer Stance
• Amumu's Tantrum
• Ezreal's Mystic Shot
• Fizz's Seastone Trident
• Garen's Judgment
• Gragas' Body Slam
• Graves' Quickdraw
• Karma's Gathering Fire
• Katarina's Voracity
• Lucian's Relentless Pursuit
• Maokai's Sap Magic
• Master Yi's Alpha Strike
• Miss Fortune's Strut
• Nocturne's Umbra Blades
• Olaf's Undertow and Reckless Swing
• Senna's Piercing Darkness
• Shen's Ki Barrier
• Shyvana's Twin Bite
• Skarner's Crystal Slash and Fracture
• Syndra's Force of Will *
• Taric's Bravado
• Thresh's Death Sentence
• Tryndamere's Spinning Slash
• Varus' Piercing Arrow
• Vi's Blast Shield
• Xin Zhao's Three Talon Strike
• Zac's Unstable Matter
• Zed's Shadow Slash
• Ziggs' Short Fuse
• Zilean's Rewind

Percentage Reduction

• Fiddlesticks' Bountiful Harvest
• Fiora's Lunge
• Gnar's Boomerang Throw and Boulder Toss
• Janna's Eye of the Storm
• Kai'Sa's Void Seeker
• Kha'Zix's Evolved Reaper Claws
• Lee Sin's Safeguard
• Master Yi's Highlander
• Morgana's Tormented Shadow
• Nasus' Fury of the Sands
• Nautilus' Dredge Line
• Nidalee's Pounce
• Pantheon's Comet Spear
• Rakan's Fey Feathers
• Talon's Noxian Diplomacy
• Warwick's Blood Hunt
• Xerath's Rite of the Arcane
• Yasuo's Steel Tempest
• Zac's Elastic Slingshot

Cooldown Refresh

• Azir's Shifting Sands
• Corki's Special Delivery
• Diana's Lunar Rush
• Darius' Noxian Guillotine (rank 3)
• Draven's Blood Rush
• Evelynn's Whiplash
• Gangplank's Trial by Fire
• Irelia's Bladesurge
• Kalista's Rend
• Kha'Zix's Evolved Wings
• Kled's Skaarl the Cowardly Lizard
• Nidalee's Aspect of the Cougar *
• Qiyana's Royal Privilege and Edge of Ixtal
• Ryze's Overload
• Samira's Wild Rush
• Shadow Assassin's Umbral Trespass
• Swain's Demonic Ascension
• Tahm Kench's Devour
• Tristana's Rocket Jump
• Twitch's Ambush

Increasing ultimate haste

Ultimate haste stacks additively and is applied before ability haste.

• Ultimate Hunter
• Cloudbringer's Grace

Template:Ultimate CDR table

Increasing item haste

Item haste stacks additively. It applies to all items with cooldowns, including passives and actives. Item haste stacks additively with ability haste for the cooldowns of items that also scale with ability haste, such as Goredrinker and Stridebreaker.

• Cosmic Insight
• Ingenious Hunter

• Item haste
• Equivalent CDR
• Item Cooldowns

Item Haste
	None	0	1	2	3	4	5
None	0	20	26	32	38	44	50
	10	30	36	42	48	54	60

Item Haste (Equivalent in CDR)
	None	0	1	2	3	4	5
None	0%	16.67%	20.63%	24.24%	27.54%	30.56%	33.33%
	9.09%	23.08%	26.47%	29.58%	32.43%	35.06%	37.5%

Item Cooldown
Items	Base Cooldown		0	1	2	3	4	5	5
	1.5	1.36	1.25	1.19	1.14	1.09	1.04	1	0.94
	3	2.73	2.5	2.38	2.27	2.17	2.08	2	1.88
	6	5.45	5	4.76	4.55	4.35	4.17	4	3.75
	7	6.36	5.83	5.56	5.3	5.07	4.86	4.67	4.38
	8	7.27	6.67	6.35	6.06	5.8	5.56	5.33	5
	9	8.18	7.5	7.14	6.82	6.52	6.25	6	5.63
	10	9.09	8.33	7.94	7.58	7.25	6.94	6.67	6.25
	15	13.64	12.5	11.9	11.36	10.87	10.42	10	9.38
	18	16.36	15	14.29	13.64	13.04	12.5	12	11.25
	30	27.27	25	23.81	22.73	21.74	20.83	20	18.75
	40	36.36	33.33	31.75	30.3	28.99	27.78	26.67	25
	45	40.91	37.5	35.71	34.09	32.61	31.25	30	28.13
	50	45.45	41.67	39.68	37.88	36.23	34.72	33.33	31.25
	60	54.55	50	47.62	45.45	43.48	41.67	40	37.5
	75	68.18	62.5	59.52	56.82	54.35	52.08	50	46.88
	90	81.82	75	71.43	68.18	65.22	62.5	60	56.25
	120	109.09	100	95.24	90.91	86.96	83.33	80	75
	300	272.73	250	238.1	227.27	217.39	208.33	200	187.5

Increasing summoner spell haste

• Cosmic Insight
• Ionian Boots of Lucidity
• Howling Abyss aura

Summoner spell haste

Summoner's Rift
Base cooldown ▶	360s ()	300s ()	240s ()	210s ()	180s ()	90s ()	20s ()
▼  Haste
12 ()	321.43s	267.86s	214.29s	187.5s	160.71s	80.36s	17.86s
18 (/)	305.08s	254.24s	203.39s	177.97s	152.54s	76.27s	16.95s
30 (/ )	276.92s	230.77s	184.62s	161.54s	138.46s	69.23s	15.38s
36 ( )	264.71s	220.59s	176.47s	154.41s	132.35s	66.18s	14.71s
48 ( )	243.24s	202.7s	162.16s	141.89s	121.62s	60.81s	13.51s
Howling Abyss
Base cooldown ▶		300s ()	240s ()	210s ()	180s ()	80s ()	20s ()
▼  Haste
70 ()		176.47s	141.18s	123.53s	105.88s	47.06s	11.76s
82 ()		164.84s	131.87s	115.38s	98.9s	43.96s	10.99s
88 (/)		159.57s	127.66s	111.7s	95.74s	42.55s	10.64s
100 (/)		150s	120s	105s	90s	40s	10s
106 ()		145.63s	116.5s	101.94s	87.38s	38.83s	9.71s
118 ()		137.61s	110.09s	96.33s	82.57s	36.7s	9.17s

Runes

• Arcane Comet is the only rune that can have its remaining cooldown be reduced. It is reduced by a percentage upon hitting an enemy champion with ability damage.

Trivia

• Ability haste replaced cooldown reduction as a stat on patch V10.23. The change to an upcapped stat allows more flexibility on creating more items with cooldown reduction power.

---

Last updated: April 13, 2020, patch V11.8

• The highest attainable ability haste is 253 AH.

• Ally:
  • Ornn
• Items:
  • Liandry's Lament
  • Vigilant Wardstone
  • Cosmic Drive (with 160 ability power because of Liandry's Lament)
  • Navori Quickblades
  • Black Cleaver
  • A 20 ability haste legendary item
• Runes:
  • Transcendence
  • Ability haste rune shard
• Buffs:
  • Crest of Insight
  • Staff of Flowing Water

• Relevant mathematics:
  • Items = 25 + 25 + 40 + 20 + 20 + 30 + 25 + 20 = 205 ability haste
  • Runes = 10 + 8 = 18 ability haste
  • Buff = 10 + 20 = 30 ability haste
    • Total ability haste = 205 + 18 + 30 = 253

Champion statistics