英雄联盟维基
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Armor is a stat that all units have, including minions, monsters, and buildings. Increasing armor reduces the physical damage the unit takes. Each champion begins with some armor which increases with level. You can gain additional armor from abilities, items, masteries, and runes. Armor stacks additively.

At level 18, base armor ranges from 61 (Heimerdinger Heimerdinger) to 90 (Maokai Maokai and Poppy Poppy).

Damage reduction[]

Incoming physical damage is multiplied by a factor based on the unit's armor:

Damage multiplier = 100 / (100 + Armor) if Armor ≥ 0
Damage multiplier = 2 − 100 / (100 − Armor) if Armor ≤ 0

Examples:

  • 25 armor → ×0.8 incoming physical damage (20% reduction).
  • 100 armor → ×0.5 incoming physical damage (50% reduction).
  • −25 armor → ×1.2 incoming physical damage (20% increase).

Stacking armor[]

Every point of armor requires a unit to take 1% more of its maximum health in physical damage to be killed. This is called effective health.

Example: A unit with 60 armor has 60% more of its maximum health in effective health, so if the unit has 1000 maximum health, it will take 1600 physical damage to kill it.

What this means: by definition, armor does not have diminishing returns, because each point increases the unit's effective health against physical damage by 1% of its current actual health whether the unit has 10 armor or 1000 armor.

Note: Unlike health, increasing armor also makes healing more effective because it takes more effort to remove the unit's health than it does to restore it.

Ways to increase armor[]

Items[]

Core[]

  • Aegis of the Legion Aegis of the Legion: +18 armor. Unique Aura: Nearby allied champions gain +12 armor, +8 attack damage, and +15 magic resistance. +270 health, +24 magic resistance. 1925 gold.
  • Atma's Impaler Atma's Impaler: +45 armor, +18% critical strike chance. Unique Passive: You gain attack damage equal to 1.5% of your maximum health. 2355 gold.
  • Chain Vest Chain Vest: +45 armor. 700 gold.
  • Cloth Armor Cloth Armor: +18 armor. 300 gold.
  • Doran's Shield Doran's Shield: +10 armor, +120 health, +8 health regeneration. 475 gold.
  • Emblem of Valor Emblem of Valor: +25 armor. Unique Aura: Nearby allied champions gain +10 health regeneration. 900 gold.
  • Frozen Heart Frozen Heart: +99 armor, +500 mana. Unique Passive: +20% cooldown reduction. Unique Passive: Nearby enemies suffer −20% attack speed. 2775 gold.
  • Glacial Shroud Glacial Shroud: +45 armor, +425 mana. Unique Passive: +15% cooldown reduction. 1525 gold.
  • Guardian Angel Guardian Angel: +68 armor, +38 magic resistance. Unique Passive: Revives your champion upon death, restoring 750 health and 375 mana. 5 minute cooldown. 2600 gold.
  • Locket of the Iron Solari Locket of the Iron Solari: +35 armor, +300 health. Unique Aura: Nearby allied champions gain +15 health regeneration. Unique Active: Shield yourself and nearby allies for 5 seconds, absorbing up to 50 damage, +10 per level. 60 second cooldown. 2225 gold.
  • Madred's Bloodrazor Madred's Bloodrazor: +25 armor, +40 attack damage, +40% attack speed. Unique Passive: On hit, target suffers magic damage equal to 4% of target's maximum health (maximum 120 versus monsters). 3800 gold.
  • Madred's Razors Madred's Razors: +23 armor, +15 attack damage. Unique Passive: On hit, 20% chance for target minion/monster to suffer 300 magic damage. 1000 gold.
  • Ninja Tabi Ninja Tabi: +25 armor Unique Passive: Enhanced Movement 2. Reduces the damage taken from non-turret autoattacks by 10%. 850 gold.
  • Randuin's Omen Randuin's Omen: +75 armor, +350 health, +25 health regeneration. Unique Passive: +5% cooldown reduction. Unique Passive: On being hit, 20% chance for attacker's attack speed and movement to be slowed by 35% for 3 seconds. Unique Active: Surrounding units' attack speed and movement are slowed by 35% for 2 seconds plus 0.5 seconds for each 100 armor and magic resistance you have. 60 second cooldown. 3075 gold.
  • Sunfire Cape Sunfire Cape: +45 armor, +450 health. Unique Passive: Nearby enemies suffer 40 magic damage per second. 2610 gold.
  • Thornmail Thornmail: +100 armor. Unique Passive: On being hit, attacker suffers magic damage equal to 30% of the attack's damage (before armor reduction). 2000 gold.
  • Warden's Mail Warden's Mail: +50 armor, +20 health regeneration. Passive: On being hit, 20% chance for attacker's attack speed and movement to be slowed by 35% for 3 seconds. 1350 gold.
  • Wriggle's Lantern Wriggle's Lantern: +30 armor, +23 attack damage, +15% life steal. Unique Passive: On hit, 20% chance for target minion/monster to suffer 425 magic damage. Unique Active: Places a Sight Ward at target location. 3 minute cooldown. 1600 gold.
  • Zhonya's Hourglass Zhonya's Hourglass: +50 armor, +100 ability power. Unique Active: For 2 seconds, you are invulnerable and untargetable but cannot take any actions. 90 second cooldown. 3100 gold


Twisted Treeline[]

  • Grez's Spectral Lantern Grez's Spectral Lantern: +30 armor, +25 attack damage. Unique Passive: Your basic attacks against minions and monsters have a 20% chance to deal 300 bonus magic damage. Unique Active: A stealth-detecting mist grants vision in the target area for 10 seconds (1 minute cooldown). 1200 gold

Champion abilities[]

Note: Only the armor buff effect of these abilities is shown here, to read more information on each of these abilities, follow the link on each of them.

  • Akali's Akali's Twilight Shroud Twilight Shroud lays down a cloud of smoke for 8 seconds. While inside of the cloud, she gains 10 / 20 / 30 / 40 / 50 armor.
  • Anivia's Anivia's Rebirth Rebirth allows her to enter an egg-state for up to 6 seconds upon reaching 0 health. While in this state, she will receive an armor modifier of Error: Parameter '3' is not accepted..
  • Annie's Annie's Molten Shield Molten Shield increases her armor by 20 / 30 / 40 / 50 / 60 for 8 seconds.
  • Elise's Elise's Spider Form Spider Form increases her armor by 10 / 15 / 20 / 25.
  • Galio's Galio's Bulwark Bulwark increases an allied champion's armor by 30 / 45 / 60 / 75 / 90 for 4 seconds.
  • Garen's Garen's Courage Courage increases his armor by 20%.
  • Graves' Graves' True Grit True Grit increases his armor by Error: Parameter '3' is not accepted. every second he remains in combat. This bonus stacks up to 10 times. Graves is considered in combat if he has dealt or received damage in the last 3 seconds.
  • Jarvan IV's Jarvan IV's Demacian Standard Demacian Standard passively increases his armor by 10 / 13 / 16 / 19 / 22. When activated it throws a flag to a target location that grants the passive benefit to nearby allies and to himself again.
  • Jax's Jax's Grandmaster's Might Grandmaster's Might increases his armor by 25 / 35 / 45 (+30% bonus AD) for 8 seconds.
  • Jayce's Jayce's Transform: Mercury Hammer Transform: Mercury Hammer increases his armor by 5 / 15 / 25 / 35.
  • Kennen's Kennen's Lightning Rush Lightning Rush increases his armor by 10 / 20 / 30 / 40 / 50 for 4 seconds.
  • Lee Sin's Lee Sin's Iron Will Iron Will increases his armor by 10 / 15 / 20 / 25 / 30 for 5 seconds.
  • Leona's Leona's Eclipse Eclipse increases her armor by 30 / 40 / 50 / 60 / 70 for 3 seconds, deals damage after that time to units around her, and retains the defensive buff for an additional 3 seconds if any enemy is struck by the blast.
  • Malphite's Malphite's Brutal Strikes Brutal Strikes increases his armor by 20% / 25% / 30% / 35% / 40% for 6 seconds.
  • Master Yi's Master Yi's Meditate Meditate causes him to channel for up to 5 seconds, increasing his armor by 100 / 150 / 200 / 250 / 300 for the duration.
  • Mordekaiser's Mordekaiser's Creeping Death Creeping Death increases an allied unit's armor by 10 / 15 / 20 / 25 / 30 for 6 seconds.
  • Nidalee's Nidalee's Aspect of the Cougar Aspect of the Cougar increases her armor by 10 / 20 / 30 while active.
  • Olaf's Olaf's Ragnarok Ragnarok increases his armor by 30 / 45 / 60 for 6 seconds.
  • Orianna's Orianna's Command: Protect Command: Protect increases an allied champion's armor by 10 / 15 / 20 / 25 / 30 for as long as the ball is attached to them.
  • Poppy's Poppy's Paragon of Demacia Paragon of Demacia increases her armor by 1.5 / 2 / 2.5 / 3 / 3.5 for 5 seconds upon attacking or being hit by an enemy, stacks up to 10 times. She can also activate this ability to gain max stacks.
  • Rammus' Rammus' Defensive Ball Curl Defensive Ball Curl increases his armor by 40 / 60 / 80 / 100 / 120 for 6 seconds.
  • Rengar's Rengar's Battle Roar Battle Roar Rengar lets out a battle roar, damaging enemies increases his Armor by 15 / 22 / 29 / 36 / 43 for 3 seconds.
  • Shyvana's Shyvana's Dragon's Descent Dragon's Descent passively increases her armor by 10 / 15 / 20. This bonus is doubled while she is in Dragon Form.
  • Singed's Singed's Insanity Potion Insanity Potion increases his armor by 35 / 50 / 65 for 25 seconds.
  • Sona's Sona's Aria of Perseverance Aria of Perseverance:
    • Aura: increases nearby allied champions' armor by 3 / 6 / 9 / 12 / 15 while active and persists for two seconds after deactivation.
    • Activation: increases hers and one nearby allied champion's armor by an extra 8 / 11 / 14 / 17 / 20 for 1 second.
  • Soraka's Soraka's Astral Blessing Astral Blessing increases an allied unit's armor by 25 / 45 / 65 / 85 / 105 for 3 seconds.
  • Taric's Taric's Shatter Shatter passively increases his armor by 10 / 15 / 20 / 25 / 30 while the ability is not on cooldown and grants himself and nearby allied units' the same bonus again as a permanent aura.
  • Trundle's Trundle's Agony Agony targets an enemy to steal their armor by 15% / 20% / 25%. This amount is doubled over the next 6 seconds. Trundle increases his own armor by the same flat amount as the armor they enemy lost.
  • Urgot's Urgot's Hyper-Kinetic Position Reverser Hyper-Kinetic Position Reverser increases his armor by 60 / 90 / 120 for 5 seconds upon activation.
  • Wukong's Wukong's Stone Skin Stone Skin passively grants him Error: Parameter '3' is not accepted. armor for each nearby enemy champion.
  • Xerath's Xerath's Ascended Form Ascended Form passively grants 15% of his ability power as bonus armor.
  • Xin Zhao's Xin Zhao's Crescent Sweep Crescent Sweep increases his armor by 15 / 20 / 25 for each enemy champion hit for 8 seconds.

Masteries[]

  • Hardiness increases your champion's armor by 2 / 4 / 6.

Runes[]

Ways to reduce armor[]

See armor penetration. Note that armor penetration and armor reduction are different.

List of champions' armor[]

Highest and lowest base armor
Champion level Top 5 Bottom 5
Level 1 23.5 Darius Darius 9 Sona Sona
22.8 Skarner Skarner 10 Heimerdinger Heimerdinger
22.5 Cho'Gath Cho'Gath 10.55 Zilean Zilean
22 Maokai Maokai
Poppy Poppy
11 Orianna Orianna
21.75 Malphite Malphite 11.2 Soraka Soraka
Level 18 90 Maokai Maokai
Poppy Poppy
61 Heimerdinger Heimerdinger
88 Hecarim Hecarim 62 Orianna Orianna
87.4 Skarner Skarner 65.1 Sona Sona
87.3 Pantheon Pantheon 67.6 Garen Garen
Trundle Trundle
87 Shen Shen 68 Jarvan IV Jarvan IV

Notes: Taric's Taric's Shatter Shatter and Shyvana's Shyvana's Dragon's Descent Dragon's Descent passively increase their respective armor to 134 and 99 at level 18, topping the charts. In addition, Jarvan IV's Jarvan IV's Demacian Standard Demacian Standard passively increases his armor to 90 at level 18, tying with Maokai Maokai and Poppy Poppy.

Trivia[]

A level 18 Malphite Malphite with 6 Thornmails Thornmails, 3 points in Hardiness, Astral Blessing Astral Blessing, Bulwark Bulwark, Aria of Perseverance Aria of Perseverance, Command: Protect Command: Protect, Aegis of the Legion Aegis of the Legion aura, Marks and Glyphs of Resilience, Seals and Quintessences of Defense, and Brutal Strikes Brutal Strikes enabled will give a total of approximately 1461 armor. Switching Orianna Orianna for Trundle Trundle and having an enemy Trundle Trundle with the same setup use Agony Agony on Malphite Malphite and the allied Trundle Trundle use Agony Agony on the enemy Trundle Trundle, will yield a total of approximately 1824 armor. This is the highest possible amount of armor, which is 94.9% reduction.

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