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Defense is a player statistic that determines how much damage can be taken per hit. On non-Expert mode worlds, the damage the player takes is reduced by half of their defense value, altogether. In Expert mode, damage the player takes is reduced by three-quarters of their defense value, rounded up. Defense can be increased by equipping armor and accessories, or temporarily boosted by various buffs. No attack can be reduced below 1 damage (with the exception of a player with an ally wearing the Paladin's Shield).

Some forms of damage are impossible to reduce through defense. Damage from health-draining Debuffs like Cursed Inferno, drowning in water, or colliding with a boulder are not reduced by defense.

Damage taken from lava can be reduced through defense.

Mechanics[edit | edit source]

Defense gives a flat reduction in damage: i.e. damage is reduced by a fixed amount per hit (as opposed to a multiplicative damage reduction, which would reduce damage by a percentage).

Normal mode Formula[edit | edit source]

The formula is:

net damage = attack - (defense * 0.5)

For example:

  • With 20 Defense, a 40 Damage attack is reduced by 10, resulting in 30 damage taken.
  • With 30 Defense, a 40 Damage attack is reduced by 15, resulting in 25 damage taken.

Expert mode Formula Desktop VersionConsole Version[edit | edit source]

In expert mode, the formula is:

net damage = attack - (defense * 0.75)

For example:

  • With 20 Defense, a 40 Damage attack is reduced by 15, resulting in 25 damage taken.
  • With 30 Defense, a 40 Damage attack is reduced by 23, resulting in 17 damage taken.

Note that in expert mode only the player's defense follows the formula. Enemies will still take the same amount of damage as in normal mode.

Enemies[edit | edit source]

Enemies have a defense statistic just like players do, but they do not gain more protection from defense in Expert mode. Enemies will always reduce incoming damage by 50% of their defense regardless of difficulty. Monsters with high defense will take virtually no damage from low damage weapons (e.g. Fire Imps take 5 damage from the Minishark with Musket Balls). Accordingly, when fighting high defense monsters, high damage weapons are preferable.

Armor[edit | edit source]

Armor is a set of equipable defense items that reduce damage taken from enemies and most other damage sources. Armor pieces are equipped by placing them in the Armor slots of the player's inventory. Armor can also be placed in vanity slots to change the player's appearance without affecting stats.

In addition to the defense provided by individual Armor pieces, most Armor types provide a "Set Bonus" when all three pieces of the same Armor type are worn simultaneously. For the basic Pre-Hardmode Ore armors (Copper, Tin, Iron, Lead, Silver, Tungsten, Gold, and Platinum), this is an additional defense bonus. More advanced or unique Armors can provide other specialized set bonuses (e.g. the Shroomite Armor will provide invisibility when not moving).

See the full page here, which includes an overview, a full list of armor types, and descriptions of each armor set.

Defense boosts[edit | edit source]

Here is a list of accessories, and their respective defense bonuses. A list of armor including defenses can be found on the armor page.

Item Accessory Defense
ShackleShackle 1
Cobalt ShieldCobalt Shield 1
Obsidian SkullObsidian Skull 1
Shield of CthulhuShield of CthulhuDesktop VersionConsole Version 2
Obsidian ShieldObsidian Shield 2
Moon CharmMoon Charm 3 (only during the night)
Moon ShellMoon Shell 3 (only during the night)
Moon StoneMoon Stone 4 (only during the night)
Sun StoneSun Stone 4 (only during the day)
Celestial StoneCelestial Stone 4
Ankh ShieldAnkh Shield 4
Paladin's ShieldPaladin's Shield 6 (Absorbs 25% of damage done to players on your team, Only active above 25% life)
Celestial ShellCelestial ShellDesktop VersionConsole Version 4 (during the day)
7 (during the night)
Flesh KnucklesFlesh KnucklesDesktop VersionConsole Version 7
Frozen Turtle ShellFrozen Turtle Shell 0 until below 50% health when it reduces total damage by 25% Desktop VersionConsole Version
30 (When below 25% health) Old-gen console versionMobile Version3DS version
Modifiers 4 (Max per accessory)
Buff / Debuff Temporary Defense
Well FedWell Fed 2
Dryad's BlessingDryad's BlessingDesktop VersionConsole Version 8
IronskinIronskin 8
TipsyTipsy Defense reduced by 4
WeakWeak Defense reduced by 4
IchorIchor Defense reduced by 20
Broken ArmorBroken Armor Defense reduced by half

Damage reduction boosts[edit | edit source]

All damage reduction boosts (except Paladin's Shield) affect damage taken after defense.

Buff Source Damage reduction bonus
Solar BlazeSolar BlazeDesktop VersionConsole Version Solar Flare armorSolar Flare armorDesktop VersionConsole Version 30%
Beetle EnduranceBeetle Endurance Beetle armorBeetle armor 15% / 30% / 45%
Paladin's ShieldPaladin's Shield Paladin's ShieldPaladin's Shield 25% (Only active above 25% life)
EnduranceEndurance Endurance PotionEndurance Potion 10%
Ice BarrierIce Barrier Frozen Turtle ShellFrozen Turtle Shell 0 Old-gen console versionMobile Version3DS version / 25% (When below 50% health) Desktop VersionConsole Version
WarmthWarmthDesktop VersionConsole VersionOld-gen console versionMobile Version Warmth PotionWarmth PotionDesktop VersionConsole VersionOld-gen console versionMobile Version 30% (Reduces damage only from cold-themed enemies)
Item Source Damage reduction bonus
Worm ScarfWorm ScarfDesktop VersionConsole Version Treasure Bag (Eater of Worlds)Treasure Bag (Eater of Worlds)Desktop VersionConsole Version 17%

Armor Penetration[edit | edit source]

Desktop versionConsole version Desktop/Console-Only Content: This section's information applies only to the Desktop and Console versions of Terraria.

Armor penetration is a statistic that reduces the defense of the player's targets. For instance, a Pixie normally has 20 defense. If the player has 5 Armor Penetration, then the Pixie will be taken to have 15 defense instead.

Source Armor penetration bonus
Shark Tooth NecklaceShark Tooth NecklaceDesktop VersionConsole Version 5
Sharpening StationSharpening StationDesktop VersionConsole Version 4 for Melee Weapons only

Notes[edit | edit source]

Defense[edit | edit source]

Click to see a list of pages with rewrite requests It has been suggested that this page/section be rewritten.
Reason: "Needs version separation: all info are Desktop version Desktop only."

The highest possible defense is 165 normally, and 173 in Expert modeDesktop VersionConsole Version, using the following setup:

79 + 48 + 18 + 20 = 165 (normal) and 79 + 56 + 18 + 20 = 173 (expert)

Damage reduction[edit | edit source]

The highest damage reduction possible is 73%, using the following setup:

(1 - 0.45) * (1 - (0.25 + 0.17 + 0.1) ) = 0.264 = 26.4% damage taken = 73.6% damage reduction

Trivia[edit | edit source]

  • Although not possible in-game, if a piece of armor were to gain a modifier, it would apply the effects just like an accessory would. For example, a set of Warding modified armor would add 12 defense total; each piece adds 4 defense to the total.
  • If the player somehow has negative defense, they will constantly take 1 damage, and die with the death message "<playername> couldn't put out the fire".