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Damage conversion

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Damage conversion is a type of modifier that changes one type of damage into another.

Forms

Damage conversion is used by modifiers on skills, passive skills, equipment, and monsters. It comes in two main forms:
xx% of [Damage Type] Converted to [Damage Type]

For example the level 1 Cold to Fire support gem has the modifier 50% of Cold Damage Converted to Fire Damage

xx% of [Damage Type] Added as [Damage Type]

For example the level 1 Burning Arrow skill gem has the modifier 50% of Physical Damage Added as Fire Damage (Note: possibly wrong, skill says "50% of Physical Damage Converted to Fire Damage")

The difference between these forms is the effect they have on the original damage. Converted to modifiers replace the original damage with the new damage, while Added as preserves the original damage, adding the new damage to the total. These two modifiers do not interfere with one another in any way.

Converted to

For this type of modifier, the original damage is replaced with the converted damage. The amount of any given damage type that can be converted in this way cannot exceed 100%. If the combined value of all Converted to modifiers for a given damage type is greater than 100%, the values are scaled so that the total is 100% (ref) . Conversion from skill gems takes priority over conversion from other sources (such as equipment), and is not scaled. For example:

  • A player is wielding a bow that deals 100 Physical Damage,
  • a Blackgleam quiver that has 40% of Physical Damage converted to Fire Damage,
  • and Hrimsorrow gloves that have 25% of Physical Damage converted to Cold Damage.
  • The player is using the skill Lightning Arrow, which has 50% of Physical Damage converted to Lightning Damage
The total in this is example is 115% of Physical Damage, and must be scaled. Since it comes from a skill gem, Lightning Arrow's modifier takes priority and is not scaled. The other two are scaled evenly to convert the remaining 50% of physical damage.
40 * (50/65) = 30.77% Converted to Fire Damage by Blackgleam
25 * (50/65) = 19.23% Converted to Cold Damage by Hrimsorrow
In summary, the resulting converted damage would be 50 Lightning Damage, 31 Fire Damage, and 19 Cold Damage, and 0 Physical Damage, a total of 100 Damage.

Added as

This modifier does not replace the original damage, instead it takes a portion of the damage and adds it to the total as a different damage type. Damage added in this way can exceed 100% of the source damage type, and does not need to be scaled. For example:

  • A player is wielding a bow that deals 100 Physical Damage, and using a Blackgleam quiver, Hrimsorrow gloves, and Lightning Arrow, as in the above example,
  • the Lightning Arrow skill is supported by a level 1 Added Fire Damage gem, which has 20% of Physical Damage Added as Fire Damage
In this example the result of the Converted to modifiers is the same as in the above example, the amounts are scaled to a total of 100% as normal. The Added Fire Damage gem adds an additional 20% of the Physical Damage as Fire Damage
In summary, the resulting converted damage would be 50 Lightning Damage, 51 Fire Damage, and 19 Cold Damage, and 0 Physical Damage, a total of 120 Damage.

Taken as

On the receiving side, damage may be taken as a different type. This is done before any sort of mitigation.

Sources

Skills

Items

Unique items which convert damage include:

  • Converted to cold:
  • Asphyxia's WrathAsphyxia's Wrath
    Two-Point Arrow Quiver
    Requires Level 10(20 to 30)% increased Accuracy Rating(8 to 12)% increased Attack Speed
    +(30 to 40)% to Cold Resistance
    (30 to 40)% increased Chill Duration on enemies
    20% of Physical Damage Converted to Cold Damage
    (7 to 10)% chance to Freeze
    40% reduced Radius of Curses
    Curses on Slain enemies are transferred to a nearby enemy
    Mist of breath
    Icing to lips and throat
    As the warm ones choke and fall
    Upon the frozen wasteland.
  • HrimsorrowHrimsorrow
    Goathide Gloves
    Evasion Rating: 42
    Requires Level 9, 17 Dex+(20 to 30) to Strength
    50% increased Evasion Rating
    +(10 to 20)% to Cold Resistance
    25% of Physical Damage Converted to Cold Damage
    Reflects 10 Cold Damage to Melee Attackers
    Of ancient giants, none remain,
    Their only trace is timeless pain.
  • Converted to fire:
  • PyrePyre
    Sapphire Ring
    Requires Level 11+(20 to 30)% to Cold Resistance+(25 to 35)% to Fire Resistance
    (25 to 35)% increased Burning Damage
    100% of Cold Damage Converted to Fire Damage
    10% increased Light Radius
    Ignited enemies you hit are destroyed on Kill
    Let winter come. It will only make my fire burn brighter.
  • BlackgleamBlackgleam
    Fire Arrow Quiver
    Requires Level 22Adds 4–8 Fire Damage10% increased Attack Speed
    +20 to Evasion Rating
    +(10 to 30) to maximum Mana
    (30 to 50)% of Physical Damage Converted to Fire Damage
    Molten feather, veiled spark,
    Hissing arrows from the dark.
  • Chernobog's PillarChernobog's Pillar
    Ebony Tower Shield
    Chance to Block: 28%
    Armour: (788 to 895)
    Requires Level 61, 159 Str(120 to 150)% increased Armour
    +(35 to 50)% to Fire Resistance
    25% of Physical Damage Converted to Fire Damage
    5% chance to Curse Enemies with Enfeeble on Hit
    Fire Dances with those who doubt
    Licks the skin and flesh from the fearful
    Where there is no fear
    There is no flame
  • The Goddess ScornedThe Goddess Scorned
    Elegant Sword
    One Handed Sword
    Physical Damage: (56–88 to 64–100)
    Critical Strike Chance: (9.5 to 10.5)%
    Attacks per Second: 1.60
    Requires Level 28, 46 Str, 55 Dex18% Increased Accuracy RatingUses both hand slots
    (250 to 300)% increased Physical Damage
    (90 to 110)% increased Critical Strike Chance
    (15 to 20)% increased Global Critical Strike Multiplier
    +(40 to 50)% to Fire Resistance
    Cannot be Ignited
    100% of Physical Damage Converted to Fire Damage
    Ignited Enemies Burn 50% faster
    You can only deal Damage with this Weapon and Ignite
    Her purpose seems done; the oath is fulfilled.
    Rust dulls her smirk with the last demon killed.
    The embers grow dim and yet hope burns her lips:
    "An old flame renewed can define our eclipse!"
  • Converted to chaos:
  • Infernal MantleInfernal Mantle
    Occultist's Vestment
    Energy Shield: (406 to 462)Requires Level 62, 180 Int(3 to 10)% increased Spell Damage+1 to Level of Fire Gems in this item
    (25 to 35)% increased Fire Damage
    100% increased Global Critical Strike Chance
    (190 to 230)% increased Energy Shield
    25% of Fire Damage Converted to Chaos Damage
    100% increased Spell Damage taken when on Low Mana
    Despair hums, softly, deadly, in the bones of my enemies.
    Eyes will burn, and souls wither, as they bask in my radiance.
  • Lightbane RaimentLightbane Raiment
    Ornate Ringmail
    Armour: (407 to 444)
    Energy Shield: (119 to 130)
    Requires Level 47, 69 Str, 69 Int(120 to 140)% increased Armour and Energy Shield
    10% of Physical Damage Converted to Chaos Damage
    Reflects 30 Chaos Damage to Melee Attackers
    25% reduced Light Radius
    50% chance on Block to create Desecrated Ground
    ... And the Light faded and hope waned
    Zahndethus cast aside his faith
    and embraced the darkness.
  • DarkscornDarkscorn
    Maraketh Bow
    Bow
    Physical Damage: (50–152 to 57–171)
    Critical Strike Chance: 5%
    Attacks per Second: 1.38
    Requires Level 62, 212 Dex(6 to 12)% increased Elemental Damage with Weapons(100 to 125)% increased Physical Damage
    Adds (6-10 to 10-14) Physical Damage
    10% increased Attack Speed
    25% of Physical Damage Converted to Chaos Damage
    (15 to 30)% increased Accuracy Rating
    25% of Physical Damage taken as Chaos Damage
    "The Spirit of War knows nothing of good and evil. It knows only destruction."
    - Sekhema Asenath
  • Voltaxic RiftVoltaxic Rift
    Spine Bow
    Bow
    Physical Damage: 24–71
    Elemental Damage: (1–275 to 1–325)
    Critical Strike Chance: 5%
    Attacks per Second: (1.49 to 1.55)
    Requires Level 64, 212 DexAdds (1–275 to 1–325) Lightning Damage
    (10 to 15)% increased Attack Speed
    100% of Lightning Damage Converted to Chaos Damage
    10% Chance to Shock
    Your Chaos Damage can Shock
    The eldritch storm descended upon us, and bruised lightning rained down. Metal withered and flesh melted before its arcane power. There was no escape, no shelter. Only despair.
  • Mortem MorsuMortem Morsu
    Fright Claw
    Claw
    Physical Damage: (18–72 to 20–82)
    Critical Strike Chance: 8.12%
    Attacks per Second: 1.62
    Requires Level 34, 61 Dex, 61 Int6% of Physical Attack Damage Leeched as Life(75 to 100)% increased Physical Damage
    20% increased Attack Speed
    25% increased Critical Strike Chance
    25% increased Global Critical Strike Multiplier
    (10 to 20)% of Physical Damage Converted to Chaos Damage
    Poisonous Hit
    25% reduced Enemy Stun Threshold with this Weapon
    Fear blisters the heart and thins the blood.
    Fear squeezes lungs and sets the guts to fester.
    Fear is the wound left untended.
  • Taken as:
  • Cloak of FlameCloak of Flame
    Scholar's Robe
    Energy Shield: 41Requires Level 18, 55 Int+(30 to 50)% to Fire Resistance
    (30 to 50)% increased Ignite Duration on enemies
    10% chance to Ignite
    Reflects 15 Fire Damage to Melee Attackers
    20% of Physical Damage taken as Fire Damage
    He who sows embers shall reap hellfire.
  • Incandescent HeartIncandescent Heart
    Saintly Chainmail
    Armour: (761 to 878)
    Energy Shield: (216 to 235)
    Requires Level 70, 99 Str, 115 Int+(60 to 80) to Armour
    (120 to 140)% increased Armour and Energy Shield
    +(80 to 90) to maximum Life
    (4 to 5)% of Physical Attack Damage Leeched as Life
    25% of Elemental Damage taken as Chaos Damage
    (20 to 30)% increased Light Radius
    Light Radius is based on Energy Shield instead of Life
    Only light may banish the shadows from this land
    And the black lies wrapped around your heart
  • Lightning CoilLightning Coil
    Desert Brigandine
    Armour: (509 to 590)
    Evasion Rating: (509 to 590)
    Requires Level 60, 96 Str, 96 DexAdds (1–1 to 20–30) Lightning Damage
    (90 to 120)% increased Armour and Evasion
    +(60 to 80) to maximum Life
    −60% to Lightning Resistance
    40% of Physical Damage taken as Lightning Damage
    "There's nothing like imminent death
    to galvanize one's purpose in life."
    - Malachai the Soulless
  • DarkscornDarkscorn
    Maraketh Bow
    Bow
    Physical Damage: (50–152 to 57–171)
    Critical Strike Chance: 5%
    Attacks per Second: 1.38
    Requires Level 62, 212 Dex(6 to 12)% increased Elemental Damage with Weapons(100 to 125)% increased Physical Damage
    Adds (6-10 to 10-14) Physical Damage
    10% increased Attack Speed
    25% of Physical Damage Converted to Chaos Damage
    (15 to 30)% increased Accuracy Rating
    25% of Physical Damage taken as Chaos Damage
    "The Spirit of War knows nothing of good and evil. It knows only destruction."
    - Sekhema Asenath

Passives

The following passives convert damage:

Name Bonuses
Avatar of Fire
  • 50% of Physical Damage Converted to Fire Damage
  • 50% of Lightning Damage Converted to Fire Damage
  • 50% of Cold Damage Converted to Fire Damage
  • Deal no Non-Fire Damage
Wand Cold Damage
  • 10% of Wand Physical Damage Added as Cold Damage
Wand Fire Damage
  • 10% of Wand Physical Damage Added as Fire Damage

Corruption

Using a Vaal OrbVaal Orb
Stack Size: 10Corrupts an item, modifying it unpredictablyRight click this item then left click an item to corrupt it. Corrupted items cannot be modified again.
Shift click to unstack.
on an Quiver or Scepter has a chance to replace it's implict with

  • 10-20% of Physical damage converted to Cold Damage
  • 10-20% of Physical damage converted to Lightning Damage
  • 10-20% of Physical damage converted to Fire Damage

Interaction with other modifiers

Converted damage is affected by modifiers that apply to be both the original damage type it was converted from, and the new damage type that is was converted to. For example Fire Damage that is added by the Added Fire Damage gem will be affected by both increased Physical Damage modifiers and increased Fire Damage modifiers.

Also, converted damage can itself be converted. For example:

  • A player is wielding a weapon that deals 100 Physical Damage,
  • the player is affected by a level 10 Hatred aura which has the modifier 30% of Physical Damage Added as Cold Damage,
  • the player is using an attack supported by a level 1 Cold to Fire support gem, with the modifier 50% of Cold Damage Converted to Fire Damage
In this example 30% of the Physical Damage is added as Cold damage, and 50% of that Cold damage is converted to Fire. The resulting damage is therefore 100 Physical Damage, 15 Cold Damage, and 15 Fire Damage.
  • The Physical Damage was not the result of a conversion, and so is only affected by modifiers that affect Physical Damage, as normal
  • The Cold Damage will be affected by any mods that affect either Physical Damage or Cold Damage
  • The Fire Damage will be affected by any mods that affect Physical, Cold or Fire Damage

Example calculation

Imagine a player wielding a sword that deals 100 Physical Damage, and performs an attack with the following modifiers:

  • 50% of Physical Damage converted to Cold Damage from a skill gem
  • 30% of Physical Damage converted to Fire Damage from gear
  • 30% of Physical Damage converted to Lightning Damage from gear
  • 30% of Physical Damage Added as Fire Damage from a support gem
  • 15% of Physical Damage Added as Cold Damage from a support gem
  • 50% of Cold Damage converted to Fire Damage from a support gem
  • Adds 30 Cold Damage from a support gem
  • 30% more Physical Damage from a support gem
  • 70% more Weapon Elemental Damage from a support gem
  • 80% increased Physical Damage with Swords from passive skills
  • 30% increased Melee Physical Damage from Strength and passive skills
  • 20% increased Fire Damage from passive skills
  • 15% increased Cold Damage from passive skills

First off, there is more than 100% of physical damage conversion, so the values are scaled to total 100%. As a result, 50% of physical damage will become Cold Damage, 25% will become Fire Damage, and 25% will become Lightning Damage.

The Cold Damage

The amount of Cold damage that has been converted from Physical is 65 (50 Converted to, 15 Added as). 50% of the Cold Damage is Converted to Fire, leaving us with 32.5 remaining Cold Damage. This damage is affected by all Cold and Physical Damage modifiers:

80 + 30 + 15% = 125% increased damage
30% more damage
70% more damage
  • 32.5 * (1 + 0.8 + 0.3 + 0.15) * 1.3 * 1.7 = 161.6 Cold Damage

There is also 30 Cold Damage added by a support gem which was not the result of a conversion. 50% of this is Converted to Fire, and the remaining 15 is affected by all Cold Damage modifiers:

15% increased damage
70% more damage
  • 15 * (1 + 0.15) * 1.7 = 29.3 Cold Damage

The Lightning Damage

There is 25 Lightning Damage that was converted from Physical. This damage is affected by all Lightning and Physical Damage modifiers:

80 + 30 = 110% increased damage
30% more damage
70% more damage
  • 25 * (1 + 0.8 + 0.3) * 1.3 * 1.7 = 116.0 Lightning Damage

The Fire Damage

There is 55 Fire Damage that was converted from Physical. This damage is affected by all Fire and Physical Damage modifiers:

80 + 30 + 20 = 130% increased damage
30% more damage
70% more damage
  • 55 * (1 + 0.8 + 0.3 + 0.2) * 1.3 * 1.7 = 279.6 Fire Damage

There is also 32.5 Fire Damage that was converted from Cold that was converted from Physical. This damage is affected by all Fire, Cold, and Physical Damage modifiers:

80 + 30 + 20 + 15 = 145% increased damage
30% more damage
70% more damage
  • 32.5 * (1 + 0.8 + 0.3 + 0.2 + 0.15) * 1.3 * 1.7 = 176.0 Fire Damage

There is also 15 Fire Damage that was converted from Cold. This damage is affected by all Fire and Cold Damage modifiers:

20 + 15 = 35% increased damage
70% more damage
  • 15 * (1 + 0.2 + 0.15) * 1.7 = 34.4 Fire Damage

The Final Damage

In summary we have

29.3 Cold Damage
161.6 Cold Damage (from Physical)
116.0 Lightning Damage (from Physical)
279.6 Fire Damage (from Physical)
176.0 Fire Damage (from Cold, from Physical)
34.4 Fire Damage (from Cold)

For a total of 190.9 Cold, 490.0 Fire, and 116.0 Lightning Damage, a grand total of 796.9 damage.