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Damage (Fallout 76)

(Redirected from Fallout 76 damage)
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FO76 publicteam xpd.pngFor an overview of the topic, see Damage.

Damage is the amount of Hit Points an attack will remove from its target. Reducing a target's Hit Points to zero will kill it.

Outgoing damage can be modified by weapon mods, perks, legendary effect bonuses, mutations, consumables, and for melee strikes and ranged weapon bash attacks the Strength attribute.

Incoming damage can be modified by Damage Resistance and other reduction, avoidance, and immunity effects.

Damage Formula

In Fallout 76, the damage an attack will deal to a target is calculated as follows:

  • OutgoingDamage is the attack damage after factoring in damage modifiers.
  • DamageResistMult is a multiplier that reduces your attack damage by a percentage (from 1% to 99%) depending on how high the OutgoingDamage and corresponding enemy Resistance value for the damage type.
  • DamageReduction is a multiplier that reduces your attack damage by a percentage outside of Resistance, e.g. the Scorchbeast Queen's 70% reduction, or a Mutant Slayer armor's 75% reduction. DamageReductions stack through multiplication.

Each of these factors is outlined below in detail.

Outgoing Damage

Damage before resistances and any other reductions is calculated as follows:

  • Base is the base damage according to a weapon's curve table plus any effects or weapon mods that directly add or subtract damage.
  • DamageBonus is the sum of most damage bonuses from Perks, weapon mods, consumables, and so on. This is an "additive bonus."
  • DamageMult is a damage multiplier that increases your total damage. After One Wasteland, many multiplicative damage bonuses became additive, though some remain, such as weapon receiver and barrel mods for non-physical damage types, Executioner's Legendary effect, Tenderizer, and Follow Through.

For example, a character using a semi-automatic rifle with a base 40 damage, Rifleman 3 (+20% damage bonus), Bloody Mess 3 (+15% damage bonus), and one stack of Tenderizer 3 (+10% damage received, or a 1.1x damage multiplier) will deal 59 Physical Damage before enemy defenses:

Ranged Damage

Ranged weapons are subject to weapon range, which determines the maximum distance at which the weapon will deal its maximum damage.

This "range multiplier" is a damage multiplier that starts at 1.0 if the target is within weapon range, scaling down as the target moves further away to a minimum of 0.5 at 200% of the weapon's range.

Going back to the semi-automatic rifle above, if it deals 59.4 Physical Damage at its max range of 150 units, then it will deal 29.7 Physical Damage to a target that is 300 units away.

Melee and Bash Damage

For one- and two-handed melee weapons and ranged weapon bash attacks, 5% is added to the damage bonus for each point of Strength the character has.

For unarmed melee weapons and fists, 10% is added to the damage bonus for each point of Strength the character has.

A character using an unarmed gauntlet with a base 50 damage, 5 Strength (5 x 10% = +50% damage bonus), and Gladiator 3 (+20% damage bonus) will deal 85 Physical Damage:

Bugs

PCPC Xbox OneXbox One Playstation 4Playstation 4 Visual bug: the damage bonus from Strength is not reflected on the PipBoy for any non-Physical Damage on melee weapons. The correct damage will still be dealt and is visible in floating damage numbers.

Multiple Damage Types

Many weapons are able to deal multiple Damage Types per attack, such as the Shishkebab which deals both Physical and Fire Damage. To get the total damage before defensive measures are factored in, one has to calculate the damage for each damage type separately and then add the values together.

A character using a fiery sword with a base 20 Physical and 40 Fire Damage, 10 Strength (10 x 5% = +50% damage bonus), Gladiator 3 (+20% damage bonus), Expert Gladiator 3 (+20% damage bonus), and Bloody Mess 3 (+15% damage bonus) will deal a total of 123 Damage (41 Physical and 82 Fire):

Weapon Mods

Physical Damage weapon mods typically increase or decrease the damage bonus. For example, a handmade rifle's hardened receiver will add 25% damage (+0.25 additive modifier) whereas its automatic receiver will subtract 10% damage (-0.1 additive modifier).

Energy, Fire, Cryo, and Poison Damage weapon mods, however, are damage multipliers. The laser gun's prime capacitor will add 25% damage multiplicatively (x 1.25) and it's automatic barrels will subtract 15% damage multiplicatively (x (1 - 0.15) = x 0.85):

There are some exceptions to the above, where a heating coil will add base Fire Damage to a super sledge, or a plasma blade will multiplicatively reduce the Physical Damage by 50% and add a sizeable amount of base Energy Damage to a war glaive.

VATS Critical attacks

Critical attacks in VATS are added onto the Outgoing damage. The sum is equal to base damage of the weapon multiplied by the critical hit modifier (usually 2.0; but can be increased with buffs and perks). Critical damage does not interact with sneak multiplier, it is added separately.

  • Ranged criticals: increases the chance to land the attack.
  • Melee criticals: multiplies the DamageCritical by 1.5
Bugs
  • PCPC Xbox OneXbox One Playstation 4Playstation 4 Holding down the critical button while performing successive criticals while using an automatic weapon will consume the charge, but will not apply the bonus damage.
  • PCPC Xbox OneXbox One Playstation 4Playstation 4 Critical hits dealt by explosive launchers, such as the Fat Man will not factor in the damage of the explosion. These weapons will instead calculate using the on-hit impact damage of the projectile, which is usually 1.

Damage Resistance

Most damage types have a corresponding Resistance that reduces the magnitude of that source of damage. The percentage of damage an attack deals after encountering its corresponding resistance is the following:

The min() and max() clauses ensure armor always reduces 1% of damage but never more than 99% of damage. These thresholds are achieved when the damage greatly exceeds the Resistance value and when the Resistance greatly exceeds the damage value, respectively.

A semi-automatic rifle that deals 100 Physical Damage against a target with 200 (Physical) Damage Resist will deal 38 Physical Damage:

Armor Penetration

Resistances, or armor, can be reduced with armor penetration effects from weapon mods, perks, and legendary effects. In the formulae above, armor penetration is reflected by reducing the Resist value by the penetration amount.

For example, a 100 Physical Damage pistol shot with Tank Killer 3 (+36% armor penetration) against 150 Damage Resist will deal 50 Physical Damage:

[FIXED] Elemental Resistances

Note: Prior to the patch on March 1, 2022, elemental damage types (e.g. Energy, Fire, Cryo, Poison, and Rad) were bugged and only factored in the base damage of the attack when determining the effect of Resistance. This bug led to various energy weapons and mods for other weapons that dealt these damage types to deal a significantly lower amount of damage than intended.

Damage Reduction

>> 
Main article: Damage reduction

Damage reductions from perks like Dodgy or innate to an enemy like the Scorchbeast queen's 70% reduction apply to all damage regardless of the Damage Type. They can also stack, multiplying together to greatly reduce incoming damage.

For example, when taking 200 Cryo Damage from an explosive cryo grenade, Fireproof 3, Dodgy 3, dense torso armor mod, and zero Cold Resist will all stack to reduce its damage to 38 Cryo Damage: