Damage Calculation

Please refer to the MHWI Damage Formula and MHWI General Data Sheet by MoonBunnie & Deathcream for up to date information.

Damage Type

When attacks strike a monster, two types of damage are dealt: Physical (Raw) damage, and Elemental damage (but only if the weapon has an Elemental attribute).

Some weapons have an [[abnormal status attribute|understanding-monster#status-ailments-on-monster]] instead of an Elemental attribute. These weapons will Physical damage and apply Status damage.

Physical damage includes Severing-type damage, Blunt-type damage, and Projectile-type damage. Elemental damage includes Fire, Water, Thunder, Ice, and Dragon. There are also other sources of damage such as Fixed damage and [[Status damage|understanding-monster#status-ailments-on-monster]]. All damage types are dealt independent of each other.


Severing (sometimes known as Cutting) damage is the primary damage type for the following weapons:

  • [[Great Sword|great-sword]]
  • [[Long Sword|long-sword]]
  • [[Sword and Shield|sword-and-shield]]
  • [[Dual Blades|dual-blades]]
  • [[Lance|lance]]
  • [[Gunlance|gunlance]]
  • [[Switch Axe|switch-axe]]
  • [[Charge Blade|charge-blade]]
  • [[Insect Glaive|insect-glaive]]

The following attacks also deal Severing damage:

  • [[Hunting Horn's|hunting-horn]] Handle Poke
  • [[Bow's|bow]] Melee Attack deals Severing damage
  • Some [[Kinsects|insect-glaive#kinsect]] deal Severing damage
  • Slicing shot from Bowguns

Tails can only be cut by Severing damage. This happens when sufficient Severing damage has been accumulated on the tail, which then severs it.


Blunt damage is the primary damage type for the following weapons:

  • [[Hammer|hammer]]
  • [[Hunting Horn|hunting-horn]]

The following attacks also deal Blunt damage:

  • [[Sword & Shield's|sword-and-shield]] shield-oriented attacks
    • Sword/Shield Combo
    • Shield Attack
    • Shield Bash
    • Hard Bash
    • Falling Bash
  • [[Lance's|lance]] Shield Attack
  • [[Kinsects|insect-glaive#kinsect]] with Blunt attribute

Blunt weapons deal [[Exhaust status|understanding-monster#Exhaust]] when they hit a monster. If they hit a monster's head, they deal [[Stun damage|understanding-monster#stun]].


Projectile damage is the primary damage type for the following weapons:

  • [[Light Bowgun|light-bowgun]]
  • [[Heavy Bowgun|heavy-bowgun]]
  • [[Bow|bow]]

[[Gunlance's|gunlance]] Shelling attacks deal Fixed damage instead of Projectile damage.


Elemental Attributes:

  • Fire
  • Water
  • Thunder
  • Ice
  • Dragon

Blademaster weapons can have an Elemental attribute, a Status attribute, or neither. Some Dual Blades have two Elemental/Status attributes, one for each blade.

The Bow may have an Elemental attribute. The Bowguns do not have natural Elemental attributes, but they can load Elemental shots that effectively functions as dealing Elemental damage when it hits a monster.

Elemental damage is mainly affected by the weapon's Elemental value and the monster's Elemental Hitzone. Abnormal Status damage is not affected by the monster's Physical or Elemental Hitzone values. Blademaster weapons have a 1-in-3 chance per hit to apply Abnormal Status damage, while Gunner weapons always apply Abnormal Status damage.

If a monster has [[no weakness to a specific element on their Hitzone|understanding-monster#monster-Hitzone]], then no Elemental damage is dealt. The Physical damage done by the weapon is not affected, as Elemental and Physical damage are calculated separately.

Status Attacks

Abnormal Status attributes:

  • Poison
  • Paralysis
  • Sleep
  • Blast

Blademaster weapons can have an Abnormal Status attribute instead of an Elemental attribute. Bows cannot have a natural Status attribute, but may equip Status Coatings to make fired arrows apply Status damage. Equipping Status Coatings will disable the Bow's Elemental attribute temporarily. The Bowguns do not have natural Abnormal Status attributes, but can load Status shots that apply Abnormal Status damage.

For Blademaster weapons, each time an attack lands, the attack has a 1-in-3 chance of applying[[Abnormal Status damage|understanding-monster#status-ailments-on-monster]]. For Gunner weapons, a successful hit will always apply Abnormal Status damage.

Applying Abnormal Status damage to a monster does not instantly activate it's effect. Instead, monsters have an innate tolerance to Status Ailments. To trigger a Status Ailment, enough Status damage must be dealt to a monster to overcome its tolerance threshold. Once a monster is affilicted with the Ailment, the accumulated Status damage is reset to 0 and additional Status damage cannot be dealt until the monster recovers. The only exception to this is [[Poison|understanding-monster#poison]].

After the monster recovers, its tolerance threshold for the Ailment increases. This means it takes more Status damage must be accumulated before being able to inflict the monster with the same Ailment.

For all Ailments (except Blast), the accumulated Status damage disappears gradually due to the monster's tolerances. Overcoming this gradual decay is necessary to successfully trigger a Status Ailment on a monster.

Icon Status Effect(s)
Poison Slowly drain the monster's health
Paralysis Temporarily immobilizes the monster and makes it take a bit more damage
Sleep Put the monster to sleep
Stun Stun/KO the monster, which topples and immobilizes it
Exhausted Drain the monster's stamina, making it tired
Blast Triggers an explosion on a specific monster part, which deals damage

Factors for Damage Calculation

The following factors influence damage calculations:

BM = Blademaster

Factor BM (Physical) BM (Elemental) Bowgun (Physical) Bowgun (Elemental)
Attack Value O O O O
Motion Value O O
Sharpness O O
Weapon Adjustment O O O O
Sharpness Adjustment O
Critical Hit O O
Monster Hitzone O O O O
Elemental Value O O
Projectile Adjustment O
Critical Distance O
Rapid Fire Adjustment O O

Attack Value

The Attack value of the Hunter is calculated from the Hunter's equipped weapon, offensive boosts (e.g. being in DB's Archdemon Mode or having a HH attack buff), equipped skills, items, and Food skills. When damage is calculated, only [[True values are used, and the Displayed Attack value is adjusted down by the Display Multiplier|status#display-multiplier]].

Motion Values

All weapon attacks have a Motion Value (MV), which determines what proportion of the Attack value is used in damage calculations. For example, a weaker move with 40 MV uses applies 40% of the Attack Value in calculating damage, while a stronger move with 80 MV applies 80% of the Attack Value in calculating damage.

In general, slow weapons make up for their slower attacks with larger MVs, and fast weapons make up for their faster attacks with smaller MVs.


Sharpness describes how sharp a weapon is. Sharper weapons deal more damage and are less likely to [[bounce|understanding-monster#bouncing]] when hitting [[tough body parts|understanding-monster#monster-Hitzone]].

Weapon Sharpness is split into discrete colors (see below). Different colors provide different multipliers to the damage dealt by the player.

Sharpness Icon Physical Elemental
Red [[images/sharpness_red) x0.50 x0.25
Orange [[images/sharpness_orange) x0.75 x0.50
Yellow [[images/sharpness_yellow) x1.00 x0.75
Green [[images/sharpness_green) x1.05 x1.00
Blue [[images/sharpness_blue) x1.20 x1.0625
White [[images/sharpness_white) x1.32 x1.125

In addition to lower damage, weaker Sharpness colors causes some weapons to lose functionality. For example, at Orange Sharpness, the Gunlance's shells will deal less damage, the Switch Axe may bounce while in Sword mode, and the Dual Blades will not complete its full Blade Dance animation. At Red Sharpness, the Gunlance cannot shell.

Sharpness Gauge and Consumption

Each weapon can only make a specific amount of hits in a specific sharpness color before it dulls and and the sharpness color is lowered. Sharpness is consumed when a player lands an attack, but some shield attacks from the SnS and Lance do not deplete Sharpness.


Although most attacks deplete Sharpness by one per hit, some weapons have attacks that deplete Sharpness faster:

Attack Sharpness Cost
Normal Attacks Landing 1
Normal Attacks Bounced 2
Guarding with GS or CB*, small knockback 1**
Guarding with GS or CB*, medium knockback 2**
Guarding with GS or CB*, large knockback 10**
Gunlance Shell, Normal 2
Gunlance Shell, Long 2
Gunlance Shell, Spread 3
Gunlance's Wyvern Fire 10
Gunlance's Burst Fire Shell Count x Shell Cost

*Charge Blade with Elemental Boost doesn't lose Sharpness when guarding. ** Doesn't lose sharpness when blocking roars, wind pressure, or tremors.

Sharpness can be restored by sharpening the weapon with a Whetstone.

Weapon Adjustment

Certain attacks have inherent damage bonuses:

Weapon Attack Name Physical Bonus Elemental Bonus
SnS Charged Slash +XXL
Dual Blades Demon Mode +M
Dual Blades When both blade strike at the same time -L
Great Sword Charged Slash Lv1 +S
Great Sword Charged Slash Lv2 +M
Great Sword Charged Slash Lv3 +XL
Great Sword Strong Charged Slash Lv1 +XXL
Great Sword Strong Charged Slash Lv2 +XXL
Great Sword Strong Charged Slash Lv3 +XXL
Long Sword White Spirit Gauge +XS
Long Sword Yellow Spirit Gauge +S
Long Sword Red Spirit Gauge +M
Lance Dash Attack -XXL
Gunlance Charged Shot (Normal/Long) +M
Gunlance Charged Shot (Spread) +XL
Gunlance Burst Fire (Normal) +S
Gunlance Burst Fire (Spread) -S
Gunlance Wyvern Fire (Long) +M
Switch Axe Power Phial +M
Switch Axe Elemental Phial +L
Charge Blade Elemental Phial +XXL
Charge Blade Elemental Boost (Axe Mode) +M
Insect Glaive Red+White +M
Insect Glaive Red+White+Orange +M
Bow Power Phial +XL
Bow Elemental Phial +XL
Bow Melee Attack -XXL
Bow Charge Lv 1 -XXL -L
Bow Charge Lv 2 - M
Bow Charge Lv 3 +XL
Bow Charge Lv 4 +XXL +M
Bow Arc Shot -L -L
Bowgun Normal +L

Sharpness Adjustment

Some moves modify Sharpness, which affects both damage output and the liklihood to [[bounce|understanding-monster#bouncing]].

Weapon Condition Sharpness Adjustment
Blademaster weapon Yellow Sharpness. At the start of weapon swing -XL
Blademaster weapon Yellow Sharpness. At the end of weapon swing -L
All Melee Attack Have the buff from Demon shot +S
Sword & Shield All Attack +XS
Great Sword All Charged Attack, Lv 1 +S
Great Sword All Charged Attack, Lv 2 +M
Great Sword All Charged Attack, Lv 3 +L
Great Sword Hit with the middle of the blade +XS
Long Sword Max Spirit Gauge +S
Long Sword Hit with the middle of the blade +XS
Lance* Damage based on Blunt Hitzone -L
Bow Melee Attack with Close Range Coating + L

* Lance/Hitzone Selection

Critical Hits and Feeble Hits

When an attack makes a Critical Hit, additional damage is dealt. When an attack makes a Feeble Hit, damage is reduced.


Critical Hits occur when a weapon has a positive Affinity value. Positive Affinity refers to the probability of making a Critical Hit on an attack. For example, a weapon with 20% Affinity will have a 20% chance of dealing a Critical Hit on an attack. Higher Affinity values will increase the likelihood of dealing a Critical Hit. A successful Critical Hit applies a +25% bonus to the weapon's Attack Value when calculating damage.

Feeble Hits occur when a weapon has a negative Affinity value. Negative Affinity refers to the probability of making a Feeble Hit on an attack. For example, a weapon with -20% affinity has a 20% chance of dealing a Feeble Hit. Lower negative Affinity Values increase the likelihood of dealing Feeble Hits. A Feeble Hit applies a -25% debuff to the weapon's Attack Value when calculating damage.

The below table briefly illustrates the interaction between Affinity and the probability of making a Critical or Feeble Hit:

Affinity Probability Damage Multiplier
60% 60% x1.25
20% 20% x1.25
0% 0% x1.0
-20% 20% x0.75
-60% 60% x0.75

Some skills influence Affinity values:

Skill/Food Skill Effects
Critical Eye 1 +1%

Monster Hitzone

Monsters are comprised of different body parts, and [[each part has has different weaknesses|understanding-monster#monster-Hitzone]] to Physical damage and Elemental damage. The Physical weakness of a Hitzone does not affect it's Elemental weakness, and vice versa. If a Hitzone is not weak to a specific Element (i.e. a Hitzone value of 0), then no Elemental damage is dealt, but Physical damage is not impacted.

The higher the Hitzone value, the weaker it is. For example, if a monster's head has Hitzone values of 20/50/40 (corresponding to the Severing, Blunt, and Projectile damage types respectively), then Severing-type attacks deal 20% of its damage, Blunt-type attacks deal 50% of its damage, and Projectile-type attacks deal 40% of its damage.

A Hitzone is generally considered vulnerable when its Physical Hitzone value is 45 or higher or when its Elemental Hitzone value is 20 or higher.

Elemental Value

When a weapon with an Elemental attribute lands an attack, the weapon will deal Elemental damage on top of the Physical damage it deals. Player-dealt Elemental damage does not inflict [[Elemental Blights|status#elemental-resistance]] on monsters.

Unlike Physical damage, Elemental damage is not affected by Motion Values. However, some weapons may confer a bonus to its Elemental damage on specific attack moves. In general, faster hitting weapons are better suited at dealing Elemental damage because they make multiple hits in the same time it takes a slower hitting weapon to make one hit.

Excluding Hunting Horn buffs, Elemental Attack buffs from Skills and Food skills are capped at a sum of +20%.

Elemental Crit Skill Adjustment

Weapon Elemental Adjustment
Great Sword +M
Long Sword +L
Sword & Shield +XL
Dual Blades +XL
Hammer +L
Hunting Horn +L
Lance +L
Gunlance +L
Switch Axe +L
Charge Blade +L
Insect Glaive +L
Light Bowgun +XL
Heavy Bowgun +XL
Bow +XL

Projectile Adjustment

Skill/Food Skill Affected Projectiles Adjustment
Normal Up Normal, Rapid +S
Pierce Up Pierce +S
Spread Up Spread Ammo +M
Spread Up Spread Arrow +L

Critical Distance

For Gunner Weapons, Critical Distance (or Critical Range) refers to the distance at which a fired shot deals maximal damage. If the player is in Critical Distance, the aiming reticle will look like this:

[[images/critical_distance_bow_yes) [[images/critical_distance_bowgun_yes)

Generally, being too close or too far away from the target will put the player outside of Critical Distance. Being too close or too far (i.e. outside of Critical Distance) will reduce the damage done by player Projectiles.

Critical Distance does not affect [[Affinity or Critical Hits|damage#critical-hit]].

Rapid Fire Adjustment

The [[Light Bowgun|light-bowgun]] is capable of Rapid Fire, where the LBG shoots multiple shots in a single burst at the cost of 1 ammo. Each individual shot fired from Rapid Fire is weaker than a single shot of the same ammo type, but if most Rapid Fire shots land, their combined damage will exceed the damage done by firing just a single shot.

Rapid Fire Type Adjustment
Lv 1 Normal x5 -M
Lv 2 Normal x3 -M
Lv 2 Normal x4 -L
Lv 1 Pierce x3 -L
Lv 2 Pierce x3 -L
Lv 1 Pellet x3 -M
Lv 2 Pellet x2 -M
Lv 1 Sticky x2 -L
Lv 2 Sticky x3 -L
Lv 1 Sticky x2 -L
Lv 2 Sticky x3 -L
Lv 1 Crag x2 -L
Lv 1 Fire x3 -L
Lv 1 Fire x4 -XL
Lv 1 Water x3 -L
Lv 1 Thunder x3 -L
Lv 1 Ice x3 -L
Lv 1 Dragon x2 -XL
Lv 1 Slicing x2 -S
Lv 2 Slicing x2 -S

Fixed Damage

Fixed damage is dealt directly to the monster and does not have a damage calculation. This means that Fixed damage attacks are not mitigated by the monster's Hitzone values or affected by the player's Attack value.

Some sources of Fixed damage, such as Gunlance shelling and Wyvern Fire, and Bowgun Sticky shot and Crag shot, also deal additional Fire damage. This additional Fire damage will be impacted by damage calculations.

Category Damage Source Damage Dealt
Slinger Stone 1
Slinger Knife 20
Slinger Paralysis Knife 5
Slinger Poison Knife 5
Slinger Sleeping Knife 5
Item Small Barrel Bomb 20
Item Barrel Bomb 80
Item Barrel Bomb G 150
Gunlance Shelling
various other items tbd
Charge Blade Phial Burst - Counter 3
Charge Blade Phial Burst - ED 5
Charge Blade Phial Burst - AED 10
Charge Blade Phial Burst - SAED 25
Bowgun tbd
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