First of all, I'd like to thank the community for figuring the damage calculations out. I'm creating this topic for the inevitable day in which this comes to GMS.

Damage Formulas for Post-1.2.318 KMST

If you don't want to see any of the specifics for calculations, just jump to the third spoiler.

Defining the equation

Maximum Damage

All damage formulas are derived from the same basic equation, as follows:

MAX DAMAGE = MULTIPLIER * (4 * PRIMARY STAT + SECONDARY STAT) * (ATTACK / 100)

Primary Stat --The primary stat is determined by the weapon you are using, and it's about what you'd expect. Swords, axes, blunt weapons, polearms, knucklers, and spears all use STR for primary. Wands and staves use INT for primary. Claws and daggers use LUK for primary, and all other weapons use DEX.

Secondary Stat --The secondary stat is also similar to how it is currently. Swords, axes, blunt weapons, knucklers, polearms and spears all use DEX for secondary. Wands and staves use LUK. Claws use DEX. Daggers use DEX + STR, and bows and crossbows use STR.

Attack --"ATTACK" here signifies either magic attack or weapon attack. Note that in this new system 1 INT no longer gives 1 Magic Attack. Meditate's magic attack is just as good as a Fighter's Rage.

Multiplier --The "MULTIPLIER" is determined by the weapon used:

Multipliers from KMST 1.2.318 - 1.2.326

Weapon Type Multiplier 1H Sword 1.10 1H Axe 1.10 1H BW 1.10 Dagger 1.30 Wand 0.88 Staff 0.88 2H Sword 1.29 2H Axe 1.27 2H BW 1.27 Spear 1.49 Polearm 1.49 Bow 1.15 Crossbow 1.35 Claw 2.00 Knuckler 1.70 Gun 1.60 Multipliers from KMST 1.2.327++

Credit to iAmFear and Baklava for these values

Weapon Type Multiplier 1H Sword 1.20 1H Axe 1.20 1H BW 1.20 Dagger 1.30 Wand 1.00 Staff 1.00 2H Sword 1.32 2H Axe 1.32 2H BW 1.32 Spear 1.49 Polearm 1.49 Bow 1.20 Crossbow 1.35 Claw 1.75 Knuckler 1.70 Gun 1.50

Minimum Damage

MIN DAMAGE = MAX DAMAGE * TOTAL MASTERY

TOTAL MASTERY = BASE MASTERY + WEAPON MASTERY

Weapon Type Base Mastery Included Weapons Ranged 15% Bows, Crossbows, Claws, Guns Melee 20% Swords, Axes, Blunt Weapons, Spears, Polearms, Knucklers Magic 25% Staves, Wands

Weapon Mastery --This is obtained during second job, and gives you 50% weapon mastery when maxed.

As an example, if you're a Night Lord using a claw with all points in mastery, you would have 65% mastery (15% base mastery + 50% weapon mastery)

Using the equation

Procedure

MULTIPLIER * (4 * PRIMARY STAT + SECONDARY STAT) * (ATTACK / 100)

1. Determine the weapon you'll be using.

2. Insert your values for your primary stat, secondary stat, and attack.

3. Look up your multiplier (given in first spoiler) and insert that into the equation

4. Perform the calculation

5. Round to the nearest whole number. This is your maximum damage.

6. Determine your total mastery (also in first spoiler)

7. Multiply your total mastery with the maximum damage.

8. Round to the nearest whole number. This is your minimum damage.

Example

1H Sword Hero

600 STR, 100 DEX

100 Weapon Attack

Maxed 2nd job mastery

1. Determine the weapon you'll be using:

-1H Sword, primary stat is STR, and secondary is DEX

2. Insert your values for your primary stat, secondary stat, and attack.

-MULTIPLIER * (4 * 600 + 100) * (100 / 100)

3. Look up your multiplier (given in first spoiler) and insert that into the equation

- It's 1.1, so:1.1 * (4 * 600 + 100) * (100 / 100)

4. Perform the calculation

1.1 * (4 * 600 + 100) * (100 / 100) <-- remove 100/100, multiplying by 1

1.1 * (4 * 600 + 100) <-- Finish parenthesis

1.1 * 2500 <-- Finish multiplication

2750

5. Round to the nearest whole number. This is your maximum damage.

-2750 doesn't need to be rounded as it's a whole number

6. Determine your total mastery (also in first spoiler)

-I'm melee, so that's 20% base mastery. I also maxed Mastery in second job. So Total Mastery = 20% + 50% = 70%

7. Multiply your total mastery with the maximum damage.

-2750 * 0.7 = 1925

8. Round to the nearest whole number. This is your minimum damage.

-1925 doesn't need to be rounded as it's a whole number

My damage range is 1925 ~ 2750

Damage Formula Cheat Sheet

Weapon Type Base Mastery Max Damage Formula 1H Sword 20% 1.20*(4 * STR + DEX) * (Weapon Attack / 100) 1H Axe 20% 1.20*(4 * STR + DEX) * (Weapon Attack / 100) 1H BW 20% 1.20*(4 * STR + DEX) * (Weapon Attack / 100) Dagger 20% 1.30*(4 * LUK + STR + DEX) * (Weapon Attack / 100) Wand 25% 1.00*(4 * INT + LUK) * (Magic Attack / 100) Staff 25% 1.00*(4 * INT + LUK) * (Magic Attack / 100) 2H Sword 20% 1.32*(4 * STR + DEX) * (Weapon Attack / 100) 2H Axe 20% 1.32*(4 * STR + DEX) * (Weapon Attack / 100) 2H BW 20% 1.32*(4 * STR + DEX) * (Weapon Attack / 100) Spear 20% 1.49*(4 * STR + DEX) * (Weapon Attack / 100) Polearm 20% 1.49*(4 * STR + DEX) * (Weapon Attack / 100) Bow 15% 1.20*(4 * DEX + STR) * (Weapon Attack / 100) Crossbow 15% 1.35*(4 * DEX + STR) * (Weapon Attack / 100) Claw 15% 1.75*(4 * LUK + DEX) * (Weapon Attack / 100) Knuckler 20% 1.70*(4 * STR + DEX) * (Weapon Attack / 100) Gun 15% 1.50*(4 * DEX + STR) * (Weapon Attack / 100)

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