Damage in the game is calculated as follows:

DAMAGE = [(eATK + (pATK x R x T)) x SOS x EFF% x D - DEF] x (2-RES%) x P

Note that this formula is used for both the player and noise.

• eATK: Equipped attack: Character/noise base ATK plus/minus thread modifiers. (Maximum possible for Neku is 246 [100+35 {Your Cap}+30 {Pi-Face's Jeans}+28 {Maid Costume}+53 {Samurai Sword}] but this is inferior when compared against SOS setups. Maximum possible for partners is 255 because of the nine ATK stickers.)
• pATK: Pin attack: Attack value of the pin. (Neku only)
• R: Resonance multiplier. If the attack is under the effect of Resonance, this value is 1.2, otherwise it's 1.0.
• T: Trend multiplier for brands:
  • Most popular: 2.0
  • No. 2 brand: 1.5
  • No. 3 brand: 1.2
  • Least popular: 0.5
  • Unranked: 1.0
• SOS: SOS multiplier. Default (no SOS) is 1.0, maximum is 2.7.
• EFF%: Efficiency multiplier. This can range from 0.2 to 4.0.
• D: Difficulty multiplier:
  • Easy: 2.00
  • Normal: 1.00
  • Hard: 0.61
  • Ultimate: 0.40
• DEF: Character/noise DEF. This is 0 for most noise, but some noise have a hidden DEF value.
• RES%: Resistance multiplier. For noise, this is the percentage value listed in the noise report. If RES% is listed as 200%, then substitute 3.00 instead. For characters, this is 100% (1.0) for Neku and partners facing the enemy. It is 50% (0.5) for partners attacked from behind or Joshua while airborne.
• P: Puck multiplier. If attacking taboo noise without the puck, this is 0.25. If the attack is not amplified by the puck, this is 1.0. Default start value is 2.0, maximum is 5.0.