Persona Damage Calculator

Persona 5 and Persona 5 Royal feature a layered damage system where every attack's final output depends on your character's stats, your Persona's base power, the skill being used, and a series of multiplicative modifiers. Whether you're unleashing a physical Lunge or a magical Agidyne, the engine works the same way: base attack power is scaled by your relevant stat, adjusted by active buffs or debuffs, reduced by the enemy's defense, and then multiplied by situational bonuses like critical hits, technical damage, and elemental weakness.

Physical skills scale with your character's Strength stat and the equipped weapon's attack power, while magic skills scale with the Magic stat and your Persona's magic attack rating. This distinction makes build planning crucial — a Strength-focused Joker will always prefer physical-type skills, while a Magic-heavy setup maximizes elemental and almighty spell output.

Understanding the full damage pipeline is essential for high-level optimization in Mementos, Palaces, and boss fights. A single well-timed Tarukaja stack can shift a near-miss into a kill, and knowing when to apply Rakunda versus saving SP for attacks can define an entire dungeon run. This Persona damage calculator replicates the actual in-game formula so you can plan your loadout with confidence before every major encounter.

The Persona 5 damage formula has two distinct phases: an attack calculation phase and a modifier application phase. Both phases must be understood to predict your damage output accurately.

In the attack phase, your base attack (weapon for physical, Persona magic attack for spells) is multiplied by a stat scaling factor derived from Strength or Magic. Tarukaja buff stacks and the Charge or Concentrate skill then multiply this value further before the skill's power percentage is applied.

In the modifier phase, enemy defense (computed as Endurance × 2, reduced by Rakunda) is subtracted from the skill damage. The result is floored at 1 so attacks always deal at least 1 point of damage. Finally, critical hits, technical bonuses, elemental weakness, and elemental resistance are applied as sequential multipliers to this net value.

The final damage has a ±5% variance range, so the expected damage is the center point and actual hits will land between 95% and 105% of that value.

The buff and debuff system in Persona 5 is one of the most impactful mechanics available to players. Tarukaja raises your party's attack power in increments, stacking up to three times. Each stack applies a fixed multiplier: one stack gives ×1.25, two stacks give ×1.50, and three stacks give ×1.75. These multipliers are applied to the attack value before Charge or Concentrate, which means stacking all three Tarukaja and then activating Charge results in a combined attack multiplier of 1.75 × 2.5 = 4.375 — more than quadrupling your raw attack.

On the defensive side, Rakunda weakens the enemy's defense. It also stacks three times with diminishing defense values: one stack reduces enemy defense to 75% of its base, two stacks reduce it to 50%, and three stacks bring it down to just 25%. Since enemy defense is computed as Endurance × 2, a fully Rakunda-debuffed enemy with 40 Endurance would have an effective defense of only 40 × 2 × 0.25 = 20, compared to the base 80 — a massive reduction that makes even moderate skill power deal significant damage.

Using both Tarukaja at maximum stacks and Rakunda at maximum stacks simultaneously is the single most reliable way to dramatically increase your DPS. In boss fights, dedicating the first turn to stacking buffs and debuffs before attacking is almost always the optimal strategy, especially when Charge or Concentrate can follow on the next turn.

Note that Matarukaja (party-wide Tarukaja) and Marakunda (party-wide Rakunda) apply the same multipliers as their single-target counterparts. These group versions are especially valuable in longer boss encounters where multiple party members are attacking.

Technical hits are a unique damage bonus that occurs when you exploit the interaction between a specific status condition on an enemy and a compatible attack type. Landing a Technical does not consume an extra turn the way a weakness hit does, but it deals significantly increased damage — making Technicals an excellent option against enemies that have no elemental weaknesses.

In the original Persona 5, a Technical hit applies a ×1.2 damage multiplier (20% bonus). In Persona 5 Royal, this was improved to ×1.4 (40% bonus), making Technical setups considerably more rewarding in the updated version of the game. This calculator automatically applies the correct multiplier based on which game you select.

The most commonly used Technical combos are:

• Freeze (Ice ailment) + Physical or Nuclear attacks
• Shock (Electric ailment) + Physical or Nuclear attacks
• Burn (Fire ailment) + Wind or Nuclear attacks
• Dizzy + any attack type (universal Technical trigger)
• Mental status effects (Fear, Despair, Rage, Brainwash, Sleep, Forget) + Psychic attacks (P5R exclusive)

The Dizzy status is particularly powerful because it enables Technicals from any attack type, making it the most flexible setup option for parties without dedicated elemental coverage. Inflicting Dizzy with Dizzying Blow and then following up with any skill class triggers the Technical bonus reliably.

The One More mechanic is Persona 5's core combat reward system: whenever you land a critical hit or strike an enemy's elemental weakness, you earn an additional action in the same turn. This calculator indicates whether your current configuration triggers One More by checking whether the weakness flag or critical hit flag is active.

Chaining multiple One More turns through different party members using Baton Pass is the primary route to devastating burst damage. Each Baton Pass in a chain can also provide a cumulative damage bonus to the next attacker, further amplifying already-boosted attack values. The ideal sequence for a boss fight is to buff with Tarukaja and debuff with Rakunda on the first turn, then land a weakness hit or critical with a Charged skill to trigger One More, Baton Pass to the party member with the highest relevant damage output, and continue the chain as long as party members can contribute.

Understanding which skills will realistically trigger One More — and planning your skill selection and stat allocation around those triggers — is one of the clearest dividing lines between casual and optimized Persona 5 play. Use this calculator to test whether a given loadout hits hard enough on a weakness to justify the SP cost or whether stacking more Tarukaja first would yield a more reliable kill threshold.

SP is a finite and precious resource across Palaces and Mementos, meaning damage output cannot be evaluated in isolation — the cost per use matters just as much as peak power. This calculator estimates SP cost as Math.ceil(SkillPower / 10), a value that reflects the general game tendency for stronger skills to cost proportionally more SP. Dividing expected damage by estimated SP cost gives you a damage-per-SP ratio that helps you compare skill options objectively.

For long dungeon crawls, skills with moderate Skill Power ratings often outperform high-power spells when measured by damage per SP. Agidyne (150%+ power, high SP cost) may deal more damage per hit than Agi (50% power, low SP cost), but the latter's superior efficiency means you can sustain far more attacks before needing to rest or consume items. The optimal strategy varies: save high-SP skills for boss fights and critical shadow encounters, and use efficient lower-power skills for standard shadows to preserve resources.

The damage-per-SP metric displayed by this calculator is a useful proxy for evaluating skill builds during early and mid-game Palace runs where SP restoration is limited. In late-game scenarios with better accessories and SP Adhesive items, the calculus shifts and raw damage output per attack becomes more important than efficiency.