Damage Calculator — P5X damage estimation tool
Formula read straight from the official the game's own data — every input clamped, no fabricated numbers
This tool estimates single-hit damage in P5X using the official defense-mitigation formula (read from the game's own data: damage equals the greater of a 12% Attack floor and a soft formula Attack×1000/(1000+Defense)×90%), plus the critical hit formula (rate clamped 5%-95%, multiplier clamped x1.6-x3.0). Every input field is clamped to a real cap; malformed input is rejected instead of producing a misleading number.
The formula is read straight from the official damage-formula data in the game (4083 official formulas) — the full per-character breakdown is calculated live from this raw data instead of a fixed lookup table.
How to use
Enter Attack (ATK) and target Defense (DEF), pick a skill element and level (the % field auto-fills from the data's standard level curve — edit it if you know the exact % of the skill you're using), then add any damage bonus/reduction and crit stats. The tool returns 3 numbers: normal damage, critical damage, and expected (probability-weighted average) damage.
Some values from this link were out of range and have been adjusted to the tool's valid limits (shown in the fields above).
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Result
The tool remembers your last input on this device (localStorage).
This tool uses a formula read from the official data, but the original variable names (GJa, FYb, BJa...) come with no official documentation — the page discloses this inference openly; treat it as a reference estimate, not 100% official developer data.