Persona Fusion Calculator
Calculate fusion results for Shin Megami Tensei and Persona games. Determine resulting persona arcana and base level instantly with our accurate fusion formula.
Fusion Parameters
Enter both personas to calculate fusion result
Select both personas and click "Calculate Fusion" to see the fusion result and arcana combination
Fusion Result
Persona Fusion Calculator — Complete Guide
Master the art of persona fusion in Shin Megami Tensei and Persona games with our comprehensive calculator guide. Learn fusion mechanics, arcana combinations, and strategic planning for building powerful demon teams.
The Persona Fusion CalculatorA tool that calculates the resulting persona from combining two personas together is an essential resource for players of Persona 3, Persona 4, Persona 5, and other SMT titles who want to quickly determine fusion results without trial-and-error experimentation. Whether you're exploring fusion mechanics for the first time or planning optimal fusion chains for compendium completion, understanding how persona fusion works transforms you from a casual player into a strategic demon master.
Fusion mechanics represent the core progression system in Persona games. By combining two personas through the Velvet Room's fusion system, you create new personas with higher levels, better stat distributions, and access to powerful skill combinations. The fusion formula determines both the resulting arcana and base level, whilst skill inheritance allows you to customise movesets. Our calculator streamlines these complex calculations, helping you plan fusion strategies, optimise your compendium completion progress, and create the exact personas needed for challenging battles and boss encounters.
How to Use the Persona Fusion Calculator
This comprehensive fusion calculator simplifies the complex process of determining fusion results in Persona and Shin Megami Tensei games. Follow these steps to calculate fusion outcomes accurately and plan your compendium strategies effectively.
Begin by selecting the arcana type for your first persona from the dropdown menu. The 21 major arcana represent different personality archetypes and determine fusion compatibility. Each arcana contains multiple personas at varying levels, from starter personas like Pixie (Lovers) to ultimate personas like Lucifer (Star) and Yoshitsune (Tower).
Strategic Consideration: The arcana selection directly influences your result arcana according to the fusion chart. Same-arcana fusion (combining two Magician personas) produces a different Magician persona, whilst cross-arcana fusion (Magician + Priestess) creates a persona of a different arcana entirely. Popular fusion paths include combining Fool with various arcanas to access rare personas, or using same-arcana fusion to level up favourite personas within a specific arcana line.
Pro Tip: Keep a compendium notebook tracking which arcanas you need for specific fusion recipes. This helps plan efficient fusion chains when targeting high-level personas that require multiple intermediate fusions.
Input the base level of your first persona (1-99). The base level represents the persona's level at creation or summoning from the compendium, not your protagonist's current level. This distinction matters because fusion calculations use persona base levels exclusively, regardless of any levels gained through combat experience before fusion.
Level Strategy: Higher-level personas generally produce higher-level fusion results, but the fusion formula averages both input levels. Combining a level 90 persona with a level 10 persona yields approximately level 51 (90 + 10 / 2 + 1 = 51), demonstrating how fusion balances disparate levels. This mechanic prevents players from immediately accessing endgame personas through single high-level fusion.
Compendium Tip: Register personas at their base level before levelling them up, ensuring you maintain access to lower-level versions for specific fusion recipes that require precise level ranges.
Select your second persona's arcana and input its base level using the same process as the first persona. The calculator treats both personas equally—fusion results remain identical regardless of which persona you designate as "first" or "second," since the formula uses simple addition and averaging without order dependency.
Fusion Planning: Consider persona availability when selecting combinations. Some personas appear exclusively through fusion and cannot be encountered in dungeons, requiring careful planning to access them. Cross-reference fusion results with your compendium to identify missing personas needed for completing arcana collections or accessing advanced fusion recipes.
Advanced Technique: Plan fusion chains by working backwards from your target persona. Identify required arcana combinations, then determine which lower-level personas you need to fuse to reach intermediate steps, creating an efficient path toward your ultimate goal.
Select your game version from Persona 3 / P3 FES, Persona 4 / P4 Golden, or Persona 5 / P5 Royal. Whilst the core fusion formula (average level + 1) remains consistent across all titles, each game features different persona rosters, arcana availability, and special fusion recipes. The calculator adjusts its behaviour based on your selection to provide accurate, game-specific results.
Version Differences: Persona 5 Royal introduced additional personas and altered some fusion combinations compared to vanilla Persona 5. Similarly, Persona 4 Golden expanded the persona roster beyond the original PS2 release. These differences occasionally affect which persona appears at specific fusion levels, though the underlying mathematics remain unchanged.
Special Fusions: Note that special fusions (requiring three or more personas) and unique recipe fusions follow different rules not covered by standard two-persona fusion calculations. Consult game-specific fusion charts for these advanced combinations.
Click "Calculate Fusion" to generate your results. The calculator displays the resulting arcana, base level, average level calculation, and fusion type (same-arcana or cross-arcana). These results show which persona arcana and level range to expect, though the specific persona depends on availability within that arcana at or above the calculated level.
Result Interpretation: If your calculated level is 42 and the result arcana is Temperance, the game selects the first available Temperance persona at level 42 or higher from your compendium. If no exact match exists, it automatically chooses the next higher-level Temperance persona. This skip mechanic explains why fusion sometimes produces higher-level personas than calculated.
Skill Planning: Use these results to prepare for skill inheritance. Plan which skills you want your resulting persona to learn before initiating fusion, as you'll select inherited skills during the fusion process. Prioritise passive abilities, element affinities, and powerful attack spells that complement your playstyle.
Understanding Persona Fusion Mechanics
Persona fusion represents the primary progression system in Atlus's Persona series, combining mathematical formulas with strategic arcana relationships to create increasingly powerful demons for your party.
The Standard Fusion Formula
Result Level Calculation:
Result Level = ⌊(Level₁ + Level₂) / 2⌋ + 1
Where:
- Level₁ = Base level of first persona
- Level₂ = Base level of second persona
- Result Level = Calculated fusion result level
- ⌊ ⌋ = Floor function (round down to nearest integer)
The fusion formula uses straightforward mathematics to determine result levels. First, it adds both input levels together. Second, it divides this sum by two to find the average. Third, it applies the floor function to eliminate decimals by rounding down to the nearest whole number. Finally, it adds one to the floored average, producing your result level.
This "+1" modifier ensures fusion always progresses forward, preventing players from creating personas weaker than their strongest input. Without this modifier, fusing two level 50 personas would yield another level 50, offering no progression incentive. The +1 guarantees advancement whilst maintaining balance through the averaging mechanic that prevents dramatic level jumps from single fusions.
Understanding the Arcana Fusion Chart
The arcana fusion chart maps all possible two-arcana combinations to their resulting arcanas. This predetermined table remains consistent within each game version, though specific combinations may vary between Persona 3, 4, and 5. The chart contains approximately 190 unique pairings covering all possible arcana interactions.
Common Fusion Patterns
| Arcana 1 | Arcana 2 | Result Arcana | Use Case |
|---|---|---|---|
| Fool | Magician | Death | Accessing Death personas early |
| Magician | Priestess | Temperance | Mid-game progression path |
| Empress | Emperor | Priestess | Same-tier arcana combination |
| Hierophant | Lovers | Star | Late-game fusion preparation |
| Chariot | Chariot | Chariot | Same-arcana levelling strategy |
Same-arcana fusion (fusing two personas of identical arcanas) always produces another persona within that same arcana. This mechanic enables targeted levelling within specific arcana lines, useful when strengthening social link-boosted personas or accessing higher-tier versions of favourite demons.
Core Game Mechanics
When calculated fusion levels fall between available personas, the game automatically selects the next higher-level option within the result arcana. If you calculate level 45 but the result arcana's next persona appears at level 48, you'll receive the level 48 version. This skip mechanic rewards strategic fusion planning and compendium management.
During fusion, you select which skills the resulting persona inherits from both parent personas. Most personas can inherit 8 skills maximum, though restrictions apply—certain skill types cannot transfer to incompatible personas. Physical skills won't inherit to magic-focused personas, and unique signature skills remain exclusive to their original demons.
Personas matching your established social link arcanas gain experience bonuses when created through fusion. Higher social link ranks provide larger bonuses, enabling newly-fused personas to start several levels above their base level. This accelerates progression and provides immediate combat viability for fresh personas.
Special fusion recipes require three or more specific personas to create unique, powerful demons unavailable through normal fusion. These recipes ignore standard level calculations and arcana charts, instead following predetermined combinations. Examples include Lucifer, Metatron, and ultimate personas representing specific arcana ultimate forms.
Advanced Fusion Strategies
Fusion Chains: Plan multi-step fusion sequences to reach high-level target personas efficiently. Work backwards from your goal, identifying intermediate personas needed for each step. This reverse-engineering approach minimises wasted fusion attempts and compendium expenditure.
Skill Optimisation: Prioritise inheriting complementary skills that cover elemental weaknesses and provide versatile coverage. Ideal movesets include physical/magical damage, support buffs/debuffs, healing capabilities, and passive abilities enhancing survivability or damage output.
Compendium Efficiency: Register useful intermediate personas in your compendium before fusing them away. This preserves access to specific arcana-level combinations needed for future fusion recipes, preventing the need to recreate intermediate steps through additional fusions.
Social Link Integration: Prioritise fusions matching your highest social link ranks to maximise experience bonuses. A Rank 10 social link can provide +5 or more levels to newly-fused personas, significantly accelerating their combat viability and reducing grinding requirements.
Step-by-Step Fusion Examples
These worked examples demonstrate how fusion calculations produce results across different scenarios, helping you understand the mechanics through practical application.
Cross-Arcana Fusion
Input: Emperor (Lv.15) + Lovers (Lv.20)
Calculation:
- Average: (15 + 20) / 2 = 17.5
- Floor: 17
- Add 1: 17 + 1 = 18
Result: Fortune arcana at Level 18
Explanation: The fusion chart maps Emperor + Lovers to Fortune. The resulting persona will be the first available Fortune at or above level 18.
Same-Arcana Fusion
Input: Chariot (Lv.42) + Chariot (Lv.48)
Calculation:
- Average: (42 + 48) / 2 = 45
- Floor: 45
- Add 1: 45 + 1 = 46
Result: Chariot arcana at Level 46
Explanation: Same-arcana fusion produces a different Chariot persona at the calculated level, useful for accessing higher-tier Chariot demons.
High-Level Fusion
Input: Star (Lv.88) + Moon (Lv.92)
Calculation:
- Average: (88 + 92) / 2 = 90
- Floor: 90
- Add 1: 90 + 1 = 91
Result: Magician arcana at Level 91
Explanation: High-level fusion approaches the level 99 cap, ideal for creating endgame personas with maximum stat potential.
Tips & Best Practices
Fusion Mastery Checklist
Frequently Asked Questions
Persona fusion combines two personas to create a new one through the Velvet Room's fusion system. The resulting persona's level equals the average of both input levels (rounded down) plus one, whilst the arcana is determined by a fusion chart that maps specific arcana combinations to result arcanas. During fusion, you select which skills the new persona inherits from its parent personas, allowing customisation of movesets.
The standard two-persona fusion formula is: Result Level = Floor((Level1 + Level2) / 2) + 1. This formula averages both input levels, rounds down to eliminate decimals using the floor function, then adds one to ensure progression. The resulting arcana depends on the specific combination of input arcanas according to the game's fusion chart, which maps all possible arcana pairings to their results.
No, fusion order does not affect level calculation or resulting arcana. Fusing Magician + Priestess produces identical results to Priestess + Magician because the formula uses simple addition and averaging without order dependency. However, in certain game versions, skill inheritance order may vary slightly depending on which persona appears first, though this represents a minor interface difference rather than a mechanical distinction.
Special personas requiring unique fusion recipes (three or more specific personas) follow different rules than standard two-persona fusion. These special fusions ignore normal level calculations and arcana charts, instead producing predetermined results based on exact persona combinations. Examples include ultimate personas like Lucifer, Metatron, and Yoshitsune, which require specific multi-persona recipes detailed in game-specific fusion guides.
Social links provide experience bonuses to fused personas matching their arcana. Higher social link ranks grant larger bonuses, potentially adding 5+ levels to newly-created personas at maximum rank. This accelerates persona viability by starting them well above their base fusion level, reducing grinding requirements. Additionally, some personas become available only after establishing specific social link ranks, gating access to powerful demons behind story progression.
Fusing two level 99 personas would mathematically produce level 100 ((99 + 99) / 2 + 1 = 100), but the game caps all persona levels at 99. Therefore, the result appears as a level 99 persona of the determined arcana. This cap prevents level overflow whilst maintaining fusion system integrity, though it eliminates progression incentive when fusing maximum-level demons.
Compendium completion requires systematic fusion planning. Work through each arcana sequentially, fusing personas in level order to unlock progressively higher-tier demons. Register every new persona immediately upon creation—this preserves access to intermediate fusions needed for complex recipes. Cross-reference fusion results with compendium gaps to identify missing personas, then plan efficient fusion chains reaching those specific arcana-level combinations. Special fusions typically require near-complete compendium progression before attempting ultimate personas.
Most DLC personas cannot participate in fusion as material—they're fusion-locked, preventing their use in creating other personas. This restriction prevents DLC purchases from trivialising progression by enabling immediate access to powerful fusion results. However, DLC personas can still be used in combat and benefit from skill cards, maintaining their utility whilst preserving game balance. Always verify fusion capability before purchasing DLC personas if you intended to use them as fusion materials.
Start Planning Your Fusions Today
Use our free Persona Fusion Calculator to calculate fusion results, plan compendium strategies, and master demon fusion mechanics.
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