Persona 5 Fusion Calculator

Optimize your Velvet Room fusions by predicting the resulting Persona level, fusion costs, and Social Link XP bonuses for Persona 5 and Persona 5 Royal.

What is the Persona 5 Fusion Calculator?

The persona 5 fusion calculator is an essential tool for players navigating the complex Velvet Room mechanics in Persona 5 and Persona 5 Royal. Fusion is the process of combining two or more Personas to create a new, more powerful entity. Using a persona 5 fusion calculator allows players to predict the exact outcome of these combinations without wasting precious in-game Yen or Personas.

Who should use it? Any player aiming to complete their Compendium, create “ultimate” builds for Joker, or strategically manage their resources during a palace run. A common misconception is that fusion results are random. In reality, fusion follows strict mathematical rules based on Arcana combinations and the base levels of the ingredients used in the persona 5 fusion calculator.

Persona 5 Fusion Calculator Formula and Mathematical Explanation

The core logic behind a standard dyadic (two-persona) fusion involves two primary steps: determining the resulting Arcana and calculating the target base level. The persona 5 fusion calculator uses the following derivation:

Formula: Result Level = [(Base Level A + Base Level B) / 2] + 1

Once the result level is found, the game looks at the Resulting Arcana (determined by a fixed internal table) and selects the Persona whose base level is the smallest value greater than or equal to the Result Level.

Variable	Meaning	Unit	Typical Range
Base Level A	Initial level of first Persona	Level (Lv)	1 – 99
Base Level B	Initial level of second Persona	Level (Lv)	1 – 99
Arcana Rank	Social Link / Confidant level	Rank	0 – 10
Fusion Cost	Yen required for summoning	Yen (¥)	2,000 – 500,000+

Practical Examples (Real-World Use Cases)

Example 1: Early Game Fusion
Suppose you fuse a Level 5 Pixie (Lovers) and a Level 9 Berith (Hierophant). The persona 5 fusion calculator performs: (5 + 9) / 2 + 1 = 8. The resulting Arcana for Lovers x Hierophant is Moon. The calculator identifies the lowest level Moon Persona that is Level 8 or higher (likely Succubus at Lv 7, but since we need ≥ 8, it might move to the next tier).

Example 2: High-Level Optimization
A player wants to fuse two high-level Personas (Lv 80 and Lv 85). The persona 5 fusion calculator predicts a target level of 83.5. If the player has a Rank 10 Confidant for that Arcana, the resulting Persona will immediately gain several levels, often surpassing the ingredient levels instantly.

How to Use This Persona 5 Fusion Calculator

1. Enter Ingredient Levels: Input the base levels of the two Personas you intend to fuse into the persona 5 fusion calculator.
2. Select Confidant Rank: Choose the current rank of the Confidant associated with the resulting Persona’s Arcana.
3. Analyze Results: View the predicted base level and the estimated Yen cost for summoning these Personas from the Compendium.
4. Check the Chart: Use the visual SVG chart to see how your ingredients scale relative to the result.

Key Factors That Affect Persona 5 Fusion Calculator Results

• Arcana Combination: Every pairing has a fixed result. Fool + Magician will always result in Death in standard fusion.
• Base Level vs. Current Level: The persona 5 fusion calculator relies on Base Levels (the level the Persona starts at), not the level you have grinded it to.
• Treasure Demon Exceptions: Fusing with Treasure Demons follows different rules, often jumping levels up or down within the same Arcana.
• Fusion Accidents: There is a small random chance the persona 5 fusion calculator prediction will be ignored due to a Velvet Room error.
• DLC Personas: Owning DLC Personas changes the level tiers, often shifting fusion results significantly.
• Arcana Burst: High Confidant ranks provide massive XP bonuses, which the persona 5 fusion calculator accounts for in its “XP Bonus” estimation.

Frequently Asked Questions (FAQ)

Does the calculator work for P5 Royal?	Yes, the persona 5 fusion calculator logic remains consistent, though DLC Personas in Royal can alter specific outcomes.
Why is my result different in-game?	You might be using the Persona’s current level instead of its base level, or you may own DLC that shifts the tiers.
What is the “Public Execution”?	This is a network fusion feature that yields random results, which cannot be predicted by a standard persona 5 fusion calculator.
How do I lower a Persona’s level via fusion?	Using specific Treasure Demons can down-rank a Persona within its own Arcana.
Does the Social Link rank affect the result Persona?	Only the XP it gains after fusion, not the identity of the Persona itself.
What are Triple Fusions?	Advanced fusions using 3+ Personas. These require a specialized persona 5 fusion calculator for specific recipes.
Are fusion results the same every day?	Yes, unless a “Fusion Alarm” is active in Persona 5 Royal, which increases accident rates.
Can I fuse Personas of a higher level than Joker?	Not normally, unless you have the Strength Confidant Rank 5 (P5R) or Rank 10 (P5) “Special Treatment” ability.

Related Tools and Internal Resources

• P5 Royal Social Link Guide: Maximize your Arcana Bursts by leveling confidants efficiently.
• Persona 5 Mementos Guide: Best places to farm Yen for expensive fusions.
• Best Personas List: Discover which results to aim for in your persona 5 fusion calculator.
• Velvet Room Mechanics: Deep dive into the lore and rules of the guillotine.
• Confidant Bonuses: A full list of perks for every social link.
• Persona 5 Best Skills: Learn which skills to inherit during the fusion process.