Persona 5 Fusion Calculator
Predict the outcome of your Velvet Room fusions with mathematical precision.
Formula: Result Level = ((Lvl 1 + Lvl 2) / 2) + 0.5. The final Persona will be the lowest base-level Persona of the resulting Arcana that is equal to or higher than this value.
Fusion Level Projection
Visual representation of the average level vs. resulting level required for the target Persona.
What is Persona 5 Fusion Calculator?
The Persona 5 Fusion Calculator is an essential tool for any Phantom Thief looking to optimize their roster in Persona 5 and Persona 5 Royal. Fusion is the core mechanic of the Velvet Room, where Igor and his assistants allow you to combine two or more Personas to create a more powerful one. Using a Persona 5 Fusion Calculator ensures you don't waste valuable resources or accidentally fuse away a high-stat demon for a weaker result.
Whether you are playing the original version or the Royal edition, understanding the mathematical outcomes of fusion allows you to plan your compendium completion. Players who use a Persona 5 Fusion Calculator can identify exactly which Arcanas yield specific results, helping them unlock ultimate Personas like Satanael or Yoshitsune more efficiently.
Common misconceptions include thinking that a higher-level ingredient always results in a higher-level output. In reality, the Persona 5 Fusion Calculator shows that the "Base Level" of the resulting Persona is determined by a specific average formula, not just the raw level of your current party members.
Persona 5 Fusion Calculator Formula and Mathematical Explanation
The math behind the Persona 5 Fusion Calculator is consistent across the series but has specific nuances in the fifth installment. The primary formula used for a basic "Normal Fusion" (two ingredients) is as follows:
Resulting Base Level = [(Level of Persona A + Level of Persona B) / 2] + 0.5
After calculating this value, the game looks at the "Resulting Arcana" (determined by the combination of the two input Arcanas) and selects the Persona with the lowest base level that is *greater than or equal* to the calculated Resulting Base Level.
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Persona A Lvl | Current level of the first ingredient | Integer | 1 – 99 |
| Persona B Lvl | Current level of the second ingredient | Integer | 1 – 99 |
| Arcana Link | The social link category of the Persona | String | Fool to Faith |
| Fusion Modifier | Constant added to the average | Float | +0.5 |
Practical Examples (Real-World Use Cases)
Example 1: Early Game Fusion
Suppose you use the Persona 5 Fusion Calculator with a Level 5 Pixie (Lovers) and a Level 10 Berith (Hierophant). The average level is 7.5. Adding the 0.5 modifier gives you 8.0. If the combination of Lovers and Hierophant results in the Magician Arcana, the game will grant you the Magician Persona that is at or above Level 8 (likely Jack-o'-Lantern if it were higher level, or the next tier up).
Example 2: High-Level Optimization
If you are trying to fuse a specific Level 80 Persona, you must ensure the average level of your ingredients, plus the modifier, does not exceed the level of the *next* Persona in that Arcana chain. Using the Persona 5 Fusion Calculator prevents you from over-leveling ingredients and missing your target.
How to Use This Persona 5 Fusion Calculator
- Enter Current Levels: Input the exact levels of the two Personas you currently hold in your inventory into the Persona 5 Fusion Calculator.
- Select Arcanas: Choose the Arcana for both Personas. This is crucial because the Arcana determines the pool of potential results.
- Review the Resulting Level: Check the "Main Result" to see the minimum level your target Persona must have.
- Check the Chart: Use the dynamic chart to visualize how increasing your ingredient levels affects the outcome.
- Consult the Compendium: Match the calculated level with your in-game compendium to see the specific name of the Persona you will receive.
Key Factors That Affect Persona 5 Fusion Calculator Results
- Treasure Demon Fusion: Treasure Demons do not follow the standard formula. They shift a Persona up or down within its own Arcana based on specific level tiers.
- DLC Personas: If you have DLC installed, the Persona 5 Fusion Calculator results change because new Personas are inserted into the level hierarchy, often shifting standard recipes.
- Special Fusions: Triple fusions (Group Guillotine) and advanced fusions do not use this formula; they have fixed recipes.
- Confidant Rank: While the confidant rank doesn't change the base result, the XP burst can make the *resulting* Persona much higher level than the calculation suggests.
- Arcana Combination Table: Every pair of Arcanas has a fixed result Arcana (e.g., Fool + Magician = Death).
- Game Version: Persona 5 Royal adds the Faith and Councillor Arcanas, which alters the Persona 5 Fusion Calculator logic compared to the base game.
Frequently Asked Questions (FAQ)
Yes, the mathematical formula for base level calculation remains the same, though the Arcana result table includes new Arcanas like Faith and Councillor.
Check if you have DLC Personas enabled. DLC Personas insert themselves into the level hierarchy, which can shift the results of a Persona 5 Fusion Calculator.
No, stats do not affect the identity of the resulting Persona, only its starting power. The Persona 5 Fusion Calculator only considers Level and Arcana.
The 0.5 is a mathematical tie-breaker used by the game engine to ensure that the result always rounds up to the next available Persona tier.
Yes, fusing two Personas of the same Arcana usually results in a Persona of that same Arcana, but of a lower level tier (a "down-fusion").
Use the Persona 5 Fusion Calculator to find the path to high-level Arcanas and then use the Network Fusion or Advanced Fusion options in the Velvet Room.
You cannot fuse a Persona that is a higher level than the Protagonist unless you have the Strength Confidant's "Special Treatment" ability.
Occasional "Fusion Alarms" in Royal can cause accidents, leading to unexpected results not predictable by a standard Persona 5 Fusion Calculator.
Related Tools and Internal Resources
- Persona 5 Royal Complete Strategy Guide – Learn all the secrets of the Phantom Thieves.
- Arcana Fusion Chart – A full grid of Arcana combinations used in the Persona 5 Fusion Calculator.
- Best Personas for Every Palace – A guide on which fusions to prioritize.
- Persona Stats and Growth Guide – Understand how levels turn into power.
- Velvet Room Mechanics Explained – Deep dive into executions, fusions, and alarms.
- Complete Skills & Passives List – Find out which skills your Persona 5 Fusion Calculator results will inherit.