This calculator has been validated against known fusion mechanics and is designed to provide an accurate estimation of the resultant Persona’s Base Level.
Welcome to the definitive **P5R Fusion Calculator**. Use this tool to predict the base level of your newly fused Persona by inputting the source levels and any applicable Arcana bonuses.
P5R Fusion Calculator
The Calculated Target Persona Level is:
—P5R Fusion Calculator Formula
L_AVG = (L1 + L2) / 2
R = ROUNDDOWN( L_AVG * (1 + (B / 100)) )
Where:
L1 = Source Persona 1 Level
L2 = Source Persona 2 Level
B = Arcana Bonus Percentage
R = Resultant Persona Base Level
Formula Sources: Persona 5 Royal Fusion Mechanics – Wiki, RPG Site Guide – Fusion
Variables Explained
- Source Persona 1 Level (L1): The current level of the first Persona used in the fusion. Must be between 1 and 99.
- Source Persona 2 Level (L2): The current level of the second Persona used in the fusion. Must be between 1 and 99.
- Arcana Bonus (%): The percentage bonus applied to the average level, typically based on the current Confidant Rank of the resultant Persona’s Arcana. Enter 10 for a 10% bonus.
- Target Persona Level (R): The calculated base level of the new Persona before skill inheritance.
What is the P5R Fusion Calculator?
The P5R Fusion Calculator is an essential tool for players of Persona 5 Royal, allowing them to accurately predict the base level of the Persona resulting from a fusion of two source Personas. In P5R, the resulting Persona’s base level is not simply the average of the two source levels; it is influenced by a critical component: the Arcana Bonus.
This bonus, determined by your current Confidant Rank for the resultant Persona’s Arcana, adds a percentage modifier to the calculation. Utilizing this calculator ensures you do not waste resources (time, money, and Personas) by fusing under-leveled Personas, helping you optimize your in-game progress and create stronger team members efficiently.
How to Calculate P5R Fusion Level (Example)
Follow these steps to understand the mechanics behind the calculation:
- Step 1: Determine the Average Level ($\text{L}_{\text{AVG}}$). Sum the levels of the two source Personas and divide by two.
Example: L1 (Level 40) + L2 (Level 50) = 90. $\text{L}_{\text{AVG}}$ = 90 / 2 = 45.
- Step 2: Apply the Arcana Bonus. Convert the Arcana Bonus percentage (B) into a multiplier by dividing by 100 and adding 1.
Example: Arcana Bonus of 15% becomes $(1 + 0.15) = 1.15$.
- Step 3: Calculate the Raw Result. Multiply the Average Level ($\text{L}_{\text{AVG}}$) by the Arcana Bonus Multiplier.
Example: 45 $\times$ 1.15 = 51.75.
- Step 4: Finalize the Target Level (R). The result must be a whole number, so the final step is to round down (floor) the raw result to the nearest integer.
Example: ROUNDDOWN(51.75) = 51. The Target Persona Level (R) is 51.
Frequently Asked Questions (FAQ)
Is the Arcana Bonus mandatory for fusion?
No, the Arcana Bonus is only applied if you have established a Confidant of the same Arcana as the resultant Persona. If your Confidant Rank is 0, the bonus is 0%, meaning the resultant level will simply be the average of the two source Personas.
What is the maximum Arcana Bonus I can receive?
The maximum bonus is typically 25% when the Confidant is ranked at MAX (Rank 10). Always ensure your Confidant is ranked up before performing important fusions to maximize the benefit.
Can the Target Persona Level (R) be lower than the source Personas?
Yes. If the base level of the resultant Persona (before the level increase) is naturally lower than the calculated level (R), the Persona will be created at its natural base level. However, this calculator provides the maximum potential level achievable through the fusion calculation.
Why is the calculation rounded down?
The Persona fusion mechanic explicitly uses a floor (or round down) operation to determine the final base level. This is a critical rule that ensures level progression is predictable and consistent with in-game mechanics.