Shin Megami Tensei 3 Fusion Calculator

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Reviewed by David Chen — Gaming Mechanics & RPG Systems Specialist

Optimize your party in Shin Megami Tensei III: Nocturne with our precise fusion calculator. This tool helps you predict the resulting Demon’s base level and race by calculating the fusion arithmetic used in the game’s Cathedral of Shadows.

Shin Megami Tensei 3 Fusion Calculator

Predicted Result Level:
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Shin Megami Tensei 3 Fusion Calculator Formula:

Result Level = ⌊(Lvl₁ + Lvl₂) / 2⌋ + 1

Source: Megami Tensei Wiki – Fusion Mechanics

Variables:

  • Demon 1/2 Race: The taxonomic classification of the fusion components which determines the resulting race.
  • Base Level: The starting level of the demon in the Compendium (not its current level after grinding).
  • Result Level: The minimum level the target demon must have for the fusion to be successful.

Related Calculators:

What is Shin Megami Tensei 3 Fusion Calculator?

A Shin Megami Tensei 3 fusion calculator is a specialized tool designed for players of Shin Megami Tensei III: Nocturne. Fusion is the core mechanic of the game, allowing players to combine two or more demons to create a stronger ally.

Because the game follows strict mathematical rules for determining the outcome, calculating the “target level” is essential to avoid wasting high-level ingredients on low-level results. The calculator automates the math of averaging levels and adding the +1 offset required for standard fusions.

How to Calculate SMT 3 Fusion (Example):

  1. Identify the Base Levels of your two demons (e.g., Pixie Lvl 2 and Angel Lvl 11).
  2. Add the two levels together: 2 + 11 = 13.
  3. Divide the sum by 2: 13 / 2 = 6.5.
  4. Round down (Floor): 6.
  5. Add 1 to the result: 6 + 1 = 7.
  6. The resulting demon will be the lowest level demon of the target race that is Level 7 or higher.

Frequently Asked Questions (FAQ):

Does current level affect fusion? No, SMT3 uses the demon’s *base* level for fusion calculations, not the level it reached through experience points.

What is a Cursed Fusion? Cursed fusions occur when one demon is an “Element” and the other is a specific race, often resulting in a lower-tier demon of the same race.

Can I fuse Fiends? Fiends require special conditions, such as specific Kagutsuchi phases and possessing a “Deathstone.”

What is the result of fusing two of the same race? Fusing two demons of the same race usually results in an “Element” demon (e.g., Erthys, Flaemis).