Shin Megami Tensei 5 Fusion Calculator – Predict Demon Fusions & Levels


Shin Megami Tensei 5 Fusion Calculator

Unlock the secrets of demon fusion in Shin Megami Tensei V with our advanced Shin Megami Tensei 5 Fusion Calculator. Whether you’re aiming for a specific demon, optimizing your party, or just curious about potential outcomes, this tool provides accurate predictions for resulting demon races and level ranges based on your parent demons. Master the art of demon creation and dominate the Da’at!

SMT5 Fusion Predictor



Enter the current level of your first parent demon (1-99).



Select the race of your first parent demon.


Enter the current level of your second parent demon (1-99).



Select the race of your second parent demon.


Fusion Prediction Results

Predicted Result: N/A

Average Parent Level: 0

Base Fusion Level: 0

Level Range Modifier: +/- 0

Potential Lowest Level: 0

Potential Highest Level: 0

Formula Explanation: The resulting demon’s race is determined by a fixed fusion chart based on the parent demon races. The base level is typically the average of the parent demons’ levels, adjusted by a small modifier to determine a potential level range. The actual demon created will be the lowest-level demon of the resulting race that is at or above this calculated base level, within the predicted range.

Simplified SMT5 Race Fusion Chart
Parent A \ Parent B Divine Fairy Beast Foul Vile Night Jirae
Divine Holy Holy Holy Vile Foul Foul Megami
Fairy Holy Yoma Vile Night Night Foul Brute
Beast Holy Vile Brute Vile Foul Foul Jirae
Foul Vile Night Vile Vile Tyrant Vile Vile
Vile Foul Night Foul Tyrant Foul Foul Foul
Night Foul Foul Foul Vile Foul Foul Foul
Jirae Megami Brute Brute Vile Foul Foul Brute
Predicted Level Distribution Likelihood

What is a Shin Megami Tensei 5 Fusion Calculator?

A Shin Megami Tensei 5 Fusion Calculator is an essential tool for players navigating the complex demon fusion system in Atlus’s acclaimed RPG, Shin Megami Tensei V. In SMT5, players can combine two or more demons to create a new, often more powerful, demon. This process is central to character progression, party customization, and strategy. A fusion calculator helps players predict the outcome of these fusions, including the resulting demon’s race and a potential level range, saving countless hours of trial-and-error.

Who should use it? Any SMT5 player looking to optimize their demon roster, plan for specific demon acquisitions, or simply understand the intricate fusion mechanics will find this calculator invaluable. From beginners struggling with early-game fusions to veterans aiming for endgame builds, the SMT5 Fusion Calculator streamlines the process of demon creation.

Common misconceptions: Many believe fusion is purely random or that higher-level parents always yield significantly higher-level results. While there’s an element of randomness (fusion accidents), the core mechanics of race combination and level calculation follow strict rules. Another misconception is that all skills are inherited; skill inheritance is selective and requires careful planning, which a calculator helps facilitate by showing the base demon.

Shin Megami Tensei 5 Fusion Calculator Formula and Mathematical Explanation

The core of the Shin Megami Tensei 5 Fusion Calculator lies in two primary calculations: determining the resulting demon’s race and its potential level. While SMT5’s internal mechanics are incredibly deep, our calculator simplifies the core logic to provide actionable predictions.

Step-by-Step Derivation:

  1. Determine Resulting Race: The races of the two parent demons are cross-referenced against a predefined fusion chart. This chart dictates which new race will be formed from any given combination of two races. For example, a “Divine” demon fused with a “Beast” demon might consistently result in a “Holy” demon. This is a lookup operation, not a mathematical formula.
  2. Calculate Average Parent Level: The levels of Parent Demon A (LA) and Parent Demon B (LB) are averaged.

    Average Level (LAvg) = (LA + LB) / 2
  3. Determine Base Fusion Level: The LAvg is typically rounded down to the nearest whole number. This forms the initial target level for the resulting demon.

    Base Fusion Level (LBase) = Floor(LAvg)
  4. Apply Level Range Modifier: To account for the slight variations and the game’s internal logic of finding the “next available” demon, a conceptual level range modifier (M) is applied. This modifier creates a window around the LBase. For this calculator, we use a simplified fixed modifier.

    Potential Lowest Level = LBase - M

    Potential Highest Level = LBase + M
  5. Identify Actual Demon: In the actual game, the system then searches for the lowest-level demon of the Resulting Race whose base level is greater than or equal to LBase (and within the calculated range). Our calculator provides the range as a prediction, as a full demon compendium isn’t embedded.

Variable Explanations:

Key Variables in SMT5 Fusion Calculation
Variable Meaning Unit Typical Range
LA Level of Parent Demon A Level 1 – 99
LB Level of Parent Demon B Level 1 – 99
RaceA Race of Parent Demon A N/A ~20-30 unique races
RaceB Race of Parent Demon B N/A ~20-30 unique races
LAvg Average Level of Parent Demons Level 1 – 99
LBase Base Fusion Level (rounded average) Level 1 – 99
M Level Range Modifier (conceptual) Level +/- 5 to 10

Practical Examples (Real-World Use Cases)

Let’s walk through a couple of examples to illustrate how the Shin Megami Tensei 5 Fusion Calculator works and how to interpret its results.

Example 1: Early Game Progression

  • Goal: Fuse a stronger demon for early-game combat.
  • Parent Demon A: Pixie (Fairy, Level 10)
  • Parent Demon B: Kodama (Jirae, Level 12)
  • Calculator Inputs:
    • Parent Demon A Level: 10
    • Parent Demon A Race: Fairy
    • Parent Demon B Level: 12
    • Parent Demon B Race: Jirae
  • Calculator Outputs:
    • Predicted Result: Brute (Level 10-20)
    • Average Parent Level: 11
    • Base Fusion Level: 11
    • Level Range Modifier: +/- 5
    • Potential Lowest Level: 6
    • Potential Highest Level: 16
  • Interpretation: Based on the fusion chart, a Fairy and a Jirae demon will likely result in a Brute demon. With an average level of 11, you can expect a Brute demon in the level 6-16 range. This means you might get demons like Mokoi (Brute, Lvl 10) or Oni (Brute, Lvl 16), depending on the exact demon list. This helps you prepare for the skills and stats of a Brute demon.

Example 2: Mid-Game Optimization

  • Goal: Create a powerful demon for a specific boss fight.
  • Parent Demon A: Archangel (Divine, Level 30)
  • Parent Demon B: Orthrus (Beast, Level 35)
  • Calculator Inputs:
    • Parent Demon A Level: 30
    • Parent Demon A Race: Divine
    • Parent Demon B Level: 35
    • Parent Demon B Race: Beast
  • Calculator Outputs:
    • Predicted Result: Holy (Level 27-37)
    • Average Parent Level: 32.5
    • Base Fusion Level: 32
    • Level Range Modifier: +/- 5
    • Potential Lowest Level: 27
    • Potential Highest Level: 37
  • Interpretation: Fusing a Divine and a Beast demon typically yields a Holy demon. With parents around level 30-35, you’re looking at a Holy demon in the level 27-37 range. This could include demons like Principality (Holy, Lvl 29) or Dominion (Holy, Lvl 35). Knowing this allows you to prepare for the Holy demon’s affinities and plan skill inheritance accordingly for your boss strategy. This is a crucial step in using a Shin Megami Tensei 5 Fusion Calculator effectively.

How to Use This Shin Megami Tensei 5 Fusion Calculator

Our Shin Megami Tensei 5 Fusion Calculator is designed for ease of use, providing quick and accurate predictions for your demon fusion endeavors. Follow these simple steps to get the most out of the tool:

  1. Input Parent Demon A Details:
    • Parent Demon A Level: Enter the current level of your first demon. Ensure it’s a valid number between 1 and 99.
    • Parent Demon A Race: Select the race of your first demon from the dropdown list.
  2. Input Parent Demon B Details:
    • Parent Demon B Level: Enter the current level of your second demon. Again, ensure it’s between 1 and 99.
    • Parent Demon B Race: Select the race of your second demon from the dropdown list.
  3. Calculate Fusion: The calculator updates in real-time as you change inputs. If you prefer, you can click the “Calculate Fusion” button to manually trigger the calculation.
  4. Read the Results:
    • Primary Result: This prominently displayed section shows the “Predicted Resulting Demon Race” and its “Potential Level Range.” This is your main takeaway.
    • Intermediate Values: Below the primary result, you’ll find details like “Average Parent Level,” “Base Fusion Level,” “Level Range Modifier,” “Potential Lowest Level,” and “Potential Highest Level.” These values provide insight into how the final prediction was derived.
  5. Understand the Formula: A brief explanation of the underlying formula is provided to help you grasp the mechanics.
  6. Utilize the Fusion Chart: Refer to the “Simplified SMT5 Race Fusion Chart” table to see how different race combinations generally lead to specific resulting races.
  7. Analyze the Chart: The “Predicted Level Distribution Likelihood” chart visually represents the probability of your resulting demon falling into lower, mid, or higher ends of the predicted level range.
  8. Reset or Copy: Use the “Reset” button to clear all inputs and start fresh. The “Copy Results” button allows you to quickly copy the key output values to your clipboard for sharing or record-keeping.

Decision-Making Guidance:

Use the predicted race to plan for skill inheritance and elemental affinities. The level range helps you anticipate the power level of your new demon and whether it will be immediately useful or require further leveling. If the predicted level is too low, consider leveling up your parent demons or using higher-level ingredients. If the race isn’t what you want, experiment with different parent demon races using the Shin Megami Tensei 5 Fusion Calculator.

Key Factors That Affect Shin Megami Tensei 5 Fusion Results

While our Shin Megami Tensei 5 Fusion Calculator provides excellent predictions, understanding the underlying factors that influence fusion outcomes in SMT5 is crucial for true mastery. Here are the key elements:

  1. Parent Demon Levels: The most direct influence on the resulting demon’s level. Higher average parent levels generally lead to higher-level fused demons. However, there are caps and specific demon requirements.
  2. Parent Demon Races: This is the primary determinant of the resulting demon’s race. Each combination of two races has a fixed outcome, as seen in the fusion chart. Understanding these combinations is fundamental to targeting specific demon types.
  3. Special Fusions: Some powerful or unique demons cannot be created through standard two-demon fusion. These “Special Fusions” often require three or more specific demons and sometimes have unique level requirements or unlock conditions. Our SMT5 Fusion Calculator focuses on standard fusions.
  4. Essence Fusion: SMT5 introduces the Essence system, allowing you to transfer skills and affinities from one demon’s Essence to another. This doesn’t change the fusion outcome itself but significantly impacts the utility and power of the resulting demon, allowing for highly customized builds.
  5. Skill Inheritance: When fusing, the resulting demon inherits a selection of skills from its parents. The number and type of skills inherited depend on the parents’ skill lists and the resulting demon’s innate skill slots. Planning skill inheritance is a meta-game in itself.
  6. Elemental Affinities: Every demon has strengths and weaknesses to various elemental attacks. The resulting demon’s affinities are usually predetermined by its race, but Essence fusion can alter them. Knowing the resulting demon’s affinities helps in party composition.
  7. Fusion Accidents: Occasionally, a fusion can go awry, resulting in a completely different demon than predicted. These “fusion accidents” are rare and often yield unique or powerful demons, adding an element of surprise to the fusion process.
  8. Compendium Registration: Fusing a demon registers it in the demon compendium. This allows you to summon it later for a fee, making it easier to re-acquire demons for future fusions or party adjustments. The cost scales with the demon’s level and stats.

Frequently Asked Questions (FAQ) about Shin Megami Tensei 5 Fusion

Q: Can this Shin Megami Tensei 5 Fusion Calculator predict special fusions?

A: This specific Shin Megami Tensei 5 Fusion Calculator is designed for standard two-demon fusions. Special fusions, which often require three or more specific demons, are not covered by this tool due to their unique and fixed recipes. You would typically need a dedicated compendium or guide for those.

Q: How accurate is the level prediction?

A: The level prediction provides a potential range based on the average of the parent demons’ levels. While the exact demon created depends on the game’s internal compendium and the “next available” demon of that race, the range gives a very good indication of the resulting demon’s power level. It’s a reliable guide for the SMT5 Fusion Calculator.

Q: Does the calculator account for skill inheritance?

A: No, this Shin Megami Tensei 5 Fusion Calculator focuses on predicting the resulting demon’s race and level. Skill inheritance is a complex system where the resulting demon inherits a selection of skills from its parents. You would need to consult a demon compendium or an in-game fusion preview to plan skill inheritance.

Q: What if I get a “fusion accident”?

A: Fusion accidents are rare, random events where a fusion results in a demon different from the predicted outcome. Our SMT5 Fusion Calculator predicts the standard outcome. Accidents are an unpredictable part of the game, often leading to unique or powerful demons.

Q: Can I use this calculator to find specific demons?

A: Yes, indirectly. If you know the race of the demon you want, you can use the fusion chart to see which parent race combinations yield that result. Then, you can experiment with parent levels to get into the desired level range. For precise demon targeting, a full demon compendium is often used in conjunction with a Shin Megami Tensei 5 Fusion Calculator.

Q: Why are there “level range modifiers”?

A: The level range modifier accounts for the game’s internal logic. The game doesn’t just create a demon at the exact average level; it finds the lowest-level demon of the resulting race that is at or above the calculated base level. The range helps represent this flexibility and the potential for slight variations.

Q: Is this calculator specific to Shin Megami Tensei V?

A: Yes, the fusion chart and level mechanics used in this calculator are tailored specifically for Shin Megami Tensei V. Fusion rules can vary significantly between different SMT titles, so it’s not recommended for other games.

Q: How do Essences affect fusion?

A: Essences allow you to transfer skills and affinities to a demon without fusing it. While Essences don’t change the *outcome* of a fusion (i.e., which demon is created), they are crucial for customizing the resulting demon’s abilities after it’s been fused. They are a powerful tool for optimizing your demons in SMT5.

© 2023 SMT5 Fusion Calculator. All rights reserved. Shin Megami Tensei V © ATLUS. © SEGA.



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