Uma Musume Legacy Calculator
Stat Inheritance Distribution
Visual representation of potential stat distribution based on current factors.
| Factor Level | Base Gain | Max Potential | Inherit Chance |
|---|
What is the Uma Musume Legacy Calculator?
The Uma Musume Legacy Calculator is an essential tool for trainers looking to maximize the potential of their horse girls. In the world of Uma Musume Pretty Derby, inheritance (or "Legacy") is the process where a new trainee inherits stats, skills, and aptitudes from their parents and grandparents. This Uma Musume Legacy Calculator helps you predict the outcome of these inheritance events, which occur at the start of training and during the spring of years two and three.
Who should use it? Competitive players aiming for Grade A+ or S rank horses, as well as casual players who want to understand why their stats aren't increasing as expected. A common misconception is that inheritance is purely random; while there is an RNG element, the Uma Musume Legacy Calculator demonstrates that stat thresholds and star ratings significantly weight the odds in your favor.
Uma Musume Legacy Calculator Formula and Mathematical Explanation
The math behind the Uma Musume Legacy Calculator relies on the "Blue Factor" system. Each star on a blue factor represents a fixed stat increase. The formula used by our Uma Musume Legacy Calculator is as follows:
Total Stat Gain = Σ(Star_Rating * Multiplier) * Compatibility_Bonus
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Star_Rating | The number of stars on a Blue Factor (1-3) | Stars | 1 – 18 Total |
| Multiplier | Points granted per star | Points | 5 – 9 pts |
| Compatibility | Relationship between parents | Ratio | 1.0 – 2.0 |
| Stat Threshold | Parent stat required for 3-star chance | Points | 600 (B) or 1100 (SS) |
Practical Examples (Real-World Use Cases)
Example 1: The "B-Rank" Strategy
A trainer uses two parents with a total of 18 Speed stars. Both parents have a Speed stat of 600 (B Rank). Using the Uma Musume Legacy Calculator, we find that the trainee will gain approximately 126 Speed points over the course of training, with a 6% chance of generating a new 3-star Speed factor.
Example 2: High-End Optimization
A trainer uses parents with 12 stars but with stats over 1100 (SS Rank). While the total gain is lower (approx 84 points), the Uma Musume Legacy Calculator shows the probability of a 3-star factor increases to roughly 10-15% depending on the specific scenario mechanics.
How to Use This Uma Musume Legacy Calculator
- Input Total Stars: Count all the blue stars for the specific stat (e.g., Stamina) across both parents and all four grandparents. Enter this into the Uma Musume Legacy Calculator.
- Enter Target Stat: Input the current stat value of the parent horse you are using for breeding.
- Select Compatibility: Choose the compatibility symbol shown in-game (Triangle, Circle, or Double Circle).
- Analyze Results: Look at the "Estimated Total Stat Gain" to see if this pair meets your training goals.
- Interpret the Chart: The SVG chart in the Uma Musume Legacy Calculator shows how balanced your inheritance is across different attributes.
Key Factors That Affect Uma Musume Legacy Results
- Stat Thresholds: Reaching 600 (B) in a stat is the minimum requirement to even have a chance at a 3-star factor.
- Compatibility (Urazakura): Higher compatibility increases the number of "White Factors" (skills) inherited, though it has a smaller impact on Blue Factors.
- RNG Variance: Even with the Uma Musume Legacy Calculator, remember that the actual gain per star can fluctuate between 5 and 9 points.
- Grandparent Influence: Grandparents contribute exactly the same amount per star as parents do in the initial inheritance phase.
- Scenario Bonuses: Certain training scenarios (like URA or MML) provide hidden multipliers to inheritance events.
- Factor Rarity: 3-star factors are significantly rarer than 1 or 2-star factors, following a non-linear probability curve.
Frequently Asked Questions (FAQ)
1. Does the Uma Musume Legacy Calculator guarantee a 3-star factor?
No, the Uma Musume Legacy Calculator provides probabilities. A 3-star factor is never guaranteed, even with maxed stats.
2. Why is 600 stats important for the Uma Musume Legacy Calculator?
In the game code, having a stat below 600 (B rank) results in a 0% chance of obtaining a 3-star factor for that specific stat.
3. Can I inherit more than 18 stars?
No, the maximum possible blue stars in a legacy tree is 18 (3 stars x 6 horses).
4. Does compatibility affect stat gains?
Compatibility primarily affects the *number* of factors inherited, not the *value* of the blue stat gain itself.
5. How often do inheritance events happen?
Three times: At the start, and in April of the second and third years.
6. What is a "White Factor"?
White factors are skills or race-specific bonuses. The Uma Musume Legacy Calculator focuses on Blue (Stat) factors.
7. Should I prioritize stars or compatibility?
For raw stats, prioritize stars. For skill-heavy builds, prioritize compatibility.
8. Is the Uma Musume Legacy Calculator updated for the latest scenario?
Yes, the base logic for blue factors remains consistent across all current game scenarios.
Related Tools and Internal Resources
- Comprehensive Training Guide – Learn how to reach S+ rank consistently.
- Support Card Tier List – Find the best cards to pair with your legacy horses.
- Stat Thresholds Explained – A deep dive into B, A, and S rank requirements.
- Skill Inheritance Mechanics – How to pass down legendary skills.
- Race Compatibility Chart – Optimize your G1 race schedule for better legacy.
- Event Choice Guide – Make the right decisions during training events.