Uma Musume Inheritance Calculator
Inheritance Results
Inherited Stat Distribution
A visual representation of the final inherited stats.
What is the Uma Musume Inheritance Calculator?
The Uma Musume Inheritance Calculator is a specialized tool designed for players of the popular game “Uma Musume: Pretty Derby.” It helps trainers predict the stat bonuses a new Uma Musume will inherit from her parents. In the game, inheritance is a core mechanic where you select two parent characters to pass down stats and special abilities (called “factors”) to your trainee. This calculator demystifies the process, providing a reliable estimate of the total stat points gained from Speed, Stamina, Power, Guts, and Intelligence, allowing for more strategic planning and breeding.
Uma Musume Inheritance Formula and Explanation
The total inherited stat for each of the five main stats is a combination of a base percentage from the parents’ stats, a flat bonus from their blue factors, and a multiplier from their compatibility. The formula this calculator uses is a well-regarded community approximation:
Total Inherited Stat = (Base Stat Gain + Total Factor Bonus) * Compatibility Multiplier
This formula provides a clear and predictable model for how the Uma Musume inheritance system functions.
Variables Table
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Base Stat Gain | A percentage of the combined stats of both parents. Approximated as 6.5% from each parent. | Points | 50 – 150 per stat |
| Total Factor Bonus | A fixed stat bonus from all inherited Blue Factors from both parents. | Points | 20 – 200+ |
| Compatibility Multiplier | A bonus multiplier based on the parents’ relationship (◎, ◯, △, ✕). | Multiplier | 0.95x – 1.10x |
| Parent Stat | The value of a specific stat (e.g., Speed) for a parent character. | Points | 300 – 1200+ |
Practical Examples
Example 1: High-Speed Build
A trainer wants to create a fast runner. They choose two parents with high Speed stats and good Speed factors.
- Inputs: Parent A Speed (1100), Parent B Speed (1000), 4x 3-Star Speed Factors, ◎ Compatibility.
- Results: The calculator would show a significant inherited Speed bonus. The Base Gain would be high due to the parents’ stats, the Factor Bonus would be substantial from the 3-star factors (4 * 21 = +84 stats), and the ◎ compatibility would multiply these gains further. The resulting Uma Musume starts with a massive head start in Speed.
Example 2: Balanced Build
A trainer needs a versatile racer for medium-distance tracks. They choose parents with balanced stats and average compatibility.
- Inputs: Parents with ~800 in Speed, Stamina, and Power. A mix of 1-star and 2-star factors. ◯ Compatibility.
- Results: The calculator will predict a moderate and evenly distributed stat inheritance. This is ideal for creating an all-rounder character who isn’t weak in any single area. Using our Breeding Loop Planner can help find ideal pairs for this.
How to Use This Uma Musume Inheritance Calculator
- Set Compatibility: Choose the compatibility symbol (◎, ◯, △, ✕) that matches the parent pair in the game. This is shown in the top right during parent selection.
- Enter Parent Stats: Input the five base stats for both Parent A and Parent B. Use the final stats from their training report.
- Add Blue Factors: Enter the total number of 1-star, 2-star, and 3-star blue factors the parents are contributing. Note that this calculator simplifies all blue factors into a single pool for clarity.
- Calculate & Analyze: Click the “Calculate” button. The “Inheritance Results” section will display the total inherited stats, while the chart provides a visual breakdown. The intermediate values show exactly where the stats came from.
- Interpret the Results: Use the output to see if the inheritance meets your training goals. If not, adjust the parent selection or aim for better factors in your next breeding attempt. Our Factor Farming Guide can provide tips.
Key Factors That Affect Uma Musume Inheritance
- Parent Stats: The higher the parents’ base stats, the higher the base inheritance. A parent with 1200 Speed will contribute more than one with 600 Speed.
- Blue Factor Rarity: 3-star factors provide a significantly larger stat bonus (+21) than 2-star (+12) or 1-star (+5) factors. Farming for 3-star factors is a key goal for top-tier inheritance.
- Parent Compatibility: Excellent (◎) compatibility provides a direct multiplier to the stats gained, making it highly desirable. This is influenced by shared race histories and character relationships.
- Number of Factors: Simply having more factors, even low-star ones, adds up. A parent with many 1-star factors can still contribute a decent bonus.
- Grandparent Factors: While this calculator simplifies the view to just parents, the grandparents’ factors also contribute to the total pool passed to the parents. Planning a full lineage is part of advanced strategy, which our Advanced Breeding Guide covers.
- Training Scenario Bonuses: Some training scenarios provide end-of-run stat boosts that apply *before* factor calculation, making it easier to hit high stat thresholds like 1100+.
Frequently Asked Questions (FAQ)
1. How are the stats from Blue Factors calculated?
Each blue factor provides a fixed stat bonus based on its rarity. According to community data, a 3-star factor gives +21 points, a 2-star gives +12, and a 1-star gives +5 to its corresponding stat. This calculator sums up all factor bonuses from both parents.
2. Does this calculator account for grandparents?
This calculator simplifies the process by focusing on the two direct parents. In the game, grandparents pass their factors to the parents, which then become part of the parents’ total pool of inheritable factors. For an accurate calculation, you should input all factors shown on the parent selection screen, which includes those from grandparents.
3. What’s the difference between ◎ and ◯ compatibility?
The compatibility symbol acts as a multiplier on the total stats inherited from base stats and factors. ◎ (Excellent) provides a higher multiplier than ◯ (Good), resulting in a better overall inheritance. A higher affinity also increases the chance of inheriting more factors during the two inheritance events in-game.
4. Why are my calculated stats different from in-game results?
This Uma Musume Inheritance Calculator uses a highly accurate community-tested formula, but the game has a small amount of randomness (RNG). The final in-game numbers can vary slightly. This tool provides a very close average and is intended for strategic planning.
5. Do Green or Red Factors give stats?
No, Green Factors grant unique skills and Red Factors improve aptitudes (e.g., for certain distances or track types). Only Blue Factors directly increase the five main stats.
6. What is a “9-star factor parent”?
This term refers to a parent who has a total of 9 stars across their three inherited blue factors (e.g., three 3-star factors). This is a highly sought-after goal for breeders as it provides a massive stat bonus. You can learn how to create one in our 9-Star Parent Farming Guide.
7. Is it better to focus on one high stat or have balanced stats on a parent?
It depends on your goal. For creating a specialist (e.g., a short-distance sprinter), having one parent with extremely high Speed is best. For versatile racers, parents with balanced stats are more effective. This Uma Musume Inheritance Calculator can help you test both scenarios.
8. Where can I find more information on breeding strategies?
Beyond our calculator, exploring community forums and guides is a great way to learn advanced techniques. Check out our Community Resources page for links to other helpful tools and discussions.