Uma Musume Affinity Calculator
Estimate the breeding affinity (ηΈζ§) between two parent Umas before you commit to an inherit pair in Uma Musume Pretty Derby. Enter their shared race wins, relationship, and shared aptitudes to get a compatibility score and the β/β/β³/β rating that drives better stat and skill inheritance.
How the Uma Affinity Calculator works
Three simple steps. No signup. No installation.
Enter shared race wins
Count the major (G1) races BOTH parents have won β the single biggest affinity driver.
Set the relationship
Pick whether the two parents share a character line or rival relationship, plus shared distance/style aptitudes.
Get the affinity rating
See a 0β100 compatibility score and the β/β/β³/β symbol so you can pick the strongest inherit pair.
How breeding affinity works in Uma Musume
In Uma Musume Pretty Derby, every trained Uma can be used as a parent to pass inherited "factors" (sparks) to the next trainee. How much carries over depends on affinity β the compatibility score between the trainee and each parent, and between the two parents themselves. The game evaluates three relationships and rates each β/β/β³/β. Affinity is driven mainly by shared major race wins (when both parents won the same G1 races), fixed character relationships (same series, rival pairs, or story links), and shared aptitudes. A β/β/β pairing maximizes both base stat inheritance and the activation rate of blue (stat) and pink (aptitude) factors, which is why experienced players plan inherit pairs carefully across generations rather than breeding at random. This calculator estimates that affinity from its main public drivers so you can compare candidate parent pairs before committing a breeding slot β the exact in-game value also includes Cygames' internal per-character relationship table.
Related free tools
More no-signup tools you might find useful.
Explore all free tools
29 no-signup tools β scroll a shelf and open any of them.
Generators
13
GeneratorTrust Badge Generator
Generate trust badges for your online store in seconds.
GeneratorAmbigram Generator
Create ambigram designs that read the same upside down.
GeneratorMiddle Name Generator
Generate perfect middle name ideas based on first and last name.
GeneratorFancy Text Generator
Turn plain text into dozens of cool fonts you can copy and paste anywhere.
GeneratorGlitch Text Generator
Create creepy zalgo and cursed glitch text with an adjustable intensity.
GeneratorHeart Symbol Generator
Tap to copy hearts, stars, and aesthetic text symbols for any platform.
GeneratorTiny Text Generator
Shrink your words into tiny superscript, subscript, and small-caps text.
GeneratorUpside Down Text Generator
Flip your text upside down to copy and paste anywhere.
GeneratorInvisible Text Generator
Copy invisible blank characters for empty messages, names, and bios.
GeneratorBold Text Generator
Make real bold text that stays bold when you copy and paste it.
GeneratorStrikethrough Text Generator
Cross out your text with strikethrough, slash, and underline styles.
GeneratorText Summarizer
Paste any text and get a clear AI summary with key points.
GeneratorAI Text Humanizer
Rewrite stiff or AI-sounding text so it reads naturally human.
Calculators
14
CalculatorMortgage Calculator
Calculate your monthly mortgage payment and full amortization.
CalculatorMidpoint Calculator
Find the midpoint between two coordinates with steps.
CalculatorAP Chem Score Calculator
Predict your AP Chemistry score from practice exam results.
CalculatorPool Salt Calculator
Calculate exactly how much salt your saltwater pool needs.
CalculatorSIP Calculator
Calculate your UK Share Incentive Plan tax savings.
CalculatorHalf Birthday Calculator
Find your half birthday β exactly 6 months from your birth date.
CalculatorAP Bio Score Calculator
Predict your AP Biology score from practice exam results.
CalculatorAP Calc AB Score Calculator
Predict your AP Calculus AB score from practice exam results.
CalculatorAP Psych Score Calculator
Predict your AP Psychology score from practice exam results.
CalculatorCalculator Bacalaureat
CalculeazΔ media de absolvire a examenului de bacalaureat.
CalculatorCrosswind Calculator
Calculate crosswind and headwind components for any runway.
CalculatorDunk Calculator
Find out if you can dunk β and exactly how high you need to jump.
CalculatorDOTS Calculator
Score your powerlifting total across any bodyweight.
CalculatorERA Calculator
Calculate a pitcher's earned run average in seconds.
Your full website, built by a WhatsApp chat.
Running a gaming blog or esports brand? Pixie generates your website in 60 seconds β text us on WhatsApp.