Uma Musume Affinity Calculator – Everything You Need to Know

1. What Is the Uma Musume Affinity Calculator?

The Uma Musume Affinity Calculator is a fan-made online tool designed for players of the popular Japanese mobile game Uma Musume: Pretty Derby. This calculator helps players analyze, plan, and optimize character relationships—known as Affinity or Bond Levels—between horse girls (Uma Musume) in the game.

In Uma Musume: Pretty Derby, every character has unique friendship and compatibility stats that affect training results, race performance, and team synergy. The Affinity Calculator allows players to easily check which Uma Musume pair well together, helping create the most efficient and powerful team combinations for story mode and PvP races.

Simply put, it’s a strategy companion tool for anyone who wants to get the most out of their Uma Musume roster without wasting training attempts or items.

2. Why Is Affinity Important in Uma Musume?

Affinity—sometimes referred to as Friendship Level or Compatibility—plays a vital role in the success of your Uma Musume team. The higher the Affinity between characters, the better the stat bonuses and support effects you’ll receive during training and racing.

Here’s how Affinity affects gameplay:

• Training Efficiency: Higher affinity with support cards boosts stats like Speed, Power, and Stamina faster.

• Skill Activation: Some skills trigger more consistently when affinity levels are strong.

• Team Races: Good compatibility ensures your team works together smoothly in PvP events.

• Story Events: Certain story interactions unlock special dialogue or bonus items when affinity levels are high.

Without a proper understanding of affinity mechanics, players can waste valuable training turns or miss hidden bonuses. That’s why the Uma Musume Affinity Calculator is so popular — it eliminates the guesswork and helps optimize gameplay.

3. How the Uma Musume Affinity Calculator Works

The Uma Musume Affinity Calculator works by using the game’s internal compatibility chart and data from the community to estimate relationship values between each character.

Here’s a breakdown of how it functions:

1. Select Your Uma Musume: Choose your main horse girl (like Special Week, Silence Suzuka, or Mejiro McQueen).

2. Add Support or Teammates: Pick support cards or race partners.

3. Calculate Compatibility: The tool automatically computes Affinity Scores based on known data and gameplay patterns.

4. View Results: You’ll see a rating (e.g., High, Medium, Low) or a numerical value indicating how compatible your selections are.

Some calculators even show relationship boosts from shared traits—like Bloodlines, Racing Styles (Runner, Stalker, Leader, Chaser), and Training Types.

Players often use this tool before 育成 (Ikusei – Training Mode) to plan which characters to pair for maximum efficiency and faster stat growth.

4. Benefits of Using the Uma Musume Affinity Calculator

Using the Uma Musume Affinity Calculator can dramatically improve your training results, race performance, and team building.

Main Benefits:

• ✅ Save Time: No need for trial and error — instantly see which characters work best together.

• ⚙️ Optimize Training: Boost important stats (like Speed, Power, or Wisdom) faster with compatible partners.

• 🏆 Win More Races: Strong affinity equals better in-race synergy and more consistent skill activations.

• 💡 Strategic Planning: Helps design your ideal team layout for both Story Mode and Team Stadium (PvP).

• 🎯 Better Support Card Setup: Identify which support cards to bring for maximum bond efficiency.

For advanced players, the Affinity Calculator is a meta-level tool — essential for achieving A-Rank or S-Rank Uma Musume efficiently.

5. Where to Find the Uma Musume Affinity Calculator

Several fan communities and websites host their own versions of the Uma Musume Affinity Calculator. Since the game has an active international fanbase, tools are often updated to include new characters and compatibility data from game patches.

Here are some popular places where you can find the calculator:

• GitHub Projects: Some developers share open-source versions of the calculator for free.

• Reddit (r/UmaMusume): Links to updated tools and guides are frequently shared by the community.

• Japanese Fan Sites: Websites like umamusume.jp and wikiwiki.jp sometimes embed compatibility charts or calculators.

• Google Sheets Calculators: Many fans have created interactive spreadsheets for manual calculation and reference.

Always check for the latest version of the calculator, as updates may include new Uma Musume releases, race data, and skill interactions that affect affinity results.

6. Tips for Using the Calculator Effectively

To get the best out of the Uma Musume Affinity Calculator, it’s important to understand a few strategic tips:

✔ Use Before Training: Always calculate affinity before starting a new training run to avoid poor pairings.
✔ Match Bloodlines: Horses that share compatible parents or racing traits often have higher affinity.
✔ Prioritize Support Bonds: Focus on support cards that give strong friendship bonuses when affinity increases.
✔ Combine Data with Experience: The calculator gives estimates — combine that with your gameplay intuition for the best results.
✔ Stay Updated: Recheck calculator data after every Uma Musume event or new character update since compatibility stats can change.

When used smartly, the Uma Musume Affinity Calculator becomes a powerful tool for maximizing results in both 育成 (Training) and Racing modes.

Conclusion

The Uma Musume Affinity Calculator is more than just a fan-made tool — it’s an essential strategy resource for players who want to master the game. By helping you understand and optimize character relationships, team synergy, and training results, this calculator makes progression smoother and more rewarding.

Whether you’re a beginner trying to train your first A-Rank Uma Musume, or a veteran fine-tuning your Team Stadium lineup, using an Affinity Calculator can be the difference between an average team and a championship-level lineup.

FAQs

1. Is the Uma Musume Affinity Calculator official?
No, it’s a fan-made tool developed by community members, not by Cygames.

2. Does it work for the global version?
Yes — most calculators work for both Japanese and English versions.

3. How accurate is it?
Accuracy depends on updated data from the game’s internal compatibility tables, which fans maintain regularly.

4. Can I use it on mobile?
Yes, most versions are web-based or Google Sheet–based, so they’re mobile-friendly.

5. Do I need to download anything?
No download needed — you can access it online for free.