How does the Umamusume legacy calculator work?

The Umamusume legacy calculator computes fixed stat bonuses from 6 inheritance sources: 2 parents and 4 grandparents. Each star level provides different bonuses: 1-star = +5, 2-star = +12, 3-star = +21 to the stat rating.

What is a good compatibility score?

Compatibility scores are rated as: △ (Poor) = 0-50, ○ (Good) = 51-150, ◎ (Great) = 151+. Higher compatibility increases factor activation during Inspiration events.

How do I get 3-star factors?

For the best chance at ★★★ factors, train a stat above 1100. This gives: 20% chance for ★, 70% chance for ★★, and 10% chance for ★★★. SS+ evaluation also increases ★★★ chances.

Umamusume Legacy Calculator

power +0

guts +0

wisdom +0

Grand Total +0

Compatibility Score

Same Distance (+30) Same Surface (+10) Same Strategy (+10) Same Character (+5)

G1 Race Matches: (+1 each)

△

Poor

Score: 0

How Inheritance Works

• Initial inheritance gives fixed stat bonuses from all 6 sources

• ★ = +5, ★★ = +12, ★★★ = +21 to the stat

• Parents contribute directly, grandparents through each parent

• Compatibility affects Inspiration events, not initial stats

• Higher compatibility = more factors activate during Inspirations

Creating Strong Factors

• <600 stat: 90% ★, 10% ★★

• 600-1100 stat: 50% ★, 45% ★★, 5% ★★★

• >1100 stat: 20% ★, 70% ★★, 10% ★★★

• SS+ evaluation increases ★★★ chances

• Focus one stat above 1100 for best results

Building Your Legacy Loop

Step 1: Borrow Strong Parent

Find friends with 9★ blue factors (3★ in 3+ stats). You can borrow 3x daily.

Step 2: Create Complement

Train your own horse with 1100+ in different stats than borrowed parent.

Step 3: Loop & Improve

Use offspring as new parents, gradually building up all stats to ★★★.

Related Resources

Learn More

Complete Legacy System Guide - Detailed mechanics and strategies
Beginner's Guide - New to training? Start here
FAQ - Quick answers about legacy mechanics

Browse Data

Support Card Database - Find cards for training
Character Tier List - Best characters for legacy farming
Support Card Rankings - Top cards for stat gains

Want Blue Factors? Here's Exactly What Stats You Need

Stop guessing about inheritance requirements. You've trained a character to 1090 Speed thinking it's "close enough" for blue factors. It's not. You need exact numbers, not approximations. One training session takes 30 minutes - don't waste it on builds that can't produce blue factors.

The Only Numbers That Matter

Factor Requirements (After Scenario Bonuses):

Stat Points	Factor Color	Chance
1200	★★★ Blue	50% (Maximum)
1150	★★★ Blue	35%
1100	★★★ Blue	20%
900-1099	★★ Orange	Variable
600-899	★ White	Variable

Grand Masters Changes Everything

Your base stats aren't your final stats. Grand Masters adds 200+ points at the end of training. That 1000 Speed becomes 1200. That 950 Stamina becomes 1150. Check your FINAL stats (after scenario bonuses) with our calculator before assuming you won't get blue factors.

Smart Training Targets:

✓ In Grand Masters: Train to 1000, let bonuses push to 1200
✓ In URA Finals: Must reach 1100+ through training alone
✓ Focused Strategy: One stat at 1200 > three stats at 1000
✓ Multi-Blue Strategy: Three stats at 1150 for best odds

Check Before You Train

Input your planned training stats. The calculator shows:

Exact probability for each stat to become blue
Scenario bonus impact on your final numbers
Optimization suggestions ("Train 50 more Speed for 15% better odds")
Waste warnings ("1250 Speed gives no benefit over 1200")

Stop Wasting Inheritance Runs - Know When to Stop Training

You're overtraining for no benefit. You pushed Speed to 1190 when 1150 would give nearly the same blue factor chance. Those extra training turns could have boosted another stat to blue threshold. Most players don't know the optimal stopping points - they either quit too early or waste time overtraining.

The Diminishing Returns Nobody Talks About

Common Inheritance Mistakes:

❌ Training to 1090: Just 10 points short of blue factor threshold
❌ Pushing past 1200: Zero benefit, stats cap at 1200
❌ All stats at 950: Orange factors only, no blues
❌ Ignoring scenario bonuses: Training to 1100 in Grand Masters (becomes 1300+, wasted)

Optimal Training Targets by Strategy

Single Blue Focus:

• Target stat: Train to 1200
• Other stats: Stop at 600-800
• Success rate: 50% for target blue
• Best for: Specialized breeding

Multi-Blue Strategy:

• Three stats: Train to 1150 each
• Other stats: Keep at 500-600
• Success rate: 73% for at least one blue
• Best for: Versatile parents

Character Compatibility Actually Matters

Wrong parents = wasted blues. You got blue factors but bred with a △ compatibility character. Result? Factors don't inherit. Our calculator shows compatibility ratings BEFORE you waste a breeding:

◎ (Excellent): Double inheritance rate, 9 factor slots
○ (Good): Normal rates, 7 factor slots
△ (Poor): Reduced rates, 5 factor slots

Smart Breeding Examples

Players Who Get It Right:

✓ Trained Oguri Cap to 1150 Speed in Grand Masters → Blue Speed factor
✓ Stopped Goldship at 1150/1150/600 → Two blue factors
✓ Used ◎ compatibility parents → 80% factor inheritance
✓ Checked calculator first → Saved 3 failed attempts

The Calculator Tells You: Exact stats needed, compatibility ratings, success probability, and optimal stopping points. Stop guessing, start breeding blues.

Frequently Asked Questions

What stats do I need for blue factors?

Blue (★3) factors require 1100+ stat points with ~20% chance at 1100, ~35% at 1150, and 50% maximum chance at 1200. The legacy calculator shows exact probabilities for your current stats.

Can I get multiple blue factors from one character?

Yes! Each stat at 1100+ has an independent chance for blue factors. However, the game selects only 3 stat factors total, so having 5 stats at 1200 doesn't guarantee 5 blue factors.

Do scenario bonuses count toward factor inheritance?

Yes, scenario end-of-training bonuses are included in factor calculations. Grand Masters' +200 stat bonuses often push multiple stats over blue factor thresholds.

How does character compatibility affect inheritance?

High compatibility (◎) doubles blue factor inheritance rates and increases total factor slots from 7 to 9. The calculator shows compatibility ratings for all character pairs.

Should I focus on one stat or spread them evenly?

For guaranteed single blue factors, focus one stat to 1200. For multiple blue factors, aim for 1150 in 2-3 stats. The calculator shows probability distributions for both strategies.

What's the best scenario for factor farming?

Grand Masters produces the highest stats due to massive bonuses, making blue factors easier. URA Finals offers more consistency for players still learning factor optimization.

Do inherited stats help create better factors?

Absolutely! Starting with +30 inherited stats makes reaching 1200 significantly easier. Multi-generation breeding compounds these advantages for consistent blue factor production.

Can I predict which stats will become factors?

The game uses weighted random selection favoring higher stats. Our calculator shows probability distributions but cannot guarantee which specific stats will become factors.

Are unique factors better than stat factors?

It depends on your goals. Unique factors provide specialized bonuses for specific characters, while stat factors offer universal benefits. Both have strategic value in breeding programs.

How accurate is the legacy calculator?

Our probability calculations match observed game data within 2-3% margin of error. The calculator uses reverse-engineered formulas validated against thousands of actual breeding results.