🔬 Updated 2026 · Science-Based
🧬
Baby Genetics Calculator
Predict your baby’s eye color, hair color, height & facial features based on mom & dad’s genetics
How accurate is this? This calculator applies Mendelian genetics + polygenic inheritance models updated with 2025–2026 peer-reviewed research. Results show probabilities, not guarantees — every baby has ~60–70 new genetic mutations. Fill in both parents below, then hit Calculate!
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Eye Color
Driven by ~10 genes incl. OCA2, HERC2, SLC45A2
👩 Mom
👨 Dad
💇
Hair Color
Controlled by 50–100+ genes; eumelanin & pheomelanin key factors
👩 Mom
👨 Dad
🫦
Cleft Chin
Linked to chromosome 5; ~90% of people do not have one
👩 Mom
✅ Yes
❌ No
👨 Dad
✅ Yes
❌ No
😊
Cheek Dimples
Caused by bifid zygomaticus major muscle; ~15% of people have them
👩 Mom
✅ Yes
❌ No
👨 Dad
✅ Yes
❌ No
👂
Earlobe Type
Determined by ~50 genes (highly polygenic); not simple dominant/recessive
👩 Mom
👨 Dad
💆
Widow’s Peak
V-shaped front hairline dip; likely polygenic, not a single dominant gene
👩 Mom
✅ Yes
❌ No
👨 Dad
✅ Yes
❌ No
📏
Height Prediction
Heritability ~80% — the best-predicted physical trait we have
👩 Mom’s Height
👨 Dad’s Height
Baby’s sex (for height estimate)
👦Boy
👧Girl
🌈Surprise!
🍼 Your Baby’s Predicted Traits
Based on Mendelian genetics & peer-reviewed research (2025–2026)
👶
Most Likely Baby Profile
🔬 Scientific Note This calculator uses Mendelian + polygenic inheritance models calibrated from 2025–2026 peer-reviewed research. Probabilities are educational estimates — not medical predictions. Sources include: Strome et al. (2024, Genetics); Cabrejas-Olalla et al. (2025, Forensic Science International: Genetics); Brancato et al. (2023, Genes); Walsh & Kayser (2023); Yang et al. (2010, Nature Genetics); Silventoinen et al. (2003, Twin Research); Shaffer et al. (2017, AJHG).
Taslima Khanam Sultana, a loving mom of three, founded BestBabyCart.com to help new parents navigate the world of baby products with ease. Her passion for making parenting simpler shines through delivering honest, unbiased reviews on must-haves like diapers, strollers, and feeding gear. Taslima’s mission is to empower families with expert tips, ensuring every product is safe and top-quality for your little one. Drawing from her own parenting journey, she’s dedicated to supporting yours!