Baby Gender Prediction at 7 Weeks
At 7 weeks, your baby is growing rapidly but gender prediction remains off the table. The genital ridge exists, but it's identical in all embryos at this stage — there's nothing for any method to detect yet.
Your Baby at 7 Weeks
- ✦Baby measures about 10mm — the size of a blueberry
- ✦Fingers and toes are beginning to form as tiny paddles
- ✦The brain is developing rapidly, forming distinct regions
Gender Prediction Methods at 7 Weeks
Nub Theory
No nub is distinguishable at 7 weeks. The genital tubercle is still an undifferentiated ridge — identical in all embryos regardless of chromosomes.
Skull Theory
Skull theory cannot be applied at 7 weeks. The cranial bones are still forming and show no sex-linked differences.
Chinese Gender Calendar
The Chinese Gender Calendar is always available — based on lunar age at conception and conception month. Results are fun but not reliably accurate.
AI Ultrasound Analysis
AI has no ultrasound markers to analyse for gender at 7 weeks. The scan is useful for confirming pregnancy and heartbeat, not gender.
Get Your AI Gender Prediction
Save your 7-week scan — come back at 12 weeks when our AI can start analysing for gender markers.
Upload Your 7-Week Scan →Frequently Asked Questions
Can you tell the gender of a baby at 7 weeks?
No — at 7 weeks, all embryos look identical in terms of their reproductive anatomy. The sexual differentiation process hasn't begun externally.
How accurate is gender prediction at 7 weeks?
Essentially 50/50 at 7 weeks. No proven method can predict gender from a 7-week ultrasound. Wait until at least 11-12 weeks.
What does a boy/girl look like on an ultrasound at 7 weeks?
A 7-week scan typically shows an embryo with a visible heartbeat and small limb buds. There are no gender-specific features visible at this stage.