Q. When can Nub Theory predict a baby's gender?
Nub Theory is commonly used for fun with ultrasound images from around 11 to 14 weeks by comparing the genital nub angle with the spine.
Boy or Girl?
Satisfy your curiosity, just for fun.
Nub Theory, Chinese Calendar, and pregnancy dream analysis
free gender prediction tools for expecting parents.
Gender Prediction Tests
Imagine your baby's gender through a variety of fun methods.
Nub Theory
Predict gender using the spine and nub angles in 11 to 16 week ultrasound images.
Chinese Gender Calendar
Try a centuries-old calendar method based on mother's age and conception month.
Pregnancy Dream Analysis
Explore traditional dream symbols and what they are said to mean.
Pregnancy Tools
Helpful tools for due dates, baby names, and contraction timing.
Contraction Timer
Track contraction intervals and duration with a simple tap.
Due Date D-Day Calculator
See how many days remain until your due date.
Baby Name Roulette
Spin for meaningful Korean baby nickname ideas.
Weekly Fetal Growth
See how your baby grows week by week.
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12weeks
A little plum-sized baby
Genital development becomes clearer around this stage.
Moms' Empathy Polls
Honest thoughts from expecting mothers in the same season.
What is your gender intuition?
What feels hardest right now?
What are you craving most?
Favorite prenatal care?
Biggest pregnancy change?
Frequently Asked Questions
Common questions about baby gender prediction tools.
Q. What is the Chinese Gender Calendar?
It is a traditional prediction chart based on the mother's age and conception month. Please enjoy it as a fun method, not as medical proof.
Q. Can pregnancy dreams predict gender?
Pregnancy dream analysis is a cultural tradition based on symbolic meanings. It is for fun and cannot confirm medical information.
Q. Are the results 100% accurate?
No. These tools are entertainment-based predictions. For reliable information, consult your healthcare provider.
Q. Is OhMyBaby free?
Yes. The prediction tests and pregnancy tools are free to use without sign-up.