Everything you need to know about predicting your baby's gender. Compare every method — from professional ultrasound analysis to traditional charts and at-home tests — all in one place.
Baby gender prediction refers to the various methods and techniques used to determine whether a baby will be a boy or a girl before birth. These methods range from medical procedures with high accuracy to traditional folklore and fun at-home tests.
Modern parents have more options than ever: you can analyze your ultrasound images using established theories (Ramzi, Nub, Skull), use traditional calendars like the Chinese Gender Predictor, try at-home tests for fun, or wait for definitive medical confirmation through NIPT or your anatomy scan.
Explore the most popular methods for predicting your baby's gender. Click any card to learn more.
Analyzes placenta position during early pregnancy. Most effective between 6-12 weeks for the earliest possible prediction.
Learn moreExamines the genital tubercle angle from your 12-week scan. Our most requested analysis method for higher confidence.
Learn moreExamines cranial shape characteristics from ultrasound images. Best combined with other methods for a complete analysis.
Learn moreAncient Chinese chart using maternal age and conception month to predict gender. A fun, traditional method to try.
Learn moreBased on the ancient Mayan calendar, this method uses the mother's age and year of conception to predict gender.
Learn moreBaking soda test, ring test, and other fun at-home methods. Great for entertainment while you wait for your scan.
Learn moreCompare all major gender prediction methods by timing, accuracy, and cost to find the right one for you.
| Method | Timing | Accuracy | Cost | Type |
|---|---|---|---|---|
| Ramzi Theory | 6-12 weeks | Anecdotal | From $9.99 | Ultrasound Analysis |
| Nub Theory | 11-14 weeks | Anecdotal | From $9.99 | Ultrasound Analysis |
| Skull Theory | 12+ weeks | Anecdotal | From $9.99 | Ultrasound Analysis |
| Chinese Gender Predictor | Any time | ~50% | Free | Traditional Chart |
| At-Home Tests | Any time | ~50% | Free | DIY / Old Wives' Tales |
| NIPT (Blood Test) | 10+ weeks | ~99% | $100-800* | Medical (Blood) |
| Anatomy Scan | 18-22 weeks | 95-99% | Insurance** | Medical (Ultrasound) |
*NIPT cost varies by insurance coverage and laboratory. May be partially or fully covered when medically indicated.
**Anatomy scan ultrasound typically covered by insurance as part of standard prenatal care.
Answers to common questions about predicting your baby's gender.
Upload your ultrasound and let our experts provide a professional gender prediction using Ramzi, Nub, or Skull theory — or combine all three for maximum confidence.
Medical Disclaimer: Theory-based gender prediction methods (Ramzi, Nub, Skull) are based on anecdotal observations and have not been scientifically validated. DIY methods and traditional calendars are for entertainment purposes only. For definitive results, always consult your healthcare provider about medically validated testing options.
