You can usually find out your baby’s gender sometime between very early blood tests in the first trimester and the routine anatomy scan in the second trimester, depending on the method used.

When Can You Find Out Baby Gender? (Quick Scoop)

Super quick overview

  • Earliest “real” medical clue: specialized blood tests from about 6–10 weeks, depending on the lab and test type.
  • Most common time (for most parents): the mid‑pregnancy ultrasound around 18–22 weeks.
  • Most accurate tests with genetic info (CVS, amnio): usually 10–20 weeks, but done for medical reasons, not just gender.

Main ways to find out (and when)

1. Blood tests (earliest options)

These look for bits of your baby’s DNA in your blood and check for a Y chromosome.

  • Some private or specialty prenatal gender blood tests claim they can tell as early as about 6 weeks of pregnancy, with very high accuracy (often advertised around 99%+).
  • Standard medical non‑invasive prenatal testing (NIPT) , used to screen for chromosomal conditions, can usually report baby’s sex from about 10 weeks, also around 99% accurate.

Think of these as the “earliest sneak peek,” but they’re still medical tests, so they should be done through a reputable provider and mainly for health information, with gender as a bonus.

2. Ultrasound (the classic way)

Even though baby’s sex is determined at conception, the genitals need time to develop enough to see anything on a scan.

  • Around 12–13 weeks: a skilled sonographer might give an early guess, but accuracy is still limited (roughly 50–90% depending on week and baby’s position).
  • Around 14–16 weeks: gender can often be seen more clearly, with reliability increasing from about 14 weeks onward.
  • Around 18–22 weeks: this is the standard anatomy scan , and for most parents this is when they officially find out; accuracy is usually very high when the view is good.

One catch: the baby has to cooperate. If legs are crossed, baby is turned away, or there’s not a clear view, the tech may not be able to say with confidence even at 20 weeks.

3. CVS and amniocentesis (genetic tests)

These tests look directly at your baby’s chromosomes, so they can determine sex very accurately—but they are invasive and carry a small risk.

  • Chorionic villus sampling (CVS): usually done between about 10–13 or 11–14 weeks if there’s a higher risk of genetic issues; it can identify baby’s sex with roughly 98% accuracy.
  • Amniocentesis: typically done between 15–20 weeks, also gives very accurate chromosomal information, including sex.

Because of the risk of complications (including a small miscarriage risk), these are not recommended just to find out gender.

Handy timeline (by method)

[3] [1] [5][1] [5][7][1] [7][1][3] [7][1][3]
Method When you can usually know What to expect
Early private gender blood test From ~6 weeks pregnant Uses mom’s blood to look for fetal DNA; marketed up to ~99.9% accurate.
NIPT (medical blood test) From ~10 weeks Screens for chromosomal conditions, can also show sex with 99%+ accuracy.
Early ultrasound “guess” ~12–14 weeks Possible but less reliable; accuracy improves after 14 weeks.
Standard anatomy scan ~18–22 weeks Most common time parents find out; high accuracy if baby’s position is good.
CVS ~10–14 weeks Genetic test with ~98% accuracy for sex; done for medical reasons.
Amniocentesis ~15–20 weeks Very accurate genetic test; used for high‑risk pregnancies, not gender alone.

A few extra things to keep in mind

  • Your healthcare provider’s advice comes first : timing and which tests make sense can vary if you have specific medical risks or are under specialist care.
  • Ultrasound is mainly for checking baby’s health and anatomy ; gender is a bonus detail, not the main purpose of the scan.
  • At‑home prediction tricks (like baking soda tests, bump shape, etc.) are fun stories but not scientifically reliable.

Imagine one scenario:
Someone does NIPT at 10 weeks and sees baby’s sex in the report, uses that for their private gender reveal, then at 20 weeks the ultrasound lines up with the same result—double confirmation and peace of mind.

Quick TL;DR

  • Earliest: certain blood tests from about 6 weeks (private) or 10 weeks (NIPT) can show baby’s sex with very high accuracy.
  • Most common: 18–22 week anatomy ultrasound is when most parents officially find out.
  • Strong advice: talk with your own doctor or midwife about which option fits your pregnancy and health situation best.

Information gathered from public forums or data available on the internet and portrayed here.