When Do You Find Out the Gender of Your Baby?
The moment you learn your baby’s gender can make the whole pregnancy feel real. It’s one of the most exciting milestones for expecting parents. The good news: you may not have to wait as long as you think.
There isn’t one single week when everyone finds out. The timing depends on which method you use. Some parents learn as early as 7 weeks with a simple blood test. Others wait for the anatomy scan at 18 to 20 weeks. This guide walks you through every option, when each one works, and how accurate it is — so you can choose what’s right for your family.
Quick answer: when can you find out baby gender?
Here’s the fast version, by method:
- At-home or in-clinic blood test: as early as 7 weeks
- NIPT (clinical blood screen): around 10 weeks
- Ultrasound (with us at A Date With Baby): from 16 weeks
- Standard anatomy ultrasound (through your doctor): 18 to 20 weeks
So the earliest you can find out your baby’s gender is about 7 weeks with a blood test. Most people find out later, at the 18-to-20-week anatomy scan, because that’s part of routine prenatal care.
In months, that’s roughly 2 months for an early blood test, 4 months at 16 weeks, and about 4.5 to 5 months at the standard scan.
Gender determination methods compared
Method | Earliest week | Where it happens | Accuracy | Main purpose |
Early gender blood test | ~7 weeks | At home or clinic | ~99% | Baby’s sex |
NIPT (cell-free DNA) | ~10 weeks | Clinic | >99% | Screening + sex |
CVS | 10–13 weeks | Clinic | ~99% | Genetic testing + sex |
Amniocentesis | 15–20 weeks | Clinic | ~99% | Genetic testing + sex |
Ultrasound | 16 weeks (with us) / 18–20 standard | Clinic | ~95%+ after 18 weeks | Anatomy + sex |
IVF (sex selection) | Before pregnancy | Clinic | ~100% | Fertility + sex |
How to find out the gender of your baby: every method explained
Early gender blood test (from 7 weeks)
An early gender blood test is the fastest way to learn your baby’s sex. It works by looking for fetal DNA in the mother’s blood. Around 7 weeks, small pieces of the baby’s DNA are already circulating. The test checks for a Y chromosome. If it’s there, you’re having a boy. If it isn’t, you’re having a girl.
Our EarlyReveal gender blood test gives you results at just 7 weeks with 99% accuracy. It’s private, simple, and doesn’t need a doctor’s order.
NIPT (from 10 weeks)
NIPT stands for non-invasive prenatal testing. It’s a clinical cell-free DNA blood screen offered around 10 weeks. Its main job is to screen for chromosomal conditions like Down syndrome. Learning the baby’s sex is a bonus feature, not the goal. NIPT needs an in-office blood draw and isn’t always covered.
CVS (10 to 13 weeks)
Chorionic villus sampling (CVS) takes a small sample of placenta tissue to check for genetic conditions. Because it reads the baby’s genes, it can also reveal the sex. CVS is usually only offered to parents at higher risk, since it carries a small chance of miscarriage.
Amniocentesis (15 to 20 weeks)
Amniocentesis tests a small sample of amniotic fluid for genetic conditions. It can also confirm the baby’s sex with high accuracy. Like CVS, it’s invasive and usually reserved for medical reasons, not just curiosity.
Ultrasound (16 weeks with us, 18 to 20 standard)
An ultrasound uses sound waves to create an image of your baby. A sonographer can often see the baby’s genitals and tell you the sex. Most doctors schedule the anatomy scan at 18 to 20 weeks. At A Date With Baby, we can check gender from 16 weeks — and we don’t need a doctor’s requisition to do it.
IVF with sex selection (before pregnancy)
If you’re going through IVF, embryos can be tested for sex before they’re placed in the uterus. This is close to 100% accurate, but it’s part of fertility treatment, not something most parents seek out just to learn the sex.
When can an ultrasound detect gender?
An ultrasound can usually detect gender from about 16 weeks, and it becomes more reliable the further along you are. Accuracy climbs quickly week by week — it’s much clearer at 13 weeks than at 11, and clearer still after 18 weeks.
So when can you see gender on an ultrasound? The honest answer: a skilled sonographer can often see it at 16 weeks, but the view is sharpest later. A baby’s position matters too. If the baby is turned away or curled up, the sonographer may not get a clear view. That’s why we reschedule you free of charge if we can’t confirm the sex on your first visit.
When is a baby's sex actually formed?
Your baby’s sex is set at conception, decided by the chromosomes. But the body needs time to show it. The genital tubercle — the early structure that becomes the genitals — starts forming around 6 weeks. Boy and girl babies look nearly identical on ultrasound until about 14 weeks. That’s why a blood test (which reads DNA) can reveal sex weeks before an ultrasound (which needs a visible view) can.
When do most people find out the gender?
Most parents find out at the 18-to-20-week anatomy scan, because it’s a standard part of prenatal care in Canada. But “most common” and “earliest” are two different answers. If you’d rather not wait until the halfway point of your pregnancy, an early blood test or an early scan can give you the news months sooner.
Finding out your baby's gender in Canada
Here’s what many parents in Canada don’t realize. Through the public system, an ultrasound is scheduled by your doctor, usually around 18 to 20 weeks, and gender is a secondary detail — not the point of the scan. OHIP doesn’t cover scans done just to learn the sex, and a medical scan needs a requisition from your doctor.
At A Date With Baby, you skip that wait. You don’t need a doctor’s requisition, and we can check your baby’s sex with a blood test from 7 weeks or an ultrasound from 16 weeks. It’s your choice, on your timeline.
Do old wives' tales predict gender?
You’ve probably heard them. A high heart rate means a girl. Carrying low means a boy. Extra cravings, morning sickness, or the shape of your belly all supposedly hint at the answer. These are fun, but there’s no science behind them — they’re right about half the time, the same as a guess. The Chinese gender chart is the same story. If you want a real answer, a blood test, ultrasound, or genetic test is the way to go.
Frequently asked questions
What’s the earliest you can find out the gender of your baby?
The earliest is about 7 weeks, using an early gender blood test that reads fetal DNA. Our EarlyReveal test offers this with 99% accuracy.
Can you find out the gender at 12 weeks?
A blood test (from 7 weeks) or NIPT (from 10 weeks) can already tell you at 12 weeks. An ultrasound this early is less reliable, though accuracy improves fast in the weeks after.
How many weeks pregnant do you have to be to find out the gender?
It depends on the method: 7 weeks for a blood test, 10 for NIPT, and 16 to 20 for an ultrasound.
Do doctors recommend waiting until the ultrasound?
It varies by provider and by you. Finding out the sex is a personal choice. Some parents want to know as early as possible; others are happy to wait for routine care.
Can an early gender test work for twins?
An early blood test can tell you if at least one baby is a boy, but it can’t say how many. To learn each baby’s sex with twins, an ultrasound later in pregnancy usually works best.
Does insurance or OHIP cover finding out the gender?
OHIP covers medical scans ordered by your doctor, where sex is a secondary detail. A scan or test done just to learn the sex is usually paid out of pocket.
Ready to meet your baby?
You don’t have to wait until 18 or 20 weeks to find out. With our EarlyReveal blood test, you can know from 7 weeks with 99% accuracy — no doctor’s requisition needed. Prefer to see your little one? Our gender reveal ultrasound works from 16 weeks, and if your baby isn’t cooperating, we’ll reschedule you for free.
