posted 9th November 2026
When Is the Best Time for a Gender Reveal Scan?
Finding out whether you're having a boy or a girl can be one of the most exciting moments of pregnancy. Whether you have been guessing for weeks or are planning a special surprise for your family, a gender reveal scan can be a lovely way to celebrate your growing baby.
But when is the best time to book? Is 16 weeks too early, or is it better to wait a little longer?
At Daisyscan, we understand how special this milestone can be. Here's what to know about timing your gender reveal scan and making the most of your appointment.
When can you find out your baby's sex by ultrasound?
For many parents, a private gender scan becomes an option from around 16 weeks of pregnancy.
By this stage, the external genitalia have developed sufficiently that it may be possible to identify the baby's sex on ultrasound. However, visibility depends on several factors, particularly the baby's position and whether the sonographer can obtain a clear view.
A result cannot be guaranteed at every appointment, even when you have reached 16 weeks.
If finding out is especially important to you, it's worth discussing the clinic's approach to inconclusive views before booking.
Is 16 weeks too early for a gender scan?
Not necessarily. Some parents are able to find out at 16 weeks, and this can be an exciting point in pregnancy to share the news.
However, at 16 weeks, the baby's position may make it difficult to obtain a clear view. The baby may have their legs together, be facing away or move into a position that makes the relevant area difficult to see.
If you are hoping to find out as early as possible, a scan around 16 weeks may be suitable, provided you understand that the result depends on what can be visualised.
At Daisyscan, there is also the option to have an Early Gender Blood Test; available from just 6 weeks into pregnancy, this simple test uses a quick blood sample from the mother to deliver results with 99% accuracy.
Is it better to wait until 20 weeks?
Some parents prefer to wait until later in pregnancy.
As your baby grows, it may be possible to obtain a clearer view, although this is never guaranteed. The baby's position remains an important factor at any stage.
The NHS anomaly scan is usually offered between 18 and 21 weeks. Its main purpose is to examine the baby's anatomy and screen for a range of physical conditions, rather than to provide a gender reveal experience.
If you want to find out your baby's sex, check your local maternity service's policy. You may also choose a separate private gender scan, depending on your preferences.
What can affect the accuracy of a gender scan?
A gender scan uses ultrasound to assess the baby's visible physical characteristics. The result depends on the quality of the image and whether the relevant anatomy can be seen clearly.
Factors that can affect visibility include:
- Your baby's position: Legs together or a baby facing away can make the view difficult.
- Movement: Your baby may move during the appointment, changing what can be seen.
- Stage of pregnancy: The stage of development can affect how clearly the relevant anatomy is visualised.
- Image quality: The quality of the ultrasound image can influence how confidently the features can be assessed.
A responsible sonographer should explain when a view is unclear rather than make a claim that cannot be supported by the images.
Can a gender scan be wrong?
Although ultrasound can be very accurate when the relevant anatomy is clearly visible, mistakes can happen.
The baby's position, image quality and the stage of pregnancy can all affect the result. No scan should be presented as infallible.
If you are booking a scan as part of a gender reveal celebration, remember that the experience is intended to be enjoyable, but the result depends on what can actually be seen.
How should you prepare for your gender reveal scan?
A little preparation can help you enjoy the experience.
Before your appointment:
- Check how many weeks pregnant you need to be for the scan you want.
- Ask whether the clinic has a policy for inconclusive results or repeat appointments.
- Decide whether you want to find out during the scan or have the result kept secret.
- Check whether your partner, children or other family members can attend.
- Allow enough time so you don't feel rushed.
Follow the clinic's specific appointment instructions. You do not need to follow internet suggestions about eating certain foods or drinking sugary drinks to make your baby move.
What if your baby won't show?
Sometimes a baby simply isn't in a suitable position.
Your sonographer may suggest changing position, having a short walk or allowing some time for your baby to move. Even then, it may not be possible to obtain a clear view; in which case a rescheduled appointment may be arranged.
It is better to leave with an honest explanation than to receive a result based on an unclear image.
Make your gender reveal a special memory with Daisyscan
For many families, finding out their baby's sex is a milestone they will always remember.
Whether you want a quiet moment with your partner or a special experience to share with family, a private gender reveal scan can make the occasion feel personal.
At Daisyscan, our qualified midwife sonographers provide a friendly, welcoming experience and explain what can be seen during your appointment.
Ready to find out?
If you're approaching 16 weeks or are further along in your pregnancy, explore Daisyscan's gender reveal scan options and check the recommended booking stage.
Click here to find out more about Daisyscan's Gender Scans