Pregnancy Due Date Calculator
When will your little one arrive?
Use our free pregnancy calculator to estimate your due date, see how many weeks along you are, and discover the ideal window for a 2D, 3D or 4D ultrasound.
Why timing matters
The right scan at the right week
Knowing how far along you are makes choosing your PeekABaby session simple. Each stage of pregnancy offers something different to see.
- 8-14 weeks — confirm the heartbeat and get early reassurance with a Heartbeat or Early Pregnancy scan.
- 15-22 weeks — the ideal window to discover your baby's gender.
- 26-32 weeks — the golden window for crisp 2D, 3D and 4D facial imaging.
- 33+ weeks — still possible for 4D, though booking early is best as space gets cosy.
Understanding your trimesters
A gentle overview of the journey
First trimester
Weeks 1–13. Your baby's major organs and that remarkable heartbeat take shape. A wonderful time for early reassurance.
Second trimester
Weeks 14–27. Movements become noticeable and gender can be seen — often the most comfortable stretch of pregnancy.
Third trimester
Weeks 28–40. Baby fills out with soft, rounded features — the perfect time for stunning 3D and 4D portraits.