Pregnancy Week Calculator
Calculate your exact pregnancy week and get personalised milestones, scan dates, and baby development updates.
This page is for general pregnancy planning and date guidance only. It is not medical advice, diagnosis, or treatment. Pregnancy dates are estimates and can change after a scan or advice from your midwife, GP, or maternity team. Always speak to a qualified healthcare professional if you have symptoms, concerns, or questions about your pregnancy.
Calculate Your Due Date
Your Weekly Pregnancy Journey
Knowing exactly which week of pregnancy you are in helps you understand what is happening with your baby's development and what changes you might be experiencing in your own body.
Key UK Milestones
- Booking Appointment: Usually between weeks 8 and 10. This is your first official NHS appointment.
- Dating Scan: Usually happens between weeks 11 and 14. This scan will give you a confirmed estimated due date (EDD).
- Anomaly Scan: Carried out between weeks 18 and 21 to check the physical development of your baby.
Disclaimer: This calculator provides an estimate based on standard medical guidelines (typically calculating 280 days from the first day of the last menstrual period). Every pregnancy is unique. Please consult your midwife or doctor for professional medical advice.