Pregnancy Due Date Calculator
Congratulations on your pregnancy! Use our calculator to get an approximate due date for your baby.
Version 0.1
Published on Monday 13 June 2022
Updated on Thursday 7 July 2022
Please note: This calculator is currently in test mode. The content is being professionally reviewed — please use the results with caution.
This is not a medical diagnosis. All calculations are estimates based on averages.
Babyvue: Pregnancy Due Date Calculator
If you want to plan ahead or have just found out you're pregnant, our Pregnancy Due Date Calculator gives you an estimation of when your baby is due.
Gathering information early helps make your pregnancy journey smoother. Use this tool to better understand your timeline — from when to book scans and appointments to when to prepare for maternity leave.
How is my estimated due date (EDD) calculated?
Our calculator uses the date of your last menstrual period (LMP) to estimate when your baby is most likely to be born. Simply enter the first day of your last period.
This tool assumes a standard 28-day cycle and is intended as a guide only. For the most accurate due date, consult your NHS GP, midwife, or healthcare professional.
Are there other ways to calculate my due date?
Yes — depending on how you became pregnant and how much information you have.
Scan
Your NHS dating scan (usually between 10–14 weeks) provides the most accurate due date by measuring the baby via ultrasound.
Conception Date*
Add 266 days to the known conception date (very accurate for IVF pregnancies).
Gestational Age*
Calculate how many weeks pregnant you are by counting days from your LMP to today.
*Coming soon to our Baby Due Date Calculator
How likely am I to give birth on my due date?
Only about 5% of babies are born on their exact due date. Around 90% of pregnancies last between 37 and 42 weeks.
How accurate are due date estimations?
Due dates are estimates. Factors like irregular cycles, ovulation timing, and individual baby growth all play a role. Your due date may be adjusted during your pregnancy based on scans and measurements.
What to do with this information
Use your estimated due date to help plan key appointments and milestones:
- From 6 weeks: Babyvue SneakPeek Gender Test
- 6–14 weeks: Babyvue Early Pregnancy Scan
- 8–10 weeks: First contact with NHS midwife/doctor
- 8–14 weeks: NHS Dating Scan
- From 10 weeks: Babyvue Harmony Baby's Health Test
- 16–22 weeks: Babyvue Gender Scan
- 14–40 weeks: Babyvue Quick Reassurance Scan
- 18–20 weeks: NHS Anomaly Scan
- 24–40 weeks: Babyvue Growth & Presentation Scan
- 24–32 weeks: Babyvue 4D Scan
- 25 weeks: Extra NHS check (first baby)
No matter where you are in your pregnancy, this is a great time to start preparing for your new arrival.
Important Notice
This calculator is for illustrative and educational purposes only. It is not a substitute for professional medical advice. Always consult your doctor, midwife, or healthcare provider for personalised medical guidance.
Happy Baby Bumps
Babyvue is here to make sure you and baby are happy and healthy. To make sure you feel welcomed, reassured, and in safe hands throughout your pregnancy and fertility journey. Here’s what our customers have said about their experience at our Orpington and Dagenham baby scan clinics on Google Reviews.
