Use LMP for regular cycles
If you know the first day of your last period and your cycles are fairly regular, LMP dating is a simple starting point.
Pregnancy calculator
Pregnancy Due DateCalculator
Estimate your due date, pregnancy week, trimester, and next milestone using your last period, IVF transfer date, or ultrasound dating.
This calculator supports cycle-aware LMP dating, IVF transfer dates for day 3, day 5, and day 6 embryos, and ultrasound dating in weeks and days. It gives an estimate only. Your doctor may revise the due date after an ultrasound or based on your clinical history.
Calculate your pregnancy timeline
Choose the date you know best. IVF transfer and ultrasound inputs can give a more relevant estimate for many fertility patients.
Enter your date details to see your estimated pregnancy timeline.
Pregnant after fertility treatment or unsure about your dates? A Pluro specialist can help plan the right scan and follow-up.
Guide
Which pregnancy date should you use?
Use IVF transfer for fertility treatment
For IVF pregnancies, embryo transfer date and embryo age usually make the estimate more relevant than cycle length.
Use ultrasound when your doctor dates the pregnancy
If a scan report gives gestational age in weeks and days, ultrasound dating can help align the timeline with clinical dating.
What it estimates
Due date, current pregnancy age, trimester, likely conception date, and estimated LMP.
What can shift results
Irregular cycles, uncertain dates, scan findings, and clinical history can change dating decisions.
When to ask a doctor
Ask your doctor if you have pain, bleeding, fertility treatment history, or uncertainty about dates.
Common questions
Pregnancy calculator FAQs
How does a pregnancy due date calculator work?
A due date calculator estimates 40 weeks of pregnancy from the first day of the last menstrual period, or adjusts the timeline using IVF transfer or ultrasound dating inputs.
Is the due date exact?
No. The result is an estimate. Your doctor may revise the date after ultrasound dating, especially if cycles are irregular or the last period date is uncertain.
Why is IVF transfer date useful?
IVF dating can be more precise because the embryo transfer date and embryo age are known. The calculator adjusts the due date for day 3, day 5, or day 6 embryo transfer.
When should I book my first pregnancy scan?
Scan timing depends on your history, symptoms, and treatment plan. If you conceived through fertility treatment, ask your clinic when to schedule the first scan and follow-up.
Next steps
Plan pregnancy care with Pluro
If you conceived through fertility treatment or want clarity on scan timing, connect with a Pluro centre for personalised follow-up.