Pregnancy Calculator
The Pregnancy Calculator estimates your due date and tracks your pregnancy week-by-week using your last menstrual period or conception date. This due date calculator offers valuable insights into fetal development and helps you plan prenatal care. It’s a reliable tool for expecting mothers who want to monitor each trimester, prepare for delivery, and ensure a healthy pregnancy journey.
Pregnancy Calculator
First Day of Last Menstrual Period (LMP)
Conception Occured
(about two weeks after last menstrual period)
Dating Scan
(between weeks 7 and 12)
to
This scan will help to confirm your baby’s expected delivery date
NIPT Testing
(from week 10)
Screening for Down syndrome and other chromosomal anomalies.
Nuchal Translucency Scan
(approx. 12 weeks to 13.5 weeks)
to
Screening for Down syndrome and a review of baby’s development
Pre-eclampsia screening
(approx. 12 weeks to 13.5 weeks)
to
Detects 90% of pregnant women who will develop pre-eclampsia
Structural Scan
(between week 12 and 16)
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Scan to review baby’s development
Morphology Scan
(between 19 – 20 weeks)
to
Detailed review of your baby’s complex organs
Estimated Due Date (EDD)
Growth Scan
(from 24 weeks)
Checks your baby’s health, position, size and growth
On , you are currently weeks days pregnant.
How does the calculator estimate the due date?
It commonly uses Naegele’s Rule—adding 280 days (40 weeks) to the first day of your last period—though you can also enter other data like conception or ultrasound dates for a more personalized fertility calculator experience.
Why is the due date only an estimate?
Due dates are approximate—only ~5% of babies arrive exactly on that day. Most births occur within two weeks before or after the estimated date. Accuracy improves with early ultrasounds.
Can I use this tool if I conceived via IVF?
Yes! You can use your embryo transfer date and embryo stage to calculate your expected due date, making it an accurate due date calculator for IVF pregnancies too.
What do I get from a week-by-week pregnancy timeline?
Tracking your pregnancy week-by-week reveals milestone insights about your baby’s development and your changing needs, helping you stay prepared and informed.
What if I don’t know my last period date?
No problem—you can use estimates like your ultrasound date or conception date instead. This flexibility ensures the tool remains a reliable fertility calculator even with incomplete cycle info.