Pregnancy due date calculator

Pregnancy Due Date Calculator

Calculate your estimated due date using LMP or IVF details

Calculation Method

First Day of Last Menstrual Period (LMP)

Embryo Transfer Date

Your Estimated Due Date

Estimated Due Date

N/A

(Based on Naegele’s Rule)

Days Pregnant

N/A

Important Milestones

Note: This is an estimate. Only about 5% of babies are born on their exact due date.

Pregnancy Due Date Calculator – Know When Baby Is Coming

A pregnancy due date calculator helps expectant parents know when to expect their baby. Our tool calculates your estimated due date using either your last menstrual period (LMP) or embryo transfer date for IVF pregnancies. While only about 5% of babies are born on their exact due date, this calculator gives you a reliable reference point.

Why use our pregnancy due date calculator?

✅ Calculates due date using both LMP and IVF methods
✅ Shows how far along you are in weeks and days
✅ Free to use – no registration required
✅ Works across devices – desktop, tablet, mobile

How to Use the Due Date Calculator

Select “Last Menstrual Period” or “IVF Embryo Transfer”
Enter the corresponding date
Click “Calculate Due Date”

The pregnancy due date calculator will give you:

Your estimated due date
How many days pregnant you are
Key milestones based on your stage

Understanding Your Due Date

The due date is calculated as 280 days (40 weeks) from the first day of your last menstrual period (LMP). If you had an IVF transfer, we add 266 days from the embryo transfer date (38 weeks).

What if My Due Date Changes?

Early ultrasounds can sometimes change your due date if there’s a significant difference between LMP dating and fetal measurements. Talk to your doctor for confirmation.

Important Notes

Due dates are estimates
Only about 5% of babies arrive exactly on time
Prepare for flexibility – most births occur within two weeks of the due date