Baby Due Date Countdown: How Many Weeks to Go?
Enter your due date, or the first day of your last menstrual period, and this pregnancy countdown shows how many weeks and days are left, plus how far along you are.
A typical pregnancy lasts 40 weeks from the first day of the last period, so the due date is 280 days after it. Only about 5% of babies arrive on the exact date, and most are born between 37 and 42 weeks.
Frequently asked questions
How is the due date calculated?
The standard method, Naegele’s rule, adds 280 days (40 weeks) to the first day of your last menstrual period. Your doctor may adjust the date after an ultrasound.
How many weeks pregnant am I?
Pregnancy is counted from the first day of your last period. The tool shows the completed weeks and days based on your due date.
Is this a medical tool?
No. It is a simple countdown for planning and fun. Always follow the advice of your doctor or midwife for medical decisions.