You can calculate your due date if you know the first day of your last menstrual period (LMP) before you got pregnant. Your due date is 40 weeks after the day you started your last period. This method is a good way to estimate when your baby is due because many women people the day they started their period.
What week am I most likely to give birth?
In order to do this simply count 266 days, or 38 weeks, from the conception date to find your estimated due date. Last Period: This is the most common way to calculate your estimated due date. To calculate, count 40 weeks, or 280 days, from the first day of your last menstrual period.
How do I calculate when my baby will be born?
Most pregnant people—about 80%—deliver sometime between 37 and 42 weeks, and about 11% deliver prematurely. While there aren't any hard and fast rules as to why some people deliver before their due dates or why others deliver later, there are a few things these groups have in common: Multiples.