Pregnancy Week Calculation

Pregnancy week calculation is usually made based on the last menstrual period (SAT). This calculation is used to understand and track a woman's pregnancy progress. Here is a simple gestational week calculation method:

Last Menstrual Date (SAT): As the first step, determine the date of your last menstrual period. This date is usually the reference date for the beginning of pregnancy.

Gestational Week Calculation: To calculate gestational week based on SAT, the average gestational age is considered to be 40 weeks. This period usually starts from the first day of the last menstrual period.

For example, if the last menstrual period is January 1, you can find the estimated due date by going forward 40 weeks from January 1.
Estimated Date of Birth (TDT): After 40 weeks, you will find the estimated date of birth. This date represents the date when the baby is likely to be born.

This calculation offers a simple estimate, and a woman's pregnancy length can usually range from 37 to 42 weeks. Therefore, ultrasound and other medical evaluations by the doctor should also be taken into account to determine the exact date of birth.

These tools usually show the estimated gestational age and due date using information such as last menstrual period and/or ovulation date.