Find how far along you are in weeks and which trimester you are in.
Gestational age counts the days since the first day of the last menstrual period, converted into completed weeks. Pregnancy is roughly forty weeks, with trimesters beginning at week one and at weeks fourteen and twenty-seven. Weeks of pregnancy are the common language of prenatal milestones and screening schedules, so converting a calendar date into weeks makes appointments easier to follow.
Pregnancy Week Tracker
Weeks pregnant = days since the last period / 7; trimesters split at weeks 13 and 27
Weeks pregnant = days since the last period / 7; trimesters split at weeks 13 and 27 Gestational age counts the days since the first day of the last menstrual period, converted into completed weeks. Pregnancy is roughly forty weeks, with trimesters beginning at week one and at weeks fourteen and twenty-seven.
Weeks of pregnancy are the common language of prenatal milestones and screening schedules, so converting a calendar date into weeks makes appointments easier to follow.
This calculator takes 6 inputs: LMP year, LMP month, LMP day, Today's year, Today's month, Today's day. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.