👶 Gestational Age Calculator

Calculate your current pregnancy week and fetal development stage

Understanding Gestational Age

Gestational age is measured from the first day of your last menstrual period (LMP) to the current date. A full-term pregnancy is typically 40 weeks (280 days).

Pregnancy Trimesters

  • First Trimester: Week 1-12
  • Second Trimester: Week 13-26
  • Third Trimester: Week 27-40+
Note: Gestational age differs from fetal age by approximately 2 weeks, as conception typically occurs around ovulation.