How is gestational age calculated?

Gestational age measures pregnancy progress starting from the first day of your last menstrual period (LMP).

What are the three trimesters of pregnancy?

1st Trimester: Weeks 1-12; 2nd Trimester: Weeks 13-27; 3rd Trimester: Weeks 28-40+.

Step-by-step practical guides for all tools on tools.shansu.com.

Understand your estimated due date, trimester progression, and key clinical milestones.

Use LMP, conception, or ultrasound dates for precise gestational tracking.