Pregnancy Week Calculator-
Calculate your current pregnancy week and trimester based on the first day of your last menstrual period (LMP).
Why Knowing Your Pregnancy Week Is Important
Pregnancy is measured in weeks starting from the first day of your last menstrual period. Knowing your exact pregnancy week helps doctors plan ultrasounds, blood tests, vaccinations, and monitor your baby’s growth properly.
Pregnancy Trimesters
- First Trimester: Week 1 – Week 12
- Second Trimester: Week 13 – Week 27
- Third Trimester: Week 28 – Delivery
This calculator gives an approximate result. Always confirm important milestones with your gynecologist.