What Is a Pregnancy Calculator?
A pregnancy calculator estimates how far along you are, your trimester, conception date, and weekly pregnancy milestones based on your due date.
How Pregnancy Weeks Are Calculated
Pregnancy is typically calculated as 280 days (40 weeks) from the first day of your last menstrual period. Conception usually occurs about 14 days after that date.
Understanding Trimesters
- First Trimester: Week 1–12
- Second Trimester: Week 13–27
- Third Trimester: Week 28–40+
Baby Growth by Week
Each week brings new milestones, including heartbeat detection, movement, lung development, and full-term readiness.
Why Due Date May Change
Ultrasound measurements can adjust your estimated due date depending on fetal growth.
Who Should Use This Calculator?
Expecting mothers, partners, and healthcare planners who want a clear pregnancy timeline and milestone schedule.
Important Note
This calculator provides estimates only. Always consult your healthcare provider for medical guidance.