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Related tool:
Ovulation & Fertility Calculator
— find your ovulation days and fertile window to plan pregnancy.
Congratulations on your pregnancy! Knowing your expected due date and pregnancy stages helps you prepare optimally for your baby's arrival.
How to Calculate Due Date
Pregnancy is calculated from the first day of your last menstrual period:
Formula:
Due Date = Last Period Date + 280 days (40 weeks)
Pregnancy Stages
- First Trimester (Week 1-12): Major organs form
- Second Trimester (Week 13-26): Growth and development
- Third Trimester (Week 27-40): Preparing for birth
Calculate Your Due Date
Use our Pregnancy Calculator to know your expected due date and track pregnancy stages.