Due Date Calculator
Enter the first day of your last menstrual period to calculate your estimated due date using Naegele's rule. Also see your current pregnancy week, days remaining, and trimester.
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๐คฐ Due Date0
Enter the first day of your last period
About the Due Date
Naegele's rule calculates the estimated due date by adding 280 days (40 weeks) to the first day of your last menstrual period. Approximately 80% of babies are born within 2 weeks of this date.
Pregnancy Stages
- First Trimester (weeks 1-13): Morning sickness, organ formation begins
- Second Trimester (weeks 14-27): Stable period, baby movements begin
- Third Trimester (weeks 28-40): Weight gain, preparing for delivery