Pregnancy Due Date Calculator

Calculate your estimated due date and see your complete pregnancy timeline and milestones.

First Day of Last Menstrual Period

Average Cycle Length

How to use

LMP method: Enter the first day of your last menstrual period — adds 280 days (40 weeks) adjusted for cycle length.
Conception method: Enter your approximate conception date — adds 266 days (38 weeks).
Ultrasound method: Enter the date of your scan and how many weeks/days pregnant you were at the time.
The timeline shows key milestones with dates — passed milestones are highlighted.
Your current pregnancy week and trimester update automatically.
Due dates are estimates — normal delivery ranges from 37–42 weeks.