Pregnancy Due Date Calculator
Calculate your estimated due date and see your complete pregnancy timeline and milestones.
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.
About this Pregnancy Due Date
Use this free pregnancy due date calculator to estimate a due date from last menstrual period, conception date, or ultrasound information. It is useful for planning and general reference. No signup is required, and the tool works on phones, tablets, and desktop browsers.