Pregnancy Calculator
Pregnancy Calculator
Estimate your due date, current gestational age, trimester, and milestone timeline.
Estimated due date
Thu, June 10, 2027
Gestational age
0 wks 0 days
Trimester
Trimester 1
0 wks280 days remaining40 wks
Pregnancy Milestones
Dimmer bars are milestones already passed.
| Milestone | Date |
|---|---|
| End of first trimester (13 weeks) | Thu, December 3, 2026 |
| Anatomy scan (18–22 weeks) | Thu, January 21, 2027 |
| Viability (24 weeks) | Thu, February 18, 2027 |
| Third trimester begins (28 weeks) | Thu, March 18, 2027 |
| Early term (37 weeks) | Thu, May 20, 2027 |
| Estimated due date (40 weeks) | Thu, June 10, 2027 |
Conception date: Thu, September 17, 2026
How the dates work
Naegele's rule adds 280 days to the first day of your last period — conception is assumed two weeks in, so a 40-week pregnancy is 38 weeks of fetal age. Ultrasound dating and IVF transfers are more precise because the start point is known. Only about 5% of babies arrive on their due date; full term spans 39 to 41 weeks.