Pregnancy Due Date Calculator
Due date and week
Estimated due date
24 Apr 2027
Saturday
- Pregnancy week
- 10 weeks, 0 days
- Trimester
- First
- Days to go
- 210
- Likely conception
- 1 Aug 2026
For general information only. Not medical advice.
How it worksDue date = first day of last period + 280 days, adjusted for cycle length (Naegele’s rule).
FAQs
How is the due date calculated?
By Naegele’s rule: the first day of your last period plus 280 days (40 weeks), adjusted for cycle length.
How accurate is the due date?
Only about 1 in 20 babies arrive on the exact due date. Most are born within 2 weeks either side.
Can an ultrasound change my due date?
Yes. An early ultrasound is often more accurate, and your doctor may update your due date based on it.