Due Date Calculator
When is your baby due?
A calm, private estimate. Pick the method that fits you — results appear instantly. No account, no email, no popups.
Most people have a 28-day cycle.
Estimated due date
Thursday, May 27, 2027
About 279 days to go
You are
0 weeks 0 days pregnant
First trimesterYour Pregnancy Timeline
You're in your first trimester · 0 weeks 0 days
1st Trimester
From Aug 20 to Nov 18
2nd Trimester
From Nov 19 to Mar 3
3rd Trimester
From Mar 4 to May 27
This week your baby is about the size of a poppy seed.
Week 1 is counted from the first day of your last period, so pregnancy has not yet begun. Your body is preparing to release an egg later this cycle.
Key dates ahead
- End of first trimester (week 13)Nov 19, 2026
- Anatomy scan window (weeks 18–22)Dec 24, 2026 – Jan 21, 2027
- Third trimester starts (week 28)Mar 4, 2027
- Full term (week 37)May 6, 2027
Bookmark it — the page updates each time you return.
This is an estimate for information only — only about 1 in 20 babies arrive on their due date. Always confirm dates with your midwife or doctor.
How many weeks am I?
Enter your due date or last period for weeks and days.
Ovulation calculator
Estimate your fertile window and ovulation date.
Trimester calculator
See exact date ranges for each trimester.
IVF calculators
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Week-by-week guide
Fruit-size comparisons and what happens each week.