Health & Lifestyle Calculators
Pregnancy Calculator
Calculate your estimated due date, current pregnancy week, trimester, and key milestones. Supports LMP, conception date, IVF transfer, and ultrasound methods.
Calculation Method
Date Details
Estimated Due Date
Thursday, May 6, 2027
10w 0d pregnant · 210 days to go
Trimester
1
First Trimester (Weeks 1–12)
Conception Date
Aug 13, 2026
Key Milestones
Positive Test
Aug 27, 2026 · Week 4
Heartbeat Detected
Sep 10, 2026 · Week 6
End of 1st Trimester
Oct 29, 2026 · Week 13
Anatomy Scan
Dec 17, 2026 · Week 20
Viability Milestone
Jan 14, 2027 · Week 24
End of 2nd Trimester
Feb 4, 2027 · Week 27
Full Term
Apr 15, 2027 · Week 37
Due Date
May 6, 2027 · Week 40
How is the due date calculated?
The most common method is Naegele's Rule: add 280 days (40 weeks) to the first day of your last menstrual period (LMP). This assumes a regular 28-day cycle with ovulation on day 14. For IVF, conception, or ultrasound-based calculations, the tool adjusts accordingly.
Pregnancy Trimesters
- First Trimester: Weeks 1–12 — Rapid development; highest miscarriage risk.
- Second Trimester: Weeks 13–26 — Often called the "golden period"; anatomy scan at week 20.
- Third Trimester: Weeks 27–40 — Baby gains weight and prepares for birth.
Important disclaimer
This calculator provides an estimate only. Only ~5% of babies are born on their exact due date. Your healthcare provider may adjust your due date based on ultrasound measurements and other factors. Always consult your OB/GYN or midwife.
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