Pregnancy Due Date Calculator
Calculate your baby's due date, current week of pregnancy, trimester, and key milestones.
Pregnancy Due Date Calculator
Enter your last menstrual period date to calculate your baby's due date, current pregnancy week, trimester, and important milestones.
📅Your Pregnancy Info
The first day of your last period
✨Your Due Date Results
🗓️Pregnancy Timeline
- •Week 6: Heartbeat detected
- •Week 8: Baby's organs forming
- •Week 10–12: First prenatal visit
- •Week 12: NT scan / blood tests
- •Week 16: Baby kicks felt
- •Week 18–20: Anatomy scan (gender!)
- •Week 24: Viability milestone
- •Week 24–28: Glucose screening
- •Week 28: Third trimester begins
- •Week 34–36: Baby settles head-down
- •Week 37: Full term 🎉
- •Week 40: Due date
📋Key Dates
| Milestone | Date | Week |
|---|---|---|
| 🩸 Last Menstrual Period (LMP) | March 2, 2026 | Week 1 |
| 💫 Conception Estimate | March 16, 2026 | ~Week 2 |
| 🌱 End of 1st Trimester | June 1, 2026 | Week 13 |
| 🌸 End of 2nd Trimester | September 7, 2026 | Week 27 |
| ⭐ Full Term Begins | November 16, 2026 | Week 37 |
| 👶 Due Date (EDD) | December 7, 2026 | Week 40 |
💡How Due Date is Calculated
🧮 Naegele's Rule
The most common method for calculating your estimated due date (EDD) is Naegele's Rule:
This assumes a standard 28-day cycle. For longer or shorter cycles, the calculator automatically adjusts by the difference from 28 days.
Only 5% of babies are born on their exact due date — most arrive within 2 weeks before or after.
📏 Pregnancy Weeks Explained
Pregnancy is counted from the first day of your last period, not conception. This adds approximately 2 weeks to the count.
- → Weeks 1–12: 1st trimester — critical organ development
- → Weeks 13–26: 2nd trimester — growth & movement
- → Weeks 27–40: 3rd trimester — final development
- → Week 37+: Full term — safe to deliver
⚕️ This calculator provides estimates based on Naegele's Rule and is for informational purposes only. Due dates can vary based on ultrasound measurements and other factors. Always consult your healthcare provider for medical advice and accurate dating.