Due Date Calculator
Estimate when your baby will arrive. Enter your last menstrual period, conception date, ultrasound date, or IVF transfer date to calculate the expected delivery date along with a safe delivery window.
Your Estimated Due Date
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📅 Safe Delivery Window
| Category | Week Range | Dates |
|---|---|---|
| Early Term | 37-38 weeks | — |
| Full Term ✅ | 39-40 weeks | — |
| Late Term | 41 weeks | — |
| Post Term | 42+ weeks | — |
About 90% of babies are born within 2 weeks of the estimated due date. Only ~4% arrive on the exact date.
🗓️ Important Milestones
| Milestone | Date |
|---|
🍽️ Third Trimester Diet (Pakistani Foods)
As the due date approaches, focus on nutrient-dense foods that support baby's final growth and prepare your body for delivery:
📋 Preparing for Delivery
How is the Due Date Calculated?
From LMP (Naegele's Rule): Due Date = LMP + 280 days (40 weeks). Adjusted for cycle lengths other than 28 days.
From Conception Date: Due Date = Conception + 266 days (38 weeks).
From Ultrasound: The gestational age measured at ultrasound is used to back-calculate the LMP, then add 280 days.
From IVF Transfer: Due Date = Transfer Date + (266 − Embryo Age) days. For a Day 5 embryo: Transfer + 261 days.
What Does "Term" Mean?
Pregnancies are classified by when delivery occurs relative to the due date. Full term (39-40 weeks) is the ideal window for delivery, with the best outcomes for mother and baby. Babies born before 37 weeks are considered preterm and may need special care. Those born after 42 weeks are post-term and doctors may recommend induction.
When Should I Go to the Hospital?
Contact your doctor or go to the hospital if you experience regular contractions (every 5 minutes for 1 hour), your water breaks, you have heavy bleeding, or the baby stops moving. For first-time mothers, early labour can last many hours — your doctor will guide you on timing.