Pregnancy Due Date Calculator – Find Your Baby’s Estimated Arrival Date
Are you wondering when your baby is due? Use our medically accurate Pregnancy Due Date Calculator to find your estimated due date in just a few seconds. Whether you’re using your last menstrual period (LMP), conception date, IVF transfer date, or ultrasound measurements, our calculator gives you a precise timeline based on real obstetric guidelines.
Pregnancy Due Date Calculator
How the Pregnancy Due Date Calculator Works
Our calculator offers four medically accepted ways to estimate your due date:
1. Last Menstrual Period (LMP)
This is the most common method used by doctors. If you know the first day of your last period, we calculate your due date by adding 280 days (40 weeks).
2. Conception Date
If you know your exact ovulation or conception day, we add 266 days to estimate your baby’s arrival.
3. IVF Transfer Date
For parents who conceived via IVF:
3-day embryo transfer: We add 263 days.
5-day embryo transfer: We add 261 days.
4. Ultrasound Date
Enter the date of your most recent ultrasound and the gestational age (weeks + days) given by your doctor. We subtract that from 280 days to calculate the accurate due date.
Our calculator offers four medically accepted ways to estimate your due date:
1. Last Menstrual Period (LMP)
This is the most common method used by doctors. If you know the first day of your last period, we calculate your due date by adding 280 days (40 weeks).
2. Conception Date
If you know your exact ovulation or conception day, we add 266 days to estimate your baby’s arrival.
3. IVF Transfer Date
For parents who conceived via IVF:
3-day embryo transfer: We add 263 days.
5-day embryo transfer: We add 261 days.
4. Ultrasound Date
Enter the date of your most recent ultrasound and the gestational age (weeks + days) given by your doctor. We subtract that from 280 days to calculate the accurate due date.
Why Use Our Due Date Calculator?
✅ Based on medical standards and OB-GYN practices
✅ 100% free and ad-free
✅ Easy to use and mobile-friendly
✅ Secure — no data is saved or tracked
✅ Ideal for early pregnancy tracking and planning
What Happens After You Get Your Due Date?
Your estimated due date helps guide your prenatal care schedule, milestones, and planning. You can now:
- Schedule your first ultrasound
- Track pregnancy week-by-week
- Prepare for maternity leave or baby shower
- Share your exciting news with loved ones!
Important Note
This tool provides an estimated due date based on standard medical calculations. Only your doctor or midwife can confirm your exact due date through clinical evaluation and imaging.