Calculate Your Baby's Due Date
Our pregnancy calculator helps you estimate your due date and track your pregnancy journey week by week. Simply enter the first day of your last menstrual period (LMP).
Pregnancy Tips
First Trimester Tips
- Take prenatal vitamins with folic acid
- Stay hydrated throughout the day
- Get plenty of rest when feeling fatigued
- Eat small, frequent meals to combat nausea
Second Trimester Tips
- Start sleeping on your side, preferably left side
- Begin pregnancy-safe exercises if approved by doctor
- Start planning your baby registry
- Consider taking a childbirth class
Third Trimester Tips
- Prepare your hospital bag in advance
- Practice relaxation and breathing techniques
- Finalize your birth plan with your healthcare provider
- Set up the nursery before baby arrives
Frequently Asked Questions About Due Dates
How is my due date calculated?
Your due date is calculated by adding 280 days (40 weeks) to the first day of your last menstrual period (LMP). This method is called Naegele's rule and is the standard method used by healthcare providers. It assumes a 28-day menstrual cycle.
How accurate is the due date calculator?
The due date calculator provides an estimate based on the first day of your last period. Only about 5% of babies are born on their exact due date. Most babies are born within a week before or after the estimated due date. For more accuracy, consult with your healthcare provider, especially if you have irregular cycles.
What if I don't know the first day of my last period?
If you don't know the first day of your last period, you might estimate based on when you think you conceived. Alternatively, an early ultrasound (before 20 weeks) can provide the most accurate due date estimation. Consult with your healthcare provider for personalized guidance.
What are trimesters in pregnancy?
Pregnancy is divided into three trimesters, each lasting about 12-13 weeks. The first trimester is weeks 1-12, the second trimester is weeks 13-26, and the third trimester is weeks 27-40. Each trimester is characterized by different developmental milestones and pregnancy symptoms.
When should I schedule my first prenatal visit?
Most healthcare providers recommend scheduling your first prenatal visit as soon as you know you're pregnant, typically around 8 weeks after your last menstrual period. However, if you have a high-risk pregnancy or pre-existing medical conditions, your doctor might want to see you earlier.
Can my due date change during pregnancy?
Yes, your due date might be adjusted based on ultrasound measurements, especially during the first trimester when dating is most accurate. If the ultrasound date differs significantly from the LMP date, your healthcare provider might adjust your due date accordingly.
Pregnancy Due Date Calculator
Due Date Calculator Online helps expecting parents accurately estimate their baby's due date using the first day of the last menstrual period (LMP). Our free tool also provides personalized trimester tracking, a week-by-week pregnancy guide, hospital bag checklists, nutrition tips, and more — all designed for a healthier and more informed pregnancy journey.
Whether you're in your first trimester or just found out you're expecting, our easy-to-use resources and tools are here to support you from day one. Start your journey today and discover everything you need to prepare for your baby's arrival!
Learn more with our helpful guides:Week-by-Week Pregnancy Guide,Pregnancy Diet,Hospital Bag Checklist.
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