Due Date Calculator – Estimate Your Baby’s Delivery Date

Our Due Date Calculator helps you estimate your baby’s expected delivery date based on your last menstrual period (LMP) or conception date. Knowing your due date is essential for planning your pregnancy journey and preparing for your baby’s arrival.

How is a Due Date Calculated?

Pregnancy typically lasts about 40 weeks (280 days) from the first day of your last menstrual period. If you know your conception date, your due date is calculated by adding 266 days.

Methods to Calculate Due Date

• LMP Method: Most common method using last period date
• Conception Method: Based on ovulation or fertilization
• Ultrasound: Most accurate in early pregnancy

Why Use a Due Date Calculator?

A due date calculator helps track pregnancy progress, schedule doctor visits, and understand fetal development stages.

Pregnancy Timeline

• First Trimester: Weeks 1–12
• Second Trimester: Weeks 13–26
• Third Trimester: Weeks 27–40

Accuracy of Due Date

Only about 5% of babies are born on the exact due date. It is an estimate and actual delivery may vary.

Factors That Affect Due Date

• Irregular cycles
• Multiple pregnancies
• Health conditions
• First pregnancy vs later pregnancies

Using Other Pregnancy Tools

For better tracking, also use our Pregnancy Calculator and Ovulation Calculator to understand your full fertility and pregnancy timeline.

Tips for Expecting Mothers

• Maintain healthy diet
• Attend regular checkups
• Track baby movements
• Stay active and hydrated

Conclusion

The Due Date Calculator is a simple yet powerful tool to estimate your baby’s arrival. Combine it with other tools and medical advice for the best results.