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Pregnancy Due Date Calculator

Calculate your pregnancy due date and track important milestones throughout your pregnancy journey. Get detailed information about each trimester and baby development stages.

40 Weeks Average
3 Trimesters
280 Days Gestation

Calculate Your Due Date

Choose your calculation method and enter the required information

📅

Last Menstrual Period

Most common method - enter the first day of your last period

💕

Conception Date

If you know when conception occurred

🏥

Ultrasound Date

Based on ultrasound measurements

Select the first day of your last menstrual period
Enter the estimated or known conception date
Date when the ultrasound was performed
Enter the gestational age as shown on your ultrasound report

Your Due Date

March 15, 2024
You are 20 weeks pregnant 140 days remaining
50% Complete

Important Dates & Milestones

🤱

Conception Date

June 21, 2023
👶

End of 1st Trimester

September 13, 2023
💗

End of 2nd Trimester

December 6, 2023
🍼

Full Term (37 weeks)

February 21, 2024

Current Trimester Information

First Trimester (Weeks 1-12)

The first trimester is crucial for baby's organ development. You may experience morning sickness, fatigue, and breast tenderness.

Key Developments:
  • Neural tube develops into brain and spinal cord
  • Heart begins to beat around week 6
  • Major organs start forming
  • Baby's size: From poppy seed to lime

Second Trimester (Weeks 13-26)

Often called the "golden period" - energy returns, morning sickness typically subsides, and you may start feeling baby's movements.

Key Developments:
  • Gender can be determined via ultrasound
  • Baby develops hearing and can respond to sounds
  • Fingerprints form
  • Baby's size: From lemon to corn cob

Third Trimester (Weeks 27-40)

Baby's major development is complete, now focusing on growth and weight gain. You may experience increased discomfort as baby grows.

Key Developments:
  • Brain development accelerates
  • Lungs mature for breathing
  • Baby positions for birth
  • Baby's size: From cauliflower to watermelon

About Pregnancy Calculators

How Accurate Are Due Dates?

Due dates are estimates. Only about 5% of babies are born on their exact due date. Most babies arrive within 2 weeks before or after the calculated date.

Different Calculation Methods

  • LMP Method: Most common, assumes ovulation 14 days after last period
  • Conception Date: More accurate if you know when conception occurred
  • Ultrasound: Most accurate in first trimester

Important Notes

  • Full-term pregnancy ranges from 37-42 weeks
  • Early ultrasounds are most accurate for dating
  • Irregular cycles may affect LMP accuracy
  • Always consult your healthcare provider

Pregnancy Checklist

✅ Start taking prenatal vitamins
✅ Schedule first prenatal appointment
✅ Avoid alcohol and smoking
✅ Eat a balanced diet
✅ Stay hydrated
✅ Get adequate rest