Calculate Your Due Date | Pregnancy Tracker

Estimate your due date, track your current week, and visualize baby's growth milestones based on your last menstrual period (LMP).

💡 About This Tool

Get an instant snapshot of your pregnancy. This tool uses standard medical conventions to pinpoint your current trimester, calculate your estimated due date, and show you exactly how far you've come in your journey.

📘 How to Use

• Enter your LMP: Select the first day of your last period from the calendar.
• Customize your cycle: Adjust the cycle length for a more accurate estimate if yours differs from the standard 28 days.
• Track baby's size: See your baby’s approximate size compared to familiar fruits—from a poppy seed to a watermelon.
• Monitor your progress: Use the visual timeline to track your path through all three trimesters.

🧐 Frequently Asked Questions

• How accurate is this estimated due date (EDD)? It is a clinical estimate based on Naegele's Rule. Only about 4% of babies arrive exactly on their due date. Your healthcare provider may update this date following an ultrasound.
• Why start the clock from my last period? Because the exact moment of conception is difficult to determine, medical professionals use the first day of your last period as a consistent, verifiable starting point.
• What if I have an irregular cycle? Input your average cycle length. If your cycle varies significantly, use this date as a general guide until a provider confirms your timeline via a dating scan.

📚 The 40-Week Math

While we often refer to pregnancy as lasting "9 months," a full-term pregnancy is actually 40 weeks (280 days). Since most calendar months are longer than four weeks, your journey actually spans approximately nine months and one week.