Pregnancy Due Date Calculator

Predict Due Date

28

Standard is 28 days.

Results will appear here

Recent Calculations

No history yet.

About This Tool

The most exciting question in pregnancy: 'When will the baby arrive?' Our Due Date Calculator uses the Naegele's Rule (standard medical method) to predict your Estimated Due Date (EDD). By adding 280 days (40 weeks) to the first day of your last menstrual period, it gives you the target date to mark on your calendar. Knowing your due date is essential for scheduling prenatal care and preparing your home for the new arrival. Understanding your body metrics is the first step toward achieving your health and fitness goals. This calculator uses scientifically validated formulas endorsed by health organizations worldwide, ensuring accuracy you can trust. The results provide personalized insights that help you make informed decisions about your diet, exercise routine, and lifestyle choices. Whether you're trying to lose weight, build muscle, or simply maintain a healthy lifestyle, this tool gives you the data-driven guidance you need. It's perfect for fitness enthusiasts, athletes, nutritionists, and anyone committed to improving their health through measurable, evidence-based approaches. Our algorithms are optimized for performance, ensuring instant results even for complex calculations. We are committed to providing free, high-quality tools to help you be more productive.

How to Use This Tool

1

Enter Dates

Select the first day of your last menstrual period (LMP) on the calendar.

2

Cycle Length

Adjust the average cycle length slider (default is usually 28 days).

3

Calculate

Click to view your estimated due date, conception date, and important trimesters.

4

Track

Use the weekly breakdown to monitor your baby's growth progress.

Key Features

  • Standard Accuracy: Uses the same formula as doctors and midwives.
  • Cycle Adjustment: Allows you to adjust for longer or shorter menstrual cycles.
  • Planning: Essential for maternity leave and hospital planning.

Frequently Asked Questions

How likely is birth on the due date?

Only about 4% of babies are born on the exact due date. Most arrive within the two weeks before or after.

Is data secure?

Yes, all calculations happen in your browser. We do not store any employee data.

Is this tool free?

Yes, completely free to use.