Pregnancy Due Date Calculator
Calculate your estimated due date using Naegele's rule. Enter your last menstrual period (LMP) to see your due date, current pregnancy week, trimester, and milestone timeline.
Disclaimer
This calculator provides an estimate based on Naegele's rule. Only about 5% of babies are born on their exact due date. Your healthcare provider may adjust your due date based on ultrasound measurements. This tool is for informational purposes only and is not a substitute for professional medical advice.
How to Use
- Enter the first day of your last menstrual period (LMP).
- Click Calculate Due Date.
- View your estimated due date, current week, trimester, and milestone timeline.
About Naegele's Rule
Naegele's rule estimates the due date by adding 280 days (40 weeks) to the first day of the last menstrual period. This is the standard method used by healthcare providers for initial due date estimation. Individual due dates may be adjusted based on ultrasound measurements.
Features
- Estimated due date using Naegele's rule (+280 days)
- Current week and day of pregnancy
- Trimester identification with progress bar
- Key milestone timeline with dates
- 100% private, client-side only
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Disclaimer: This tool is provided as-is for informational and educational purposes only.