Estimate your baby's due date accurately with our easy-to-use Due Date Calculator. Input your Last Menstrual Period (LMP) or conception date to get your estimated delivery date. A valuable tool for expectant parents to plan and prepare for their new arrival.
Please enter a valid LMP date. It cannot be in the future.
Please enter a valid Conception Date. It cannot be in the future.
How to Use the Due Date Calculator
Choose Calculation Method: Select "Last Menstrual Period" or "Conception Date"
Enter Date: Input your LMP date or conception date using the date picker
Calculate Due Date: Click "Calculate Due Date" to get your estimated delivery date
View Results: See your estimated due date displayed clearly
Clear for New Calculation: Use "Clear" to reset and try different dates
Pregnancy & Due Date Tips
LMP Method: Most common method - adds 280 days (40 weeks) to your last menstrual period
Conception Method: More precise if you know conception date - adds 266 days (38 weeks)
Accuracy: Due dates are estimates - only 5% of babies are born on their exact due date
Normal Range: Full-term delivery is anywhere from 37-42 weeks
Ultrasound Confirmation: Early ultrasounds can provide more accurate dating
Regular Checkups: Always consult with your healthcare provider for personalized care
Preparation Time: Use the due date to plan for maternity leave and baby preparations
Important Pregnancy Information
Medical Disclaimer: This calculator provides estimates only. Always consult your healthcare provider for accurate pregnancy dating and care.
Calculation Methods: LMP method assumes a 28-day cycle with ovulation on day 14. Individual cycles may vary.
Factors Affecting Due Date: Cycle length, ovulation timing, and individual factors can affect actual delivery date.
Professional Care: Regular prenatal care is essential for monitoring pregnancy health and adjusting due date estimates.