Home
Back
Due Date Calculation Formula:
| From: | To: |
The Pregnant Due Date Calculator estimates the expected delivery date based on current pregnancy week. It uses the standard 40-week pregnancy duration to calculate when the baby is likely to be born.
The calculator uses the due date calculation formula:
Where:
Explanation: The formula calculates how many days remain until the 40-week mark and adds those days to the current date to determine the estimated due date.
Details: Accurate due date estimation is crucial for prenatal care planning, monitoring fetal development, preparing for delivery, and scheduling important medical tests and appointments throughout the pregnancy.
Tips: Enter the current date (or today's date) and your current pregnancy week (0-40 weeks). The calculator will instantly compute your estimated due date. For most accurate results, use the pregnancy week determined by your healthcare provider.
Q1: How accurate is this due date calculator?
A: This calculator provides a general estimate. The most accurate due date is typically determined by early ultrasound dating, which is more precise than calculation-based methods.
Q2: What if I don't know my exact pregnancy week?
A: Consult with your healthcare provider for an accurate assessment. They can determine gestational age through ultrasound measurements and physical examination.
Q3: Why is 40 weeks used as the standard pregnancy duration?
A: 40 weeks is the medically accepted standard for full-term pregnancy, calculated from the first day of the last menstrual period (LMP).
Q4: Can due dates change during pregnancy?
A: Yes, due dates may be adjusted based on ultrasound findings, especially if early ultrasound measurements differ significantly from LMP-based calculations.
Q5: What percentage of babies are born on their exact due date?
A: Only about 5% of babies are born on their exact due date. Most births occur within two weeks before or after the estimated due date.