Due Date Calculation Formula:
| From: | To: |
The Due Date Calculator By Weeks Gestation estimates the expected delivery date based on current gestational age. It uses the standard calculation method to project when a pregnancy will reach full term at 40 weeks.
The calculator uses the due date calculation formula:
Where:
Explanation: The calculation determines how many weeks remain until full term (40 weeks) and converts this to days to project the estimated delivery date.
Details: Accurate due date estimation is crucial for prenatal care planning, monitoring fetal development, scheduling important tests, and preparing for delivery. It helps healthcare providers track pregnancy progress and identify potential complications.
Tips: Enter the current date (or today's date) and the current gestational age in weeks. Gestational weeks should be between 0 and 40 weeks. The calculator will project the estimated due date when the pregnancy reaches 40 weeks gestation.
Q1: How accurate is this due date calculation?
A: This calculation provides an estimate based on standard 40-week pregnancy duration. Actual delivery dates may vary by ±2 weeks from the estimated due date.
Q2: What if I know my conception date?
A: For more precise dating, ultrasound measurements in early pregnancy are the most accurate method for determining gestational age and due date.
Q3: Why use 40 weeks as full term?
A: 40 weeks is the standard duration for full-term pregnancy, though normal pregnancies can range from 37 to 42 weeks.
Q4: Can gestational age be in decimal weeks?
A: Yes, you can enter gestational age with decimal precision (e.g., 12.5 weeks) for more accurate calculations.
Q5: Should this replace medical professional assessment?
A: No, this calculator is for educational purposes only. Always consult with healthcare providers for official due date determination and prenatal care.