Due Date Calculation:
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The Baby Due Date Calculator estimates when your baby is likely to be born based on how many weeks pregnant you are. It uses the standard 280-day pregnancy duration (40 weeks) minus the weeks you've already been pregnant.
The calculator uses the following formula:
Where:
Explanation: The calculation subtracts the time you've already been pregnant from the total expected pregnancy duration.
Details: Knowing your estimated due date helps with pregnancy planning, medical appointments, and preparing for your baby's arrival. It also helps healthcare providers monitor fetal development.
Tips: Enter the current date and how many weeks pregnant you are (0-42 weeks). For best accuracy, use the date of your last menstrual period if known.
Q1: How accurate is this calculator?
A: It provides a general estimate. Only about 5% of women deliver on their exact due date. Most deliver within 2 weeks before or after.
Q2: What if I don't know how many weeks pregnant I am?
A: An ultrasound can provide a more accurate estimate of gestational age. Consult your healthcare provider.
Q3: Why is 40 weeks used as the standard pregnancy length?
A: Pregnancy is typically counted from the first day of the last menstrual period, with ovulation/conception occurring about 2 weeks later.
Q4: Can the due date change?
A: Yes, healthcare providers may adjust the due date based on ultrasound measurements and other factors.
Q5: What if my cycle isn't regular?
A: Women with irregular cycles may need early ultrasound dating for more accurate results.