गर्भावस्था नियत तिथि कैलकुलेटर — बच्चे के जन्म की अनुमानित तिथि (EDD) जानें
नेगेल के नियम (Naegele's Rule) के आधार पर अपनी अंतिम माहवारी (LMP) की तिथि से प्रसव की संभावित तारीख और गर्भावस्था के वर्तमान सप्ताह की गणना करें।
Calculations utilize modern Naegele's formula, adding 280 days (40 completed weeks) to your last period with automatic adjustments for physiological cycle variations from the 28-day baseline.
फॉर्मूला और गणना की विधि
नेगेल का नियम: अंतिम मासिक धर्म के पहले दिन (LMP) में 1 वर्ष जोड़ें, 3 महीने घटाएं, और 7 दिन जोड़ें (कुल 280 दिन या 40 सप्ताह)। यह 28-दिवसीय नियमित मासिक चक्र पर आधारित है।
वेरिएबल परिभाषाएँ और माप इकाइयाँ
LMP on January 1st with Standard 28-Day Cycle
Trimester Chronology and Gestational Accuracy
1st Trimester: Week 1 through Week 13 (organogenesis, embryonic development). 2nd Trimester: Week 14 through Week 27 (rapid anatomical growth). 3rd Trimester: Week 28 through Week 40+ (fetal lung maturation and weight gain).
Clinical studies show that only ~4% to 5% of babies are born precisely on their estimated due date; however, approximately 85% to 90% arrive within a 2-week window (between 37 and 42 completed gestational weeks).
गर्भावस्था नियत तिथि कैलकुलेटर से जुड़े अक्सर पूछे जाने वाले प्रश्न
Why is gestational age counted from the last period instead of conception?
Because the exact date of ovulation and fertilization is rarely known with certainty, while the onset of menstruation is an observable physical milestone.
What if my menstrual cycle is longer than 28 days?
If your cycle is 32 days (4 days longer than average), ovulation occurs 4 days later; the calculator automatically adds 4 days to your estimated due date.
Which is more accurate: LMP due date or first-trimester ultrasound?
A crown-rump length (CRL) measurement during an early first-trimester ultrasound (between 8 and 13 weeks) has an accuracy margin of ±3 to 5 days and is clinically prioritized if it deviates significantly from LMP.
When is a pregnancy considered 'Full Term'?
According to ACOG (American College of Obstetricians and Gynecologists), early term is 37w0d–38w6d, full term is 39w0d–40w6d, and late term is 41w0d–41w6d.
संबंधित ऑनलाइन कैलकुलेटर
गर्भावस्था नियत तिथि कैलकुलेटर के साथ अक्सर संदर्भित अन्य कैलकुलेटर।
Ovulation & Fertility Window कैलकुलेटर
Projects prospective ovulation day, peak 6-day fertile conception window, and upcoming menstrual cycle dates.
उम्र कैलकुलेटर
अपनी जन्म तिथि (Date of Birth) दर्ज करें और आज की तारीख तक अपनी वास्तविक उम्र, कुल महीने, सप्ताह, दिन, घंटे और अगले जन्मदिन की उल्टी गिनती तुरंत देखें।
Date Difference कैलकुलेटर
Exact chronological elapsed duration model calculating absolute calendar days, full weeks, months, years, and total hours between two dates.