Pregnancy Due Date Calculator
Last period (LMP) ki date se estimated due date (EDD) nikalein — wahi Naegele's rule jo doctors first ultrasound se pehle use karte hain, cycle-length adjustment ke saath.
⚠️ Yeh tool information-only hai — medical advice nahi. Sirf doctor hi ultrasound se accurate dating aur prenatal care bata sakte hain.
Due date kaise calculate hoti hai
Doctors ka standard starting point Naegele's rule hai — ACOG (American College of Obstetricians and Gynecologists) ke hisaab se EDD = LMP + 280 days (40 weeks):
Yeh counting LMP ke pehle din se hoti hai, conception se nahi — kyunki exact conception date ko pakadna mushkil hai. Cycle 28 se alag hai toh ovulation shift hota hai, isliye (cycle − 28) din ka adjustment lagta hai. Example: LMP 1 March 2026, 28-day cycle → EDD 6 December 2026.
Important: LMP-based estimate ek andaza hai. First-trimester ultrasound (11–14 weeks) dating ke liye zyada accurate maana jaata hai, aur doctor usse EDD revise kar sakte hain. Full-term pregnancy 37–42 weeks ke beech kabhi bhi deliver ho sakti hai — sirf ~5% babies exact due date par hoti hain.
FAQ
Mera cycle irregular hai, kya result sahi hoga?
Irregular cycles mein LMP-based estimate ka bharosa kam hota hai, kyunki ovulation ka time pata nahi hota. Calculator ka result rough guide hi rakhein — dating scan (first-trimester ultrasound) hi final EDD dega. Doctor ko apna cycle pattern zaroor batayein.
Pregnancy week kaise count hota hai?
Gestational age bhi LMP se hi gini jaati hai: aaj ki date − LMP = days, ko 7 se divide karke weeks + days. Isliye "week 4" par hone ka matlab conception ke ~2 week baad hi hai — yeh normal hai, calendar se confusion mat karein.
Trimester kaise divide hote hain?
Common convention: first trimester 0–13 weeks, second 14–27 weeks, third 28 weeks se delivery tak. Har trimester ke tests aur checkups alag hote hain — unka schedule aapke doctor hi batayenge.
EDD ke din hi delivery hogi?
Almost never! EDD sirf ek midpoint estimate hai. Statistics ke hisaab se sirf ~5% babies exact date par paida hoti hain; 37–42 weeks (early term se late term) sab normal range mein aata hai. Agar EDD nikal chuki hai toh doctor hi monitoring karega.
IVF ya known conception date ho toh?
IVF pregnancies mein doctors transfer date se hi dating karte hain (embryo transfer + 263 days for 5-day embryo, roughly) — LMP method un par apply nahi hota. Is case mein apne fertility doctor ka given EDD hi use karein.