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Estimate your due date (EDD) from your last period, conception, dating ultrasound, or IVF transfer — with weekly baby fruit size, clinical scan schedules, and Indian maternity delivery budgeting.
28 days is clinical standard — longer cycles naturally shift your due date forward.
Estimates only, not a clinical diagnosis. Dating scans can vary slightly from LMP calculations — always confirm your clinical delivery plan with your consulting obstetrician.
Estimated Due Date (EDD)
Week 20You are 20 weeks 0 days pregnant • Trimester 2 • 140 days to baby arrival
Gestational Age
20w 0d
Trimester
2nd Trimester
Conceived ~
25 May
Countdown
140 days
Approx. 16.4 cm • 300 g
Halfway milestone! Baby has distinct sleep/wake cycles and well-developed fingernails.
Top of uterus reaches level of the navel; mild Braxton Hicks practice tightenings.
11 May – 16 Aug
Vital organogenesis stage — brain, heart, neural tube, and limbs form. Morning nausea & fatigue peak.
17 Aug – 22 Nov
The 'golden period' — energy returns, baby movements (quickening) begin, and the anomaly scan takes place.
23 Nov – 15 Feb
Rapid fetal weight gain, lung maturation, nursery prep, hospital bag readiness, and labor countdown.
Confirms intrauterine pregnancy, heartbeat presence, and single vs twin gestation.
Ultrasound nuchal translucency check and blood test to screen for Down syndrome and chromosomal risks.
Targeted anomaly scan checking brain chambers, heart anatomy, spine, kidneys, and limbs.
Oral glucose tolerance test to detect pregnancy-induced diabetes (crucial for Indian mothers).
Maternal immunization passing antibodies to shield the newborn from neonatal tetanus and pertussis.
Evaluates baby's estimated fetal weight (EFW), amniotic fluid index (AFI), and placental blood flow.
End of 1st Trimester
16 August 2026
Week 13+6 — major organs formed
Viability Milestone
26 October 2026
Week 24 — lungs developing rapidly
End of 2nd Trimester
22 November 2026
Week 27+6 — third trimester begins
Full Term
8 February 2027
Week 39 — baby is full term
Estimated Due Date
15 February 2027
Week 40 — only ~5% arrive exactly on this day
Budget your hospital bill, nursery starter gear, and monthly savings target
Note: Typical Indian hospital packages exclude newborn NICU contingencies, epidural analgesia charges, and doctor special visits. Maintaining a separate ₹50,000 emergency buffer is advisable.
Naegele's rule, irregular cycles, ultrasound precision, IVF dating, maternity leave, and delivery hospital costs.
Standard medical dating uses Naegele's rule: add 280 days (40 weeks) to the first day of your last menstrual period (LMP) and adjust for your cycle length. If dating from conception, 266 days (38 weeks) are added. For ultrasound dating scans, the gestational age measured at the scan is projected forward. For IVF, dating starts from the embryo transfer date minus 3 or 5 days of embryo development.
Only about 4% to 5% of babies arrive on their exact calculated due date. However, about 80% arrive within a 2-week window (between 38 and 42 weeks). A first-trimester dating ultrasound (measuring crown-rump length) is considered the gold standard for clinical precision (±5 days).
If your cycle is regularly 35 days instead of 28, ovulation occurs approximately a week later (day 21), which shifts your due date 7 days later. Adjust the cycle length slider to match your average cycle. For highly irregular cycles, an early ultrasound dating scan is recommended.
Trimester 1 spans from conception/LMP through week 13 (rapid organ formation). Trimester 2 runs from week 14 through week 27 (quickening, anomaly scan, energy returns). Trimester 3 spans week 28 until delivery (fetal weight gain, lung maturation, and labor prep).
In India, standard prenatal care includes: (1) Dating & Viability Scan (weeks 6–8), (2) NT Scan and Dual Marker blood test (weeks 11–13+6) for chromosomal risk, (3) TIFFA / Level-2 Anomaly scan (weeks 18–22) for complete organ anatomy, (4) Oral Glucose Tolerance Test (OGTT, weeks 24–28) for gestational diabetes, (5) Tdap & Tetanus toxoid vaccines (weeks 27–36), and (6) Growth scan with color Doppler (weeks 32–36).
In private tier-1 Indian maternity hospitals (like Apollo Cradle, Cloudnine, Motherhood, Rainbow), normal delivery packages typically range from ₹65,000 to ₹90,000, while C-sections range from ₹1,10,000 to ₹1,75,000+. Standard health insurance policies often require a 9-month to 24-month waiting period for maternity benefits and enforce sublimits (typically ₹50,000 for normal, ₹75,000 for C-section). Always check your corporate policy or individual policy fine print early in pregnancy.
Under the Maternity Benefit (Amendment) Act 2017, female employees in establishments with 10 or more employees are entitled to 26 weeks (approx. 6 months) of fully paid maternity leave for their first two surviving children (up to 8 weeks can be taken before the expected delivery date).