Week 40 of pregnancy — 3rd trimester. Baby is the size of a watermelon 🍉, approximately 51.8cm long and weighing 3.46 kg. Due date week! Average birth weight ~3.4kg. Ready for the world. 100% of the 40-week journey complete, 0 weeks remaining.
PREGNANCY WEEK 40 — 3rd TRIMESTER
🍉
watermelon
baby is about the size of a watermelon
WEEK
40
of 40
LENGTH
51.8cm
crown to rump
WEIGHT
3.46 kg
approximate
0 weeks remaining · Due date week! Average birth weight ~3.4kg. Ready for the world.
WEEK 40 — BABY'S DEVELOPMENT
3RD TRIMESTER · Weeks 27–40
Due date week! Average birth weight ~3.4kg. Ready for the world.
HOW YOU MAY FEEL
Due date! Only 5% born today. Induction discussed if past due. Labour imminent.
WEEK 40 KEY FACTS
Gestational age
Week 40
Trimester
3rd (T3)
Baby length
51.8cm
Baby weight
3.46 kg
Progress
100% complete
Weeks left
0 weeks
What happens at week 40 of pregnancy?
At week 40 of pregnancy (3rd trimester):\n\nBaby development: Due date week! Average birth weight ~3.4kg. Ready for the world.\n\nBaby size: watermelon 🍉\nLength: approximately 51.8cm (crown to rump)\nWeight: approximately 3.46 kg\n\nPregnancy progress: 100% complete (0 weeks remaining)\n\nGestational age is counted from the first day of your last menstrual period (LMP), not from conception. Week 40 begins on day 274 and ends on day 280 from your LMP.
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Pregnancy week 40 · 3rd trimester · Baby size: watermelon 🍉 · 51.8cm · 3.46 kg · Sources: ACOG, WHO fetal growth data