Week 37 of pregnancy
37 Weeks Pregnant
Third trimester
Baby size
About the size of a swiss chard
48.6 cm
What's developing
The baby is considered early term. Practise breathing and sucking motions continue.
Common symptoms this week
- Increased discharge
- Losing the mucus plug
- Backache
- Nesting
This is an estimate for information only — only about 1 in 20 babies arrive on their due date. Always confirm dates with your midwife or doctor.
How big is a baby at 37 weeks?
Baby growth chart
Typical fetal length and weight from week 8 to week 40.
Length
cmWeek 37: 48.6 cm
Weight
gramsWeek 37: 2.86 kg
Typical averages based on Hadlock / ACOG references. Weeks 8–20 use crown–rump length; weeks 21–40 switch to crown–heel — that's the small jump you'll see mid-chart. Real babies vary — your ultrasound is the reliable number for you.55
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