Week 34 of pregnancy
34 Weeks Pregnant
Third trimester
Baby size
About the size of a cantaloupe
45 cm
What's developing
The central nervous system and lungs are maturing. Fingernails now reach the fingertips.
Common symptoms this week
- Blurred vision
- Fatigue
- Swelling
- Pelvic pressure
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 34 weeks?
Baby growth chart
Typical fetal length and weight from week 8 to week 40.
Length
cmWeek 34: 45.0 cm
Weight
gramsWeek 34: 2.15 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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