20 weeks pregnant baby size
By Pregora Editorial Team · Updated 2026-05-07 · 3 min read
At 20 weeks pregnant, your baby is about 25.6 cm / 10.1 in long and weighs around 300 g / 10.6 oz — comparable in size to a banana. About as long as a banana — and you're officially halfway through pregnancy.
Length
25.6 cm / 10.1 in
Weight
300 g / 10.6 oz
Size of
Banana
Week 20 milestones
- Anatomy ultrasound (anomaly scan) usually happens this week
- Baby's sex is typically visible on ultrasound now (if you want to know)
- Hair, eyebrows, and lanugo (fine body hair) are growing
- Baby can hear conversations clearly and respond to sounds
Tip for week 20
The 20-week anatomy scan is the most detailed ultrasound of pregnancy — bring a partner and consider asking for printed photos.
Related calculators & pages
Disclaimer: Baby measurements are population averages — individual babies vary. Always consult your healthcare provider for personalised growth assessments based on your ultrasound scans.
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