Pregora
Baby development

18 weeks pregnant baby size

By Pregora Editorial Team · Updated 2026-05-07 · 3 min read

Pregnant woman in soft maternity portrait

At 18 weeks pregnant, your baby is about 14.2 cm / 5.6 in long and weighs around 190 g / 6.7 oz — comparable in size to a bell pepper. About the size of a bell pepper — kicks may start to feel real.

Length

14.2 cm / 5.6 in

Weight

190 g / 6.7 oz

Size of

Bell pepper

Week 18 milestones

  • First-time mothers often feel 'quickening' (first kicks) around now
  • Baby's hearing is developing — they can hear muffled sounds
  • Bones are hardening through ossification
  • Sex organs are clearly visible on ultrasound

Tip for week 18

Talk or sing to baby — they can hear your voice. Studies show babies recognise their mother's voice at birth.

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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