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Baby development

6 weeks pregnant baby size

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

Pregnant woman in soft maternity portrait

At 6 weeks pregnant, your baby is about 0.5 cm / 0.2 in long and weighs around Less than 1 g — comparable in size to a sweet pea. About the size of a sweet pea — heart starts beating this week.

Length

0.5 cm / 0.2 in

Weight

Less than 1 g

Size of

Sweet pea

Week 6 milestones

  • Heart starts to beat at around 90-110 bpm
  • Neural tube closes, becoming the brain and spinal cord
  • Tiny limb buds begin to form
  • Most women confirm pregnancy with a home test around now

Tip for week 6

Morning sickness often starts around week 6. Eat small, frequent meals and stay hydrated.

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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