Third trimester

Week 30: Three quarters there

You’re 30 weeks pregnant — about 10 weeks to go. Your baby is roughly the size of a large cabbage.

30 of 40 weeks

Size of

a large cabbage

Length

39.9 cm

15.7 in · head to heel

Weight

1.32 kg

46.5 oz

Your baby this week

Your baby’s brain is developing the grooves and wrinkles that give it more surface area. The soft lanugo hair starts to disappear as fat takes over temperature regulation.

Your body & how you might feel

You’re three-quarters of the way there. Fatigue and mood swings can return, and finding a comfortable position is getting trickier.

Common symptoms at week 30

  • Fatigue
  • Mood swings
  • Heartburn
  • Swollen feet

This week’s tip: Be kind to your energy levels — rest when you can and lower the bar on non-essential tasks. You’re doing a lot.

A gentle reminder: This is an estimate, not medical advice. Dates and figures are general guidance — every pregnancy is different. Your healthcare provider’s assessment, especially from an early ultrasound, always takes priority. Always speak with your provider about your pregnancy.

Week 30 FAQs

How big is the baby at 30 weeks?

At 30 weeks pregnant, your baby is roughly the size of a large cabbage, about 39.9 cm (15.7 in) long and around 1.32 kg. These are typical averages — every baby grows at its own pace.

How many months is 30 weeks pregnant?

30 weeks pregnant is about 7 months, in the third trimester, with about 10 weeks to go until your due date.

What are common symptoms at 30 weeks?

Common experiences around week 30 include fatigue, mood swings, heartburn, swollen feet. Symptoms vary widely — contact your provider if anything worries you.