30 Weeks Pregnant
You’re 30 weeks pregnant — in the third trimester, and 10 weeks to go until your due date. Your baby is about the size of a cabbage this week.
How big is your baby at 30 weeks?
Size of a
cabbage
Length
~39.9 cm
Weight
~1319 g
Last week your baby was about the size of a butternut squash; this week it's grown to roughly a cabbage.
Sizes are averages from standard fetal-growth references. Every baby grows at its own pace — your provider tracks yours at scans.
Baby development at week 30
The fetus's eyesight continues to develop, though vision will stay blurry for a while after birth. The soft lanugo hair starts to disappear as the brain takes over temperature regulation. Bone marrow is now fully responsible for producing red blood cells. The fetus is getting plumper and stronger. About the size of a cabbage.
Your body at 30 weeks
Common symptoms many people notice around week 30 include:
- Mood shifts and fatigue
- Heartburn
- Trouble sleeping
- Braxton Hicks contractions becoming more noticeable
Symptoms vary enormously from person to person and pregnancy to pregnancy. Not having a symptom on this list is just as normal as having it.
Tips for week 30
- Distinguish Braxton Hicks (irregular, painless) from true labour (regular, intensifying)
- Keep up gentle movement for circulation and mood
- Start preparing your hospital bag list
What trimester is 30 weeks?
Week 30 falls in the third trimester. As a quick map: the first trimester runs weeks 1–13, the second covers weeks 14–27, and the third is week 28 through birth (a due date is set at 40 weeks). Want your own dates? Our Pregnancy Due Date Calculator shows your due date and exactly how far along you are today.
The third trimester (weeks 28–40+) is about growth and getting ready for birth. Prenatal visits become more frequent, the baby gains most of its weight, and you'll watch for the signs of labour. Tiredness and physical discomfort tend to return as the due date approaches.
Frequently asked questions
- How many months is 30 weeks pregnant?
- 30 weeks pregnant is about 7 months. Pregnancy months don't divide evenly into 4-week blocks, so week-to-month conversions are approximate — most providers track pregnancy by week, not month.
- How big is the baby at 30 weeks?
- At 30 weeks, the baby is about the size of a cabbage, roughly 39.9 cm and around 1319 g. These are averages — healthy babies vary, and your provider tracks your baby's own growth curve at scans.
- What trimester is 30 weeks?
- Week 30 is in the third trimester. The first trimester is weeks 1–13, the second is weeks 14–27, and the third is weeks 28 to birth (around week 40).