27 Weeks Pregnant
You’re 27 weeks pregnant — in the second trimester, and 13 weeks to go until your due date. Your baby is about the size of a cauliflower this week.
★ Last week of the second trimester.
How big is your baby at 27 weeks?
Size of a
cauliflower
Length
~36.6 cm
Weight
~875 g
Last week your baby was about the size of a lettuce; this week it's grown to roughly a cauliflower.
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 27
The last week of the second trimester. The fetus now sleeps and wakes at regular intervals, may recognise your voice and your partner's, and the brain is very active. The lungs are still immature but capable of functioning with help if birth came early. Taste buds are well-developed. About the size of a large cauliflower.
Your body at 27 weeks
Common symptoms many people notice around week 27 include:
- Regular movement patterns you may start to recognise
- Leg cramps and restless legs
- Shortness of breath
- Braxton Hicks contractions
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 27
- Start noting your baby's active and quiet times
- Magnesium-rich foods may ease leg cramps (check with your provider)
- Begin thinking about antenatal classes
What trimester is 27 weeks?
Week 27 falls in the second 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 second trimester (weeks 14–27) is the stretch many people find most comfortable: early nausea usually fades, energy returns, and the bump becomes visible. The big checkpoint is the mid-pregnancy anatomy scan around week 20, and you'll likely feel the first movements during these weeks.
Frequently asked questions
- How many months is 27 weeks pregnant?
- 27 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 27 weeks?
- At 27 weeks, the baby is about the size of a cauliflower, roughly 36.6 cm and around 875 g. These are averages — healthy babies vary, and your provider tracks your baby's own growth curve at scans.
- What trimester is 27 weeks?
- Week 27 is in the second 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).