Fetal Development: Week 27
Size
Cauliflower
Length
9.6 in (24.4 cm)
Weight
1.9 lb (870 g)
Trimester
2nd
You're at the end of the second trimester! Your baby is the size of a cauliflower. The eyes are now open and closing, and sleep-wake cycles are becoming established.
Key milestone: The baby's eyes open and close. The brain's sleep-wake cycles begin. Taste buds are fully developed.
What's happening this week
At week 27, your baby measures 9.6 in (24.4 cm) and weighs approximately 1.9 lb (870 g) — about the size of a Cauliflower. Your baby is growing rapidly and becoming more active. The senses are developing, and movements are becoming stronger. This rapid growth is why tracking fetal development week by week is so exciting for expecting parents.
How to bond this week
Your baby can hear your voice now! Talk, sing, or read aloud. Baby Whispers voice notes complement these moments by arriving every morning like a little hello from your little one.
Common questions about fetal development at week 27
Parents at week 27 often ask how their baby is developing and what to expect at the next prenatal visit. Your healthcare provider will monitor growth through fundal height measurements and ultrasounds. Meanwhile, tracking fetal development week by week helps you understand the incredible transformations happening inside.
Looking ahead: what changes at week 28
Next week, your baby's development continues as they grow larger and more complex. Each week builds on the last, and the changes you're noticing now are preparing your baby for the milestones ahead. Baby Whispers evolves with each week too — our daily voice notes reflect your baby's changing world.
Prenatal Care at Week 27
Depending on where you are in your pregnancy, your prenatal appointments will focus on different aspects of care. Mid-pregnancy appointments include the anatomy scan (around 18-22 weeks), glucose screening, and monitoring your baby's growth through fundal height measurements. This is also when you may learn your baby's sex.
Your baby at week 27 — the size of a Cauliflower — is developing exactly as expected. Tracking fetal development week by week helps you feel connected to the incredible process unfolding inside you.
Hear your baby's voice at week 27
Imagine waking up to a voice note that sounds like your Cauliflower-sized little one.
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