27 weeks pregnant
Trimester 2 · about 6 months · baby is about the size of a head of cauliflower.
Baby at 27 weeksa head of cauliflower36.6 cm · 875 g
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Your baby this week
Sleep and wake cycles are more regular.
You this week
The last week of the second trimester.
Care this week: Tdap (whooping cough) vaccine is recommended between 27 and 36 weeks in the US.
Frequently asked questions
How many months is 27 weeks pregnant?
27 weeks is about 6.2 months of gestation, counted from the first day of your last period. You are in the second trimester.
How big is a baby at 27 weeks?
Around 36.6 cm long and 875 g, roughly the size of a head of cauliflower. These are averages; individual babies vary.
Not sure which week you're in? The pregnancy calculator works it out from your last period or due date.