17 weeks pregnant: baby is the size of a pear
At 17 weeks, baby is about the size of
a pear
A layer of fat is starting to form under baby's skin.
- Length13 cm (5.1 in)
- Weight140 g (5 oz)
- Trimester2 of 3
Baby is measured from head to bottom (crown to rump) at this stage. These are rounded averages. Your ultrasound is the only real measurement of your baby.
Questions moms ask
How big is a baby at 17 weeks?
At 17 weeks, baby is about the size of a pear: around 13 cm (5.1 in) long from head to bottom (crown to rump), and weighs about 140 g (5 oz). Every baby grows at their own pace.
What trimester is 17 weeks?
17 weeks is in the second trimester.
How many months pregnant is 17 weeks?
Roughly month 4 of 9.
Related tools
This page gives estimates, not medical advice. If you're worried about your baby's growth, talk to your doctor or midwife.