12 weeks pregnant: baby is the size of a kiwi
At 12 weeks, baby is about the size of
a kiwi
Reflexes are developing. Baby can open and close their fingers.
- Length5.4 cm (2.1 in)
- Weight14 g (0.5 oz)
- Trimester1 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 12 weeks?
At 12 weeks, baby is about the size of a kiwi: around 5.4 cm (2.1 in) long from head to bottom (crown to rump), and weighs about 14 g (0.5 oz). Every baby grows at their own pace.
What trimester is 12 weeks?
12 weeks is in the first trimester.
How many months pregnant is 12 weeks?
Roughly month 3 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.