40 weeks pregnant: baby is the size of a small pumpkin
At 40 weeks, baby is about the size of
a small pumpkin
It's your due date week! Only about 1 in 20 babies arrive exactly on the due date.
- Length51.2 cm (20.2 in)
- Weight3.5 kg (7 lb 11 oz)
- Trimester3 of 3
Baby is measured from head to heel 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 40 weeks?
At 40 weeks, baby is about the size of a small pumpkin: around 51.2 cm (20.2 in) long from head to heel, and weighs about 3.5 kg (7 lb 11 oz). Every baby grows at their own pace.
What trimester is 40 weeks?
40 weeks is in the third trimester.
How many months pregnant is 40 weeks?
Roughly month 9 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.