All weeks – from 4 to 42

Follow your baby from poppy seed to newborn. See how big your baby is, what is happening in your body, and when the different scans make sense.

Find your week

Checklists you can tick off

Hospital bag, baby essentials, the practical things before the birth and the first weeks with your baby. The lists remember where you got to, can be printed and shared with your partner.

From poppy seed to pumpkin

All weeks in true relative size

This is how your baby grows from week 4 to week 42. The fruits are drawn to the same scale, so you can see the smallest next to the largest – swipe sideways.

Lengths are averages. Up to week 19 the baby is measured from crown to rump; from week 20 from crown to heel – hence the jump at week 20.

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