Size Guides | M&S

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Baby body measurements

These measurements are body size not garment size. Please measure your child to determine which age group they sit with and then buy the clothes size accordingly.

Baby
Age (years)	Prem Baby	Prem Baby	Early Baby	Tiny	Newborn	1 Month	0-3 Months	0-6 Months	3-6 Months	6-9 Months	6-12 Months	9-12 Months	12-18 Months	18-24 Months	1½-2 Years	2-3 Years	18-36 Months
Weight	3lbs	4lbs	5lbs	6lbs 3oz	7lbs	10lbs	13lbs 4oz	17lbs 10oz	17lbs 10oz	19lbs 13oz	22lbs	22lbs	24lbs 4oz	27lbs 9oz	27lbs 9oz	32lbs	32lbs
Height	16¼in	17in	17¾in	19in	19¾in	21¼in	24½in	27¼in	27¼in	28in¼in	30in	30in	32¾in	35½in	35½in	38½in	38½in