Size 1.5C: the kids’ shoe size explained

A size 1.5C fits a foot of 9.1 to 9.5 cm (3.58 to 3.75 in): UK 1–1.5 and EU 16–16.5 by the standard size tables, a toddler size.

The median child’s foot reaches the middle of a 1.5C at about 6 months and stays in it for about 1 month, in the US Consumer Product Safety Commission’s survey of children.

Measure your child’s foot

Where 1.5C sits

0C · 8.25 cm10C · 16.7 cm13.5C · 19.7 cm
Toddler sizes end at 10C on most brands’ charts; little-kid sizes run on to 3Y. After 13.5C the count starts again at 1Y. A 1.5C lasts the median child about 1 month: measure again before then. Sizes by age.

After 1.5C: the next sizes

The next size, 2C, fits 4.2 mm more foot, up to 9.95 cm. Around the age a 1.5C is outgrown the median child’s foot grows about 2.9 mm a month, so it fills a 2C about 1 month later.

SizeFoot (cm)UKEUOutgrown at
1.5C9.1–9.51–1.516–16.5about 6 months
2C9.5–9.951.5–216.5–17about 8 months
2.5C9.95–10.42–2.517–18about 9 months

Outgrown at: when the median child’s foot reaches the top of the size, girls and boys together. Half of children get there sooner.

6 brands don’t make a 1.5C

Their kids’ charts skip it (most toddler charts print whole sizes only). For a foot that fills a 1.5C, up to 9.5 cm, their own charts give:

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Sizes for

1.5C in every system

System1.5C
Foot length (cm)9.1–9.5
Foot length (in)3.58–3.75
UK1–1.5
EU16–16.5
Japan (cm)9.5–10
Mondopoint (mm)95–100

From the standard size tables; where the foot range spans more than one size, the first and last are shown.

Size tables checked 2026-10-23; ages from the CPSC children’s survey (Snyder et al., 1977, via NIST AnthroKids), median of girls and boys; brand sizes from each brand’s own chart, linked above. An estimate to help you choose: fit varies by brand and model. Not medical advice.