convertfig
USUKAU

Children's Shoe Size Chart

Kids' AU 10 (child) = UK 10 (child) = US 10.5 (child) = EU 28 (foot about 17.1 cm).

Try your own numbers

Sizes for
Convert from

Half sizes are fine, for example 9.5.

Assumptions (editable)
cm

A shoe is longer than the foot inside it. The starting allowance is 1.7 cm for men, 1.2 cm for women and 1.5 cm for kids (an editorial figure fitted to the published charts). Leave the box blank to use it.

US kids’ size10.5 (child)
AU10 (child)
UK10 (child)
EU28
Foot length17.1 cm (6.74 in)

Shoe length 18.63 cm (foot 17.1 cm plus 1.5 cm allowance). UK size = shoe length in inches × 3 − 12 (child sizes, restarting at 1 after 13½). EU size = shoe length in cm × 1.5, to the nearest half. US kids’ = UK + ½; AU = UK.

Sizes vary by brand. If you are between sizes, size up or check the brand’s own chart.

Fig. 1 The size in every system.

Every formula is tested against worked examples. How we check

AUUKUSEUFoot (cm)Foot (in)
5 (child)5 (child)5.5 (child)21.512.95.08
5.5 (child)5.5 (child)6 (child)2213.35.24
6 (child)6 (child)6.5 (child)2313.75.41
6.5 (child)6.5 (child)7 (child)23.514.25.58
7 (child)7 (child)7.5 (child)2414.65.74
7.5 (child)7.5 (child)8 (child)25155.91
8 (child)8 (child)8.5 (child)25.515.46.08
8.5 (child)8.5 (child)9 (child)2615.96.24
9 (child)9 (child)9.5 (child)26.516.36.41
9.5 (child)9.5 (child)10 (child)27.516.76.58
10 (child)10 (child)10.5 (child)2817.16.74
10.5 (child)10.5 (child)11 (child)28.517.66.91
11 (child)11 (child)11.5 (child)29187.08
11.5 (child)11.5 (child)12 (child)3018.47.24
12 (child)12 (child)12.5 (child)30.518.87.41
12.5 (child)12.5 (child)13 (child)3119.27.58
13 (child)13 (child)13.5 (child)3219.77.74
13.5 (child)13.5 (child)1 (youth)32.520.17.91
1 (youth)1 (youth)1.5 (youth)3320.58.08
1.5 (youth)1.5 (youth)2 (youth)33.520.98.24
2 (youth)2 (youth)2.5 (youth)34.521.48.41
2.5 (youth)2.5 (youth)3 (youth)3521.88.58
3 (youth)3 (youth)3.5 (youth)35.522.28.74
3.5 (youth)3.5 (youth)4 (youth)3622.68.91
4 (youth)4 (youth)4.5 (youth)3723.19.08
4.5 (youth)4.5 (youth)5 (youth)37.523.59.24
5 (youth)5 (youth)5.5 (youth)3823.99.41
5.5 (youth)5.5 (youth)6 (youth)38.524.39.58
6 (youth)6 (youth)6.5 (youth)39.524.79.74

Fig. 2 Kids' sizes in every system, in half sizes. Built from one rule set (see how it works); brands differ.

Last checked 11/11/2026. Sources: size.ly: International shoe size conversion chart for women and men (foot length, UK, US, EU; one-third inch steps; Paris point about 6.7 mm); Hush Puppies Australia: Shoe size conversion guide (AU women’s match US; AU men’s match UK); Williams Shoes: Size guide (Australian women’s sizes match US sizes, men’s align with UK sizes); Mountfords: Size guide (AU men’s the same as UK; AU women’s the same as US).

Children's Shoe Size Chart: the working

Australian children's sizes follow the UK scale, which runs to 13 and then restarts at 1.

Shoe length 18.63 cm (foot 17.1 cm plus 1.5 cm allowance). UK size = shoe length in inches × 3 − 12 (child sizes, restarting at 1 after 13½). EU size = shoe length in cm × 1.5, to the nearest half. US kids’ = UK + ½; AU = UK.

Common questions

Is this the same in every brand?

No. Sizing is not standardised, so use this as a starting point. If you are between sizes, size up or check the brand’s own chart.

What foot length does it match?

About 17.1 cm.

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