By shoe size, which is based on foot length.

What if I am between sock sizes?

Choose the smaller band for a snug, non-bunching fit.

Home › Socks › foot under 22 cm (US under 4)

Socks size

What size socks for foot under 22 cm (US under 4)?

Recommended size

Kids / XS

If your foot length is foot under 22 cm (US under 4), go with Kids / XS. Sock sizes map to your shoe size, which comes from foot length. A good sock hugs the arch without bunching at the toe or heel.

Size finder — enter your foot length (cm)

Enter your foot length to see your recommended size.

Full socks size chart

Your foot length	Recommended size
foot under 22 cm (US under 4)	Kids / XS
foot 22 to 24 cm (US 4 to 6.5)	S socks
foot 24 to 26.5 cm (US 6.5 to 9)	M socks
foot 26.5 to 28.5 cm (US 9 to 11.5)	L socks
foot 28.5 cm and up (US 11.5 and up)	XL socks

How to measure

Measure heel to longest toe in cm while standing.
Match it to your usual shoe size.
Pick the sock band that covers your shoe size range.

Ready to buy your socks?

Compare top-rated socks in Kids / XS from trusted retailers.

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What changes your size

Between two bands	Size down for a snug athletic fit.
Cushioned / hiking socks	Bulk runs larger — stay true to size.
Compression socks	Follow the brand chart by foot and calf.

FAQ

What size socks for foot under 22 cm (US under 4)?: If your foot length is foot under 22 cm (US under 4), the recommended socks size is Kids / XS.
How are socks sized?: By shoe size, which is based on foot length.
What if I am between sock sizes?: Choose the smaller band for a snug, non-bunching fit.