Global Sock Size Conversion Guide: US/EU/UK/JP Chart (2026)

Global Sock Size Conversion Guide: US/EU/UK/JP Chart (2026)

When shopping for socks globally—or running an international apparel business—sizing can quickly become confusing. Does a \"US Sock Size 9–11\" fit a size 9 shoe? How do you convert US to EU sock sizes?

Each region uses its own logic: the US uses a mix of specific sock numbers and shoe sizes, Europe follows shoe sizes directly, and Japan uses precise centimeter measurements.

This complete guide explains how each country’s sizing works and provides easy comparison charts so you can pick the perfect fit, whether for men, women, or kids.

⭐United States (US): The Most Complex System

The US sock system is unique because it often uses a specific \"Sock Number\" scale that is not the same as the shoe size.

The \"Sock Number\" vs. \"Shoe Size\" Confusion

Many US brands (especially for athletic or mass-market socks) use ranges like 9–11 or 10–13.

• Sock Size 9–11 = Standard Women’s Size (Fits US Women’s Shoe 5–10)
• Sock Size 10–13 = Standard Men’s Size (Fits US Men’s Shoe 8–12)

US Men’s Sock Chart

Sock Size Label	US Men\'s Shoe Size	Best For
Medium (M)	6 – 8.5	Smaller feet / Youth
Large (L) / 10–13	8 – 12	Most Common Size
XL / 13–15	12 – 15+	Big & Tall

US Women’s Sock Chart

Sock Size Label	US Women\'s Shoe Size	Best For
Small (S)	4 – 6	Petite feet / Older kids
Medium (M) / 9–11	6 – 10	Most Common Size
Large (L)	10 – 13	Larger feet

🛍️ Shop Recommendation: Looking for the perfect fit?

🇨🇦 Canada (CA): Mirrors the US

Good news for shoppers: Canada uses the exact same system as the United States.

• If you wear a US Men’s 10, you are a Canadian Men’s 10.
• Tip: No conversion is needed for US-Canada cross-border shopping.

🇪🇺 Europe (EU): The Straightforward System

European sock sizes are widely considered the easiest because they correspond directly to EU shoe sizes. There is no separate \"sock number.\"

Common EU Ranges

• EU 35–38: Standard Women / Small Men
• EU 39–42: Unisex / Medium
• EU 43–46: Standard Men
• EU 47–50: Large Feet

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🇬🇧 United Kingdom (UK): The \"Size Down\" Rule

The UK system looks similar to the US system but typically runs one size smaller.

Common UK Sock Ranges

• UK 4–7: Standard Women’s fit
• UK 6–11: Standard Men’s fit (The most common range found in London shops)
• UK 11–14: Large feet

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🇯🇵 Japan (JP): Precision by Centimeter

Japan uses the most logical system: Foot length in centimeters (cm).

To find your size, simply measure your foot from the heel to the tip of your longest toe.

• 22–24 cm: Women
• 24–26 cm: Small Men / Women with larger feet
• 26–28 cm: Standard Men
• 28–30 cm: Large Men

🧸Kids & Toddlers: Global Sock Size Chart

New Section! Buying socks for growing feet is difficult. Use this chart to find the right size for babies, toddlers, and youth.

Age Group	US Shoe Size	EU Shoe Size	UK Shoe Size	Approx. Foot Length
Infant (0-12m)	1 – 4	16 – 19	0 – 3	8 – 11 cm
Toddler (1-4y)	4 – 9	20 – 26	3.5 – 8.5	12 – 16 cm
Little Kid (4-8y)	10 – 3	27 – 34	9 – 2	17 – 21 cm
Big Kid (8-12y)	3 – 7	35 – 39	2.5 – 6	22 – 24 cm

🌍 The Master Chart: Global Sock Size Conversion

Use this universal chart to compare sizes across all major regions quickly. This is ideal for international travelers and e-commerce buyers.

Size Label	US Men	US Women	EU	UK	Japan (cm)
S	—	4 – 6	35 – 37	2 – 4	22 – 24
M	6 – 8.5	6 – 10	38 – 41	5 – 7	24 – 26
L	9 – 12	10 – 13	42 – 46	8 – 11	26 – 28
XL	12 – 15	13+	46 – 50	11 – 14	28 – 30

🧠 Frequently Asked Questions (FAQ)

Final Thoughts

Whether you are buying athletic crew socks, wool hiking socks, or no-show liners, getting the size right ensures comfort and longevity.

• US/Canada: Check if the package says \"Shoe Size\" or \"Sock Size.\"
• Europe: Use your exact shoe size.
• Global: When in doubt, measure your foot in CM.

Ready to find your perfect pair? 👉 [Shop our New Arrivals] - Now that you know your size, find the style that suits you best!

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