How to Choose the Right Sock Size for Men and Women

Choosing the correct sock size is essential for comfort, performance, and foot health. This guide breaks down sock sizing for men and women with clear charts, fit tips, and expert advice.

A well-fitting pair of socks ensures comfort, helps prevent blisters, and supports your foot health, whether you’re choosing athletic, everyday, or dress socks. Here’s a detailed guide, plus essential size charts, to help men and women find their best sock fit.

How to Choose the Right Socks

Know Your Shoe Size: Sock sizes are generally based on shoe sizes. Always review the brand’s specific chart, as unisex sizing can differ worldwide.
Understand Sock Labels: For example, sock labels like “9-11” or “10-13” refer to the sock foot length, not shoe size. Typically, “9-11” fits women’s US shoe sizes 5-10 and men’s US 4-7.5; “10-13” fits men’s US 8-12.5 and women’s 10.5-13.
Match Shape and Use: Different sock lengths and cuts (like no-show, crew, or knee-high) are best for certain shoes and activities.
Check Materials: Find athletic socks in synthetic blends for moisture wicking, or cotton/wool for everyday and winter warmth.

Men’s Sock Size Chart

Sock Size	US Men’s Shoe Size	US Women’s Shoe Size	Euro Shoe Size	UK Shoe Size
Small	4.5 – 6.5	5 – 8	35 – 38	3 – 6
Medium	7.5 – 9.5	9 – 11	39 – 42	7 – 9
Large	10 – 12	12 – 15	43 – 46	9.5 – 11.5
X-Large	13 – 15	16 – 19	47 – 49	12 – 13.5

Check your own shoe size conversion if shopping internationally. If in between sizes, size up for more room or down for a snug fit. Unisex socks generally default to men’s sizing; women may need to adjust accordingly.

Women’s Sock Size Chart

Sock Size	US Women’s Shoe Size	US Men’s Shoe Size	Euro Shoe Size	UK Shoe Size
Small	4.5 – 7	2.5 – 5	35 – 38	2.5 – 4.5
Medium	7.5 – 9.5	5.5 – 7.5	38 – 40	5 – 7
Large	10 – 11.5	8 – 9.5	41 – 42	7.5 – 9

Women’s sizes above US 10 may fit better into men’s or unisex sizing, depending on the brand and style.

Universal and Unisex Sock Sizing

Many brands, especially in athletic socks, use universal sizing:

Sock Size	US Men’s Shoe	US Women’s Shoe	EU Shoe Size
XS	6 – 8	4 – 6	31 – 35
S	8 – 12	6 – 10	34 – 38
M	12 – 15	10 – 13	38 – 42
L	15 – 18	—	42 – 46

Always consult the specific brand sizing guide when available.

Types of Socks by Length

No Show: Hidden in shoes, perfect for summer.
Low Cut: Slightly above or below the ankle.
Ankle: Cover the ankle, ideal for sneakers.
Crew: Up to mid-calf, classic for sports and daily wear.
Knee High: Just below the knee, best for boots or formal attire.

Tips for Best Fit and Comfort

Try socks with the shoes you’ll use them with.
Wash cotton or wool socks before wearing—they can shrink a bit during their first wash.
If socks are bunching or slipping inside your shoe, consider a smaller size.
Performance or compression socks should be fitted precisely, especially around the calf.
Finding the right sock size might seem minor, but it can make a big difference in your day-to-day comfort and foot support. Whether you’re buying for athletic performance, workwear, or casual use, taking the time to understand sizing charts, materials, and fit ensures your socks won’t bunch, slide, or squeeze. Always check the brand’s size guide, consider your shoe type, and when in doubt, try before committing to a bulk purchase. Your feet will thank you.