Find Your Perfect Fit

Our socks are designed to provide exceptional comfort and fit. Use the size charts below to find your perfect size across our women's, men's, and kids' ranges.

How to Measure Your Foot

For the most accurate fit, measure your foot length:

1. Stand on a piece of paper with your heel against a wall
2. Mark the longest point of your foot on the paper
3. Measure the distance from the wall to the mark in centimeters or inches
4. Compare to your shoe size and use the charts below

Top tip: Measure your feet at the end of the day when they're slightly larger for the most comfortable fit.

Women's Sock Sizes

UK Size	EU Size	US Size	Sock Size
3-5	36-38	5-7	Small
6-8	39-42	8-10	Medium
9-11	43-46	11-13	Large

Men's Sock Sizes

UK Size	EU Size	US Size	Sock Size
6-8	39-42	7-9	Small
9-11	43-46	10-12	Medium
12-14	47-49	13-15	Large

Kids' Sock Sizes

Age Range	UK Shoe Size	EU Size	Sock Size
3-5 years	9-12	27-30	Small
6-8 years	13-2	31-35	Medium
9-12 years	3-6	36-39	Large

Sizing Tips

• Between sizes? We recommend sizing up for a more relaxed fit, especially for thicker winter socks.
• Knee-high socks: Check the calf circumference if specified on the product page for the best fit.
• Compression socks: These should fit snugly - choose your exact size for optimal support.
• Gift buying? Our Medium sizes work for most adults and make great gifts!

Fit & Comfort

All Underfoot socks feature:

• Reinforced heels and toes for durability
• Arch support for all-day comfort
• Seamless toe construction to prevent irritation
• Elasticated cuffs that stay up without being too tight

Still Not Sure?

If you're unsure about sizing or have questions about a specific style, please contact us and we'll be happy to help you find the perfect fit. Remember, you can always exchange for a different size within 30 days - see our Returns Policy for details.