Sock Sizing Chart

We offer uncompromised comfort, durability, and fit. The following sock size guide will help you find your perfect sock sized based on your shoe size, from extra small to extra large. Or this quiz.

Men's / Unisex Size Chart

Looking for Women's Sizes or Kids' Sizes?

Men's / Unisex Size Chart
Sock Size Men US Women US* Euro UK
XS 2.5-5 4.5-7 35-38 2.5-4.5
S 5.5-7.5 7.5-9.5 38-40 5-7
M 8-9.5 10-11.5 41-42 7.5-9
L 10-12 12-14 43-45 9.5-11.5
XL 12.5-14.5 46-47 12-14
XXL 15-17 48-50 15-16

Women's Size Chart

Women's Size Chart
Sock Size Women US Men US* Euro UK
S 4.5-7 2.5-5 35-38 2.5-4.5
M 7.5-9.5 5.5-7.5 38-40 5-7
L 10-11.5 8-9.5 41-42 7.5-9

*Our men's-sized sock styles tend to reach a bit higher on the leg compared to the women's sock heights. Just FYI.

Kids' Size Chart

Kids' Size Chart
Sock Size Kids' US Euro UK
S 9-11.5 8-29 8.5-11
M 12-2.5 30-34 11.5-2
L 3-6 35-38 2.5-5.5

Generally, your shoe size is a good indicator of what sock size you will fit. Darn Tough size charts (above) show the sock-shoe size conversion for our men's sock sizes and women's sock sizes, as well as for unisex and kids socks. If you need more help finding the perfect fitting socks, see our article on performance fit or contact our customer service team.

Sock Height

Sock heights are relatively universal. We admit we invented Micro Crew on our own. The below visuals can give you the general idea, and the sock lengths chart will help with specific measurements.

Graphic showing sock heights compared to each other for sock sizing chart help
GIF showing darn tough sock lengths on leg with shoes

Sock Height by Inches

We measure from the heel to the cuff of the sock. A ruler or measuring tape can help you determine where the sock will reach on your leg, but results may vary based on your individual leg length.

Sock Height Chart
Sock Height Men / Unisex Women Kids
No Show Hidden / No Show Invisible 2" 1.75"
No Show Socks / No Show Tab 3.5" 2.75"
1/4 (Quarter) Socks 5.5" 5.5" 4"
Shorty Socks 5.75"
Micro Crew Socks 8.5" 7.5" 6"
Crew Socks 10.5" 8.5" 7.5"
Boot Socks 11" 10.5"
Mid-Calf Socks 12" 12"
Over-the-Calf / Knee High Socks 17" 16.25" 13"

Sock Cushion

Cushion is a padding within the sock created by knit terry loops. The cushioning provides added protection in high impact areas, shock absorption, and extra warmth and comfort.

  1. No Cushion Socks: A thin knit with no lift from terry loops in the socks. Regardless of yarn weight, this is a thin sock.
  2. Cushion Socks: Terry loops underfoot and other areas of the sock, but does not wrap the foot. Our most popular, versatile cushion style.
  3. Full Cushion Socks: The terry loops run the entire length of the sock, or at least up to the cuff, for a full wrap of cushion around the foot and leg.

A few of our Ski & Snowboard socks feature targeted cushioning in the shin that is separate from the foot. In our Work socks category, we also carry socks specifically for steel-toe footwear with extended cushioning in the toe.

Sock Weight

Yarn comes in weights, and while measured in microns, it can make a difference. What you might consider outdoor socks are midweight and higher. For categories like our running socks, skiing socks, and casual socks, ultra-lightweight and lightweight are standard.

  1. Ultra-lightweight Socks: The absolute lowest profile that is nearly a second skin. Even with cushion, these socks are sleek and silky smooth.
  2. Lightweight Socks: The most versatile weight found in practically every sock category. When accompanied with cushion, some consider this weight the most sublime combination we knit.
  3. Midweight Socks: With the outdoors in mind, this is where our hiking socks and ski socks made their name. More natural insulation, and so durable they are a thru-hiker staple.
  4. Heavyweight Socks: Our warmest socks. Always with cushion, if not a full cushion of terry loops, these usually have the highest Merino Wool content of any styles with maximum Merino benefits.

Sock Sizing FAQs

How do you determine sock size?

In order to determine your sock size, first determine what size shoe you wear. Your shoe size will tell you which size you need for your socks. Our sock sizes each fit 2-3 shoe sizes. If you fall in between two of the size categories, size up. For more information, refer to our sock sizing chart.

Are socks one size fits all?

Socks are not one size fits all, but each of our sock sizes does fit a few shoe sizes. Socks will fit people with different sized feet due to their stretch; however, for the best results you want a sock that fits properly. For more information on sizing, refer to our sock sizing chart.

Are sock size and shoe size the same?

Sock size and shoe size are not the same; however, your shoe size will help you determine which sock size you are. For example, if you wear a men’s size 11 shoe, you will want a men’s large sock since the men’s large fits shoe sizes 10-12.

What size socks do I need?

If you’re not sure what size sock you need, first check your shoe size, refer to our sock sizing chart, and then pick the size sock your shoe size correlates with. If you’re in between sizes, we recommend sizing up to the next sock size.

What size socks do I wear?

If you haven’t worn Darn Tough socks before, be sure to check our sock sizing chart and compare your shoe size to our sock sizes (size up if you’re in between sizes). If you have a pair of our socks and you’re not sure what size they are, check the inside of the sock cuff, where we knit the size (e.g. “M” for medium).