Quick answer: if you wear a men's shoe size 12 to 15 or a women's 13 to 15, look for diabetic socks sold in an X-Large size and check the shoe-size range on each style, because it varies. A sock that's too small stretches tight across the toes and the top, which is exactly what diabetic socks are meant to avoid. At Diabetic Sock Club, our men's non-binding ankle socks go up to shoe size 15, and our men's crew and Ultra-Soft socks go up to size 14.
Why sock size matters more when your feet are big
Most socks are made in "one size" or in ranges that top out around a men's 12 or 13. On a bigger foot, the sock has to stretch to fit, and that causes:
- Pressure on the toes, where a too-short sock pulls the toes back and the seam sits on top of them
- A tighter top, because the whole sock is under tension, so it digs in and leaves marks
- Heels that slide under the foot, bunching fabric where you walk
- Faster wear and holes at the toe and heel
For anyone with diabetes, neuropathy or swelling, those are the things you most want to avoid.
Our sizes for big feet
| Sock | Largest size | Fits shoe size |
|---|---|---|
| Men's Non-Binding Ankle Socks | X-Large | Men's 13-15 |
| Men's Non-Binding Crew Socks | X-Large | Men's 12-14 |
| Men's Ultra-Soft Socks | X-Large | Men's 12-14 |
| Men's Compression Socks | X-Large | Men's 12.5-14 |
| Women's Non-Binding Ankle Socks | X-Large | Women's 13-15 |
| Women's Ultra-Soft Socks | X-Large | Women's 13-15 |
| Women's Compression Socks | X-Large | Women's 13-15 |
Always check the size guide on the product page before you order. If you're between sizes, go up. See all our diabetic socks and diabetic compression socks.
What to look for in diabetic socks for big feet
- A real XL or XXL size with a stated shoe-size range that includes yours
- A non-binding top so the sock stays up without squeezing
- A smooth toe seam that sits at the tip of your toes, not across them
- Enough stretch to fit wide feet as well as long ones. If width is your issue, see our guide to crew socks for wide feet.
- A heel that lines up with your heel, not halfway under your foot
Big feet and wide calves
Tall people with big feet often have longer, fuller calves too. If socks dig in higher up the leg, read socks for wide calves and thick ankles. For more sizing help, see our men's diabetic socks size guide and sock size chart.
Frequently asked questions
Do diabetic socks come in size 15?
Yes. Our men's and women's non-binding ankle socks fit shoe sizes 13 to 15, as do our women's Ultra-Soft and compression socks in X-Large.
What size diabetic socks for a size 13 shoe?
For men, X-Large in our crew, ankle and Ultra-Soft socks. For women, X-Large in our ankle, Ultra-Soft and compression socks.
Is it bad to wear socks that are too small?
Yes. Small socks press on the toes and make the top tighter, which can leave marks and rub, especially if you have diabetes or neuropathy.
Sizes as listed on our product pages, September 2026.
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