Sock Size Chart: Finding the Right Size
Sock Size Chart: Finding the Right Size
Quick answer: Sock size corresponds to shoe size. With shoe size 42, you need socks in 39-42. Most brands offer size ranges — SOKKS in 35-38, 39-42 and 43-46. For in-between sizes, choose the smaller range since elastane stretches the sock slightly.
International Sock Size Chart
| EU Size | UK | US (Women) | US (Men) | Foot Length (cm) |
|---|---|---|---|---|
| 35-38 | 2.5-5 | 5-7.5 | 3.5-6 | 22-24 cm |
| 39-42 | 5.5-8 | 8-10.5 | 6.5-9 | 24.5-27 cm |
| 43-46 | 8.5-11.5 | 11-13.5 | 9.5-12 | 27.5-30 cm |
How to measure foot length correctly?
Step 1: Stand on a piece of paper (wearing socks you normally wear). Step 2: Mark the longest toe and heel with lines. Step 3: Measure the distance in centimeters. Step 4: Find the matching size range in the chart. Tip: Measure both feet — for most people, one foot is 2-5 mm longer. Always go by the larger foot.
Important: Measure feet in the afternoon. During the day, feet swell up to 4% — feet measured in the morning are smaller than in the afternoon. Since socks are worn all day, the afternoon size is the relevant one.
Between two sizes: Which range to choose?
With shoe size 38 (border between 35-38 and 39-42): Choose the smaller range (35-38). Socks with 3-5% elastane stretch slightly and adapt to the foot. A sock that's too large creates wrinkles — and wrinkles create friction points that lead to blisters.
Exception: For particularly wide feet, choose the larger range. Wide feet need more material in the toe area, even if the length fits in the smaller range. Better a slightly longer sock than one that pinches at the sides.
Why is the correct sock size so important?
Three problems with wrong size: Too large — excess material creates wrinkles, every wrinkle becomes a friction point. The sock slips and deforms in the shoe. Too small — the sock pinches, creates pressure points on the toes and cuts in at the band. The band slips because it's stretched over the entire calf area instead of just encompassing the upper edge. Correct — the sock lies smooth, no wrinkles, no pinching, the band sits without cutting in.
Sock size and shoe type
The sock size stays the same, but the sock thickness must match the shoe. Tight shoes (running shoes, climbing shoes, elegant leather shoes): Choose thinner socks so the shoe doesn't pinch. Wide shoes (hiking boots, winter boots): Thicker socks are possible and desirable. Golden rule: Always try on the shoe with the sock you'll actually wear.
Sock sizes for children
Children's feet grow quickly — check every 3-6 months. The sock size should match the current shoe size, not the one from the last purchase. Socks that are too small can promote toe deformities in children. Socks that are too large slip and increase stumbling risk. Tip: For children, choose one size larger since the sock "grows with them".
Unisex sizes at SOKKS
SOKKS offers all models in three size ranges: 35-38, 39-42 and 43-46. All models are unisex — material, quality and workmanship are identical for all genders. The difference is only in size, not in the product. This simplifies selection and enables partner looks in different sizes with identical design.
Frequently Asked Questions about sock size
Can socks shrink?
Yes. Cotton socks can shrink up to half a size when washed at 60°C+. Bamboo viscose is more dimensionally stable but can also shrink when using the dryer on the highest setting. Recommendation: Wash at maximum 40°C, gentle drying or air drying.
Why do some socks slip?
Three common causes: The sock is too large (too much material has no hold). The band has lost its elasticity (due to age, hot washing or fabric softener). Or the sock is too thin for the shoe (insufficient contact). SOKKS solves this with a wider comfort band with high-quality elastane and midfoot compression.
Can you stretch socks?
Minimally — through the elastane (3-5%), socks adapt slightly to the foot. But socks that need significant stretching are too small. Overloading the elastane causes the sock to lose shape faster and the band to lose its recovery force.
Summary: The 5 most important sizing rules
First: Sock size corresponds to shoe size — no separate measurement needed. Second: For in-between sizes, choose the smaller range — elastane stretches. Third: Measure feet in the afternoon — they're largest then. Fourth: Measure both feet and go by the larger one. Fifth: Always try on the shoe with the sock you'll actually wear. These five rules prevent 95% of all fit problems and ensure socks fit perfectly from day one.
SOKKS Size Consultation
Solving size problems: The most common cases
Problem: Sock slips at the band
Three possible causes: The sock is too large (too much material slips down), the elastane is exhausted (due to age, fabric softener or washing too hot), or the sock has no comfort band (narrow, thin band provides no hold). Solution: Choose correct size, avoid fabric softener, replace when worn out. SOKKS socks with wide comfort band and midfoot compression still fit after 50+ washes.
Problem: Sock cuts in at the band
The sock is too small — the band has to stretch over a larger calf area and creates pressure. Or the band is too narrow and concentrates pressure on a narrow line. Visible marks on the leg after taking off are a warning signal — especially for people with circulation problems or diabetes. Solution: Choose one size larger, look for wide comfort band.
Problem: Sock creates wrinkles in the shoe
The sock is too large — excess material folds together. Every wrinkle becomes a friction point during movement. Particularly problematic during sports, where friction adds up over thousands of steps. Solution: Choose smaller size range. At SOKKS: If you're between 38 and 39, choose 35-38 instead of 39-42.
Problem: Particularly wide feet
Standard sock sizes are based on foot length, not width. People with particularly wide feet (hallux valgus, splayfoot) need more material in the toe area. Solution: Choose the larger size range, even if the length would fit in the smaller one. Better a slightly longer sock than one that pinches at the sides and creates pressure on the big toe joint.
Sock size and fit by occasion
The sock size stays the same, but fit requirements change depending on use. During sports: Tighter fit through midfoot compression so the sock doesn't slip during quick movements. In business: Comfortable fit without cutting in, the band must hold for 10+ hours without leaving marks. At home: Loose fit for maximum comfort, no compression needed.
SOKKS offers the same construction in every size range: midfoot compression for secure fit, wide comfort band that doesn't cut in, and 3-5% elastane for adaptability. This works equally well for sports, business and everyday wear.
When should you check your sock size?
Feet change throughout life. Three occasions to check: First, after weight changes — with more than 10 kg gain or loss, feet can change by half a size. Second, during pregnancy — feet often swell by a full size due to water retention and only partially shrink back after birth. Third, from age 50 — the arch flattens with age, the foot becomes wider and often half a number longer. Anyone who notices that familiar socks suddenly fit differently should re-measure. Regular checking of sock size prevents comfort problems and extends the life of every sock.
SOKKS offers three size ranges: 35-38, 39-42 and 43-46. All models in bamboo viscose and cotton, Oeko-Tex Standard 100 certified, 200-needle knitting density. 4 pairs for €19.90 with 6-month anti-hole guarantee. When unsure about size: Choose the smaller range — elastane adapts. Free shipping from €49. Thousands of verified reviews on Judge.me confirm fit and quality.
