Side-by-Side Comparison
Accessories
Hat Sizes vs. Sock Sizes
Comparing 2 standards across 11 specifications. 11 key differences identified.
Comparing:
Hat Sizes
Sock Sizes
Hat and cap sizes are derived directly from head circumference measured one centimeter above the ears. Sized in traditional fitted fractions (6-1/2 to 8-1/4) and alpha sizes (S to 3XL), the US numerical size represents head diameter in inches calculated by dividing circumference in centimeters by 8.
Sock sizes represent the physical length of the sock foot in inches (e.g., standard Size 9-11 or Size 10-13), mapped directly to US Men's, US Women's, and European shoe sizes to prevent heel slippage and toe constriction.
Specification Comparison Table
11 Parameters| Parameter / Spec | ||
|---|---|---|
|
Governing Standards
|
Headwear Association / Traditional US/UK Sizing Standard | The Hosiery Association / SATRA Footwear Standards |
|
Measurement Location
|
1.0 cm (0.5") above ears across widest point of forehead | — |
|
US Sizing Formula
|
US Hat Size = Head Circumference in cm ÷ 8 (e.g., 56 cm ÷ 8 = Size 7) | — |
|
Fitted Sizing Range
|
6-1/2 (20.5" / 52 cm) to 8-1/4 (26.0" / 66 cm) | — |
|
Alpha Sizing Scale
|
Small (54–55 cm), Medium (56–57 cm), Large (58–59 cm), XL (60–61 cm), XXL (62–63 cm) | — |
|
US vs UK Hat Size Offset
|
UK Hat Size is approximately 1/8 size smaller than US (e.g., US 7-1/4 = UK 7-1/8) | — |
|
Sock Size Number Meaning
|
— | Sock foot length in inches (e.g., '10-13' fits feet 10 to 13 inches long) |
|
Women's Standard (9–11)
|
— | Fits US Women's Shoe 5 to 10 (US Men's 3.5–8.5 / EU 35–41) |
|
Men's Standard (10–13)
|
— | Fits US Men's Shoe 8 to 12.5 (US Women's 9.5–14 / EU 41–46) |
|
Big & Tall (13–15)
|
— | Fits US Men's Shoe 13 to 16 (EU 47–50) |
|
Kids Sizing Scale
|
— | Baby (0–6M, 6–12M), Toddler (Shoe 5–8.5), Youth (Shoe 9–2.5), Junior (Shoe 3–6) |