# item.guide
Side-by-Side Comparison Accessories

Glove Sizes vs. Hat Sizes

Comparing 2 standards across 10 specifications. 10 key differences identified.

Comparing:
Glove Sizes
Hat Sizes

Glove sizing is standardized by measuring hand circumference around the widest part of the palm across the knuckles (excluding the thumb) and hand length from the wrist crease to the tip of the middle finger. Sized from XS (6-7") to XXL (11-12"), sizing charts accommodate dress, winter, and work gloves.

View full Glove Sizes spec sheet →

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.

View full Hat Sizes spec sheet →

Specification Comparison Table

10 Parameters
Parameter / Spec
Governing Standards
ISO 21420 / EN 420 / ASTM D5254 Headwear Association / Traditional US/UK Sizing Standard
Primary Measurement Metric
Hand circumference around knuckles of dominant hand (excluding thumb)
Secondary Metric
Hand length from bottom wrist crease to tip of middle finger
Size Scale
XS (6–7"), S (7.5–8"), M (8.5–9"), L (9.5–10"), XL (10.5–11"), XXL (11.5–12")
European Numerical Sizes
Size 7 (S), Size 8 (M), Size 9 (L), Size 10 (XL), Size 11 (XXL)
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)