Shoe Sizing
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Mathematical conversion standards and linear metrics for international footwear sizing: ISO 9407 Mondopoint millimeter foot dimensions, Continental European Paris Points (6.67 mm increments), US and UK Barleycorn scales (8.46 mm increments), and standard shoe width scales.
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Mondopoint Shoe Sizing System (ISO 9407)
Mondopoint is the universal metric footwear sizing system standardized under ISO 9407. Rather than relying on arbitrary historical size numbers, Mondopoint defines footwear by the exact physical length and width of the human foot in millimeters (e.g., 270/105 for a 270 mm long, 105 mm wide foot), serving as the international standard for ski boots, military combat footwear, and precision athletic lasts.
7 specs
European Shoe Sizing System (Paris Points)
Continental European shoe sizing is based on the Paris Point (point de Paris), an 18th-century French unit where 1 point equals exactly 2/3 of a centimeter (6.67 mm / 0.262 in). Calculated directly from shoe last length (foot length plus a 1.5 to 2.0 cm toe allowance), EU sizes range from EU 15 (infant) to EU 50+ (adult) without official half-size intervals.
7 specs
US & UK Shoe Sizing Systems (Barleycorn Scale)
US and UK footwear sizing systems are rooted in the traditional English barleycorn unit, where one full shoe size equals exactly 1/3 inch (8.467 mm) and half sizes equal 1/6 inch (4.233 mm). UK sizing begins at child size 0 (4.0 inches), while US Men's sizing is offset by +1 size and US Women's sizing is offset by +2.5 sizes from the British baseline.
7 specs
Shoe Width Standards (Brannock Width Scale)
Shoe width classifications standardize the forefoot ball joint circumference and foot width relative to shoe length. Measured using the industry-standard Brannock Device, widths span from ultra-narrow (4A/AAAA) to maximum wide (6E/EEEEEE), with each letter step representing a 3/16-inch (4.76 mm) increase in ball circumference.
7 specs