Complete Guide to Shoe Sizes
Shoe sizing varies significantly across countries and brands, making finding the right fit challenging especially when shopping online or internationally. Understanding shoe size conversions and measurement methods helps ensure comfortable, properly fitting footwear and reduces return rates from online purchases.
Understanding Shoe Size Systems
The United States uses a system based on increments of 1/3 inch (8.47mm) between sizes. UK sizing runs about one size smaller than US sizing—a US women's size 8 equals UK size 6. European sizing uses Paris Points (2/3 cm increments), resulting in larger numbers—US 8 equals approximately EU 38-39. These different measurement bases create conversion complexity.
How to Measure Your Feet
Measure feet at the end of the day when they're largest due to swelling. Stand on paper and trace your foot outline. Measure from heel to longest toe in both inches and centimeters. Measure both feet as they often differ in size—always buy for the larger foot. Add about 0.5 inches (1.25cm) to your measurement for proper toe room when comparing to size charts.
Width Sizing Considerations
Beyond length, shoe width significantly impacts fit. US sizing includes width designations: AA (narrow), B (standard women's), D (standard men's), and EE (wide). European and UK shoes often don't specify width, designed for medium-width feet. If you have narrow or wide feet, prioritize brands that offer width options for optimal comfort.
Brand Variations and Fit
Shoe sizes vary between brands and even within brands for different styles. Athletic shoes often run larger than dress shoes. Italian and Spanish brands typically run small compared to US sizing—size up when buying from these countries. Always check brand-specific size charts and read customer reviews about fit before purchasing, especially for expensive or hard-to-return items.
Children's Shoe Sizing
Children's shoes use different sizing systems: infant (0-13), children's (1-13), and youth (1-7). UK children's sizes run about one size smaller than US. European children's sizing is more straightforward, using foot length in centimeters directly. Children's feet grow quickly, so leave about 0.5-0.75 inches of growing room but not so much that shoes slip and cause tripping.
Athletic Shoe Considerations
Athletic shoes from brands like Nike, Adidas, and New Balance often run differently from dress shoe sizing. Nike tends to run small; Adidas runs large; New Balance offers width options for better fit. For running shoes, size up half to full size from your dress shoe size to accommodate foot swelling during exercise and prevent toenail damage.
Ordering Shoes Online
When buying shoes online, measure your feet first and compare measurements to brand size charts rather than relying solely on your usual size. Read customer reviews for comments about sizing accuracy. Order two sizes if the retailer offers free returns—trying at home is the only way to ensure proper fit. Check return policies before purchasing, especially from international sellers where returns can be costly.
High Heel Sizing
High heels often require different sizing than flats due to foot positioning. The higher the heel, the more your foot slides forward, potentially requiring a half size down for proper fit. However, this varies by heel type and foot shape. Platforms can provide more toe room, potentially needing sizing up. Always try heels with the type of hosiery you'll wear with them.