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Most men guess their shoe size based on what they wore in high school. That's why 72% of men wear the wrong size according to a 2018 Journal of Foot and Ankle Research study. This calculator uses actual foot measurements — length and width in inches — to determine your true Brannock-equivalent size.
The width ratio is the key most calculators ignore. A 10.5" foot that's 4.0" wide is fundamentally different from one that's 4.5" wide — and that difference is the gap between a D (standard) and a 2E (wide). We cross-reference your measurements against brand-specific sizing data from New Balance, Nike, Brooks, Allen Edmonds, and Red Wing — brands known for extended width options.
Your arch type adjusts the recommendation because flat feet tend to splay wider under load, while high arches concentrate pressure on the ball. The use case matters because athletic shoes need more toe-box room than dress shoes, which should fit snugger through the midfoot.
All data references the ASTM F1614 standard for footwear sizing and the Brannock Device measurement system used by professional fitters since 1927.
Men's shoe width ranges from narrowest (B) to widest (4E). Most stores only stock D width. Here's what your result means and which brands carry your size.
Available everywhere. Nike, Adidas, New Balance, and every dress shoe brand stocks D width. You have the most options of any width category — roughly 85% of all men's shoes.
Available from most athletic brands and select dress shoe makers. New Balance and Brooks lead here with 2E options across nearly every model. Nike runs narrow — order a half size up. Allen Edmonds offers EEE in most dress styles.
Limited selection. New Balance is your best friend — they manufacture 4E in popular models like the 990v6 and 880. For boots, Red Wing and Thorogood offer EE–EEE. Dress shoes require Made-to-Order from Allen Edmonds or Alden.
Specialty territory. New Balance, Brooks, and ASICS are your primary options in athletic footwear. For casual and dress, consider custom orthotics paired with 3E shoes, or go bespoke. Brands like Dunham (New Balance subsidiary) specialize in this width.