Why Are Shoe Sizes So Confusing? (The Bizarre History You Never Knew) | Smartest Year Ever (May 12, 2025)

Ever wonder why your shoe size is a 10 in one country and a 42 in another? Or why different brands seem to fit differently even when labeled the same size? Gordy breaks down the bizarre history of shoe sizing, from medieval barleycorn measurements to modern inconsistencies. Discover why the Brannock Device—invented nearly a century ago—remains the gold standard, and why even that doesn’t guarantee a perfect fit.

In this episode, we dive into:

• The medieval origins of shoe sizing.
  

• Why US, UK, EU, and Asian sizes vary so much.
  

• How the Brannock Device works—and why sizes still differ across brands.
  

• The frustrating world of shoe width measurements.
  

Stay curious, stay clever, and join the quest to become the world’s greatest conversationalists!

Sources:

• Kimpton, M. (2019, July 15). Why are shoe sizes so different? Footwear Today. Retrieved from https://www.footweartoday.co.uk/why-are-shoe-sizes-so-different/
  

• O'Byrne, K. (2023, March 23). The Confusing World of Shoe Sizes. The Irish Times. Retrieved from https://www.irishtimes.com/life-style/fashion/the-confusing-world-of-shoe-sizes-1.4204487
  

• Encyclopædia Britannica. (n.d.). Shoe size. Retrieved from https://www.britannica.com/topic/shoe-size
  

Music thanks to Zapsplat.

#SmartestYearEver #ShoeSizes #WeirdHistory #DailyFacts #DidYouKnow #Trivia #Barleycorn #BrannockDevice #Footwear #Measurement