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Shoe Size Conversion Guide
Shoe size standards vary by country, so size conversion is required when purchasing directly from overseas or from international brands.
Shoe size standards by country
Korea (KR): Units in mm (based on foot length)
United States (US): Inch-based units, different standards for men and women
Europe (EU): cm based (foot length + extra allowance)
China (CN): Foot length (mm) ÷ 10 × 2 method
Japan (JP): cm unit (similar to Korea)
UK: US standard -0.5
United States (US): Inch-based units, different standards for men and women
Europe (EU): cm based (foot length + extra allowance)
China (CN): Foot length (mm) ÷ 10 × 2 method
Japan (JP): cm unit (similar to Korea)
UK: US standard -0.5
Major Brand Size Characteristics
Nike: Recommended to wear your usual size or +0.5
Adidas: Recommend your usual size or +0.5
New Balance: True to size or -0.5
Converse: Recommended to buy +0.5~1 size larger
Adidas: Recommend your usual size or +0.5
New Balance: True to size or -0.5
Converse: Recommended to buy +0.5~1 size larger
Shoe sizes may vary by ±5mm depending on the brand, model, and manufacturer. If possible, please try them on before purchasing or check the relevant brand's size guide.
US Shoe Size Conversion Chart (Men's Standard)
US 8 = 260mm · US 8.5 = 265mm · US 9 = 270mm
US 9.5 = 275mm · US 10 = 280mm · US 10.5 = 285mm
US 11 = 290mm · US 12 = 300mm
US 9.5 = 275mm · US 10 = 280mm · US 10.5 = 285mm
US 11 = 290mm · US 12 = 300mm
European Shoe Size Conversion Chart (Men's Standard)
EU 40 = 255mm · EU 41 = 260mm · EU 42 = 265mm
EU 42.5 = 270mm · EU 43 = 275mm · EU 44 = 280mm
EU 45 = 290mm · EU 46 = 300mm
EU 42.5 = 270mm · EU 43 = 275mm · EU 44 = 280mm
EU 45 = 290mm · EU 46 = 300mm
Frequently Asked Questions
How many millimeters is a US shoe size 9 in Korean millimeters?
US Men's 9 is equivalent to Korean 270mm (27cm). US Women's 9 is equivalent to Korean 260mm (26cm). Please note that the standards for men and women are different.
How many millimeters is a European shoe size 42 in Korean?
EU 42 is based on a Korean male size of 265mm (26.5cm). There may be a difference of ±5mm depending on the brand.
How do I convert Nike sizes?
Nike uses US sizing standards. Korean 270mm is equivalent to a US Men's US 9. People often purchase Nike running shoes 0.5 sizes larger than their usual size.
How to convert Adidas European sizes?
Adidas sizes are based on EU standards. EU 42.5 is equivalent to Korean 270mm (US 9). Adidas shoes also offer D/E wide options depending on the width of the foot.
How to convert Chinese shoe sizes?
Chinese (CN) sizes are similar to millimeters. CN 250 equals Korean 250mm, and CN 265 equals Korean 265mm. Since some Chinese brands have different foot length standards, we recommend taking actual measurements before wearing.