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US to Japanese Size Converter

Complete guide for converting all US sizes to Japanese: clothing, shoes, and rings. Essential for shopping Japanese brands.

Women's Clothing: US to Japan

US 2-4
7-9
JP (S)
US 6-8
11-13
JP (M)
US 10-12
15-17
JP (L)
US 14-16
19-21
JP (LL)

Men's Clothing: US to Japan

US S
M
Japan
US M
L
Japan
US L
LL/XL
Japan
US XL
3L
Japan

Shoe Sizes: US to Japan (CM)

Women's

US 623.0 cm
US 724.0 cm
US 825.0 cm
US 926.0 cm

Men's

US 826.0 cm
US 927.0 cm
US 1028.0 cm
US 1129.0 cm

US to Japanese Size Conversion Guide

Converting US sizes to Japanese sizes requires understanding that Japanese sizing generally runs 1-2 sizes smaller than American sizing. This applies across clothing, shoes, and accessories.

Key Differences

  • Clothing: US sizes are typically 2 sizes larger than Japanese (US 8 = Japan 12)
  • Shoes: Japanese uses centimeters instead of numerical sizes
  • Rings: Different numbering system based on diameter

Shopping Tips for Americans in Japan

  • Always size up when buying Japanese brands
  • Know your measurements in centimeters
  • Try before buying - Japanese cuts may differ
  • UNIQLO and GU are good starting points (consistent sizing)
  • Check sleeve/inseam length for tall individuals

Popular Japanese Brands for Americans

UNIQLO

Most consistent with international sizing. Good starting point for understanding Japanese sizes.

MUJI

Minimalist brand with slightly relaxed fit. True to Japanese sizing.

💡 Pro Tip for Americans:

When shopping online from Japanese sites, use the size charts in centimeters. This is more accurate than relying on S/M/L labels.