Shoe & Ring Size Converter
Everyday & OtherConvert international shoe sizes (US, UK, EU, CM, Inches) for men, women, and kids, and convert ring sizes across US, UK, EU, and Japanese millimeter diameters.
UK size 8.3 · Foot length 26.5 cm
About this calculator
Shopping for footwear and jewelry online internationally is notoriously confusing due to disparate regional sizing systems (US, UK, European Continental, and Japanese centimeter scales).
This converter provides exact cross-conversion tables for men's, women's, and children's shoes based on foot length in inches and centimeters, and maps finger circumference/diameter directly to international jewelry ring sizes.
How It Works & Formula
Standard footwear conversion formulas: US Men ≈ EU - 33; US Women ≈ US Men + 1.5; UK ≈ US Men - 1. Ring sizing converts internal diameter d (mm) to US Ring Size = (d - 11.63) / 0.8128.
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