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Free shoe size converter for adult men’s and women’s footwear: translate among US, UK, EU, foot length (cm), and a Japan-style centimeter label. Pair with our suit size calculator when you are building a full formal fit plan.
Last updated: April 18, 2026
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Half sizes are OK. Foot length is heel-to-toe standing (longer foot if they differ).
US
9
UK
8
EU
42.5
JP (≈ cm)
27
Foot length (mondo-style)
27 cm
Athletic vs dress lasts, wide/narrow widths, and kids' grading are not modeled here—use official charts for purchases.
Typical use
Retail & athletic
Men’s and women’s scales differ—always pick the right gender in the tool.
Offset model
Men ≈ US − 1
Women’s UK numbers track differently than men’s—gender selection matters.
Formula style
Tied to foot length
Brands still round EU differently; treat as a close estimate.
Best input
Measure, then convert
If you only trust a ruler measurement, start from centimeters for fewer translation errors.
Shown here as
Rounded cm
Tags vary; this field is a quick comparison anchor, not every retailer’s label scheme.
Limits
N / M / W / EE
If shoes feel tight side-to-side, check width letters on the brand chart.
Men's US 9 (default example): UK 8, EU 42.5, foot length about 27 cm, JP-style 27.
We first translate your input into an estimated foot length in centimeters using common linear relationships between regional scales. From that length we compute the other labels so every output row is internally consistent with the same mondo estimate. Explore more fitness & lifestyle calculators for apparel and body-measurement tools.
foot_cm ≈ 18 + US_men and foot_cm ≈ 16 + US_women
UK_men ≈ US_men − 1, UK_women ≈ US_women − 2
EU ≈ 1.5 × foot_cm + 2 (continuum; brands round)
These are teaching-friendly approximations. Premium lasts, skate vs dress shapes, and regional stock policies can shift your best size.
Measuring suits too? Open the suit size calculator.
Get Custom Calculator for Your PlatformTakeaway: use conversions to shortlist sizes, then confirm return policy and width options.
Share it with anyone shopping across international brands.
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