Footwear Sizing EngineISO 9407 CalibratedUS Size ⇄ UK Size

US to UK Shoe Size Converter

Direct Answer Summary

To convert US to UK shoe sizes, men subtract 0.5 to 1 size from their US size (a US Men's 10 is a UK 9 or 9.5), whereas women subtract 2 sizes (a US Women's 8 is a UK 6). UK sizing shares the imperial barleycorn increment but employs a slightly shorter last baseline.

Convert US shoe sizes to UK shoe sizes for Men, Women, and Kids with international sizing charts and foot length in inches and cm.

Live Interactive Island

US Size to UK Size Calculator

Step: 0.5
Converted Primary Standard
UK 9.5Exact Fit Match
Measured Foot Length27.1 cm (10.67 in)
Brasil (BR)

42

Padrão Nacional
US Men

10

Standard Width D
US Women

11.5

Standard Width B
EU (Paris Pt)

44

Europa Continental
UK Standard

9.5

British Imperial

Values calibrated via ISO 9407 standards with 20mm last allowance.

Bookmarkable Calculation:
Allowance Rule

20mm Last Allowance

Standard shoe lasts include ~15–20mm beyond foot length to prevent toe pressure during gait movement.

Gender Offset

1.5 Size Difference

US Women's sizing is approximately 1.5 sizes higher than US Men's (e.g. Women's 9.5 equals Men's 8.0).

Paris Point Ratio

6.67 mm per EU Step

European sizes increment by 2/3 of a centimeter (6.67 mm), differing from the 8.46 mm US/UK barleycorn scale.

Shoe Size•Print-Optimized (A4 & US Letter)

US to UK Shoe Size Converter Reference Table

Verified ISO 9407 Mondopoint & International Footwear Scaling Chart

SizeToolsHub.com

Verified International Size & Measurement Reference Platform

US to UK Shoe Size Converter Reference Table

Shoe Size Guide

Reference Standards

International Footwear Conversion Chart.

Official cross-reference table comparing US, UK, European, and Japanese centimeter sizing according to ISO 9407 Mondopoint standards.

US MenUS WomenUKEU (Paris Pt)Foot Length (cm)Foot Length (in)Mondopoint (mm)
6.07.55.538.524.0 cm9.45″240
6.58.06.039.024.5 cm9.65″245
7.08.56.540.025.0 cm9.84″250
7.59.07.040.525.5 cm10.04″255
8.09.57.541.026.0 cm10.24″260
8.510.08.042.026.5 cm10.43″265
9.010.58.542.527.0 cm10.63″270
9.511.09.043.027.5 cm10.83″275
10.011.59.544.028.0 cm11.02″280
10.512.010.044.528.5 cm11.22″285
11.012.510.545.029.0 cm11.42″290
11.513.011.045.529.5 cm11.61″295
12.013.511.546.030.0 cm11.81″300
13.014.512.547.531.0 cm12.20″310
14.015.513.548.532.0 cm12.60″320
Official Reference Chart • https://sizetoolshub.comVerify scale before precision engineering or commercial production.
Common Questions

Frequently Asked Questions.

Expert answers regarding footwear fit, regional size variations, and measurements.

What size is a US 9 in UK shoes?↓

A US Men's size 9 is a UK 8 or 8.5 depending on the brand. A US Women's size 9 is typically a UK size 7.

Why are UK shoe sizes smaller in number than US sizes?↓

UK shoe sizes start at zero at a 4-inch last length with 1/3-inch size increments, while US men's sizes are calibrated with an additional offset.

Do sneaker brands follow standard US to UK conversion?↓

Most brands follow standard sizing, but Nike US Men 10 is UK 9, while Adidas US Men 10 is UK 9.5 due to different last grading rules.

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