Footwear Sizing EngineISO 9407 CalibratedUK Size ⇄ US Size

UK to US Shoe Size Converter

Direct Answer Summary

Converting UK to US shoe sizes requires adding 0.5 to 1 size for men (a UK 9 corresponds to a US Men's 9.5 or 10) and adding 2 full sizes for women (a UK 6 equals a US Women's 8). Both systems use 1/3-inch increments, but US sizing starts with a higher baseline offset.

Convert UK shoe sizes to American (US) shoe sizes across adult and youth shoes with centimeter measurements and precise width guidelines.

Live Interactive Island

UK Size to US Size Calculator

Step: 0.5
Converted Primary Standard
US 10.5Exact Fit Match
Measured Foot Length27.5 cm (10.83 in)
Brasil (BR)

42

Padrão Nacional
US Men

10.5

Standard Width D
US Women

12

Standard Width B
EU (Paris Pt)

44

Europa Continental
UK Standard

10

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)

UK to US Shoe Size Converter Reference Table

Verified ISO 9407 Mondopoint & International Footwear Scaling Chart

SizeToolsHub.com

Verified International Size & Measurement Reference Platform

UK to US 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 is a UK 8 in US shoe size?↓

A UK 8 in men's footwear is a US Men's 8.5 (or 9 in athletic brands like Nike), and in women's is a US Women's 10.

How do UK and US shoe sizes compare for children?↓

Children's UK sizes are offset by approximately half a size from US kids' sizes up to youth size 13, after which adult scaling begins.

Are UK shoe widths different from US shoe widths?↓

Yes, standard UK men's width is typically labeled 'F' (equivalent to US 'D'), and standard UK women's width is 'D' (equivalent to US 'B').

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