Shoe Size Conversion Calculator - US, UK, EU, JP & Foot Length
Free online international shoe size converter and foot measurement calculator. Seamlessly convert footwear sizes for Men, Women, and Unisex across US/Canada, UK/India, European (EU), and Japanese Mondopoint systems with a comprehensive interactive size chart.
Shoe Size Conversion & Foot Length Calculator
Convert shoe sizes across US & Canada, UK & India, Europe (EU), Japan (Mondopoint), inches, and centimeters.
Select Gender & Size
International Sizing Table
| US / CA | UK / IN | EU | JP (cm) | Inches |
|---|---|---|---|---|
| 6 | 5.5 | 38.5 | 24 | 9.45" |
| 6.5 | 6 | 39 | 24.5 | 9.65" |
| 7 | 6.5 | 40 | 25 | 9.84" |
| 7.5 | 7 | 40.5 | 25.5 | 10.04" |
| 8 | 7.5 | 41 | 26 | 10.24" |
| 8.5 | 8 | 42 | 26.5 | 10.43" |
| 9 | 8.5 | 42.5 | 27 | 10.63" |
| 9.5 | 9 | 43 | 27.5 | 10.83" |
| 10 | 9.5 | 44 | 28 | 11.02" |
| 10.5 | 10 | 44.5 | 28.5 | 11.22" |
| 11 | 10.5 | 45 | 29 | 11.42" |
| 11.5 | 11 | 45.5 | 29.5 | 11.61" |
| 12 | 11.5 | 46 | 30 | 11.81" |
| 13 | 12.5 | 47.5 | 31 | 12.2" |
| 14 | 13.5 | 48.5 | 32 | 12.6" |
International Shoe Size Conversion Guide: US, UK, EU, Japanese Mondopoint & Foot Length
Footwear sizing systems vary significantly across international markets due to historical standards, including the British Barleycorn system, Paris Point (Europe), and metric millimeter Mondopoint (Japan/Asia). This guide provides accurate size translation curves for men and women.
International Sizing Systems Overview
US & Canada: Based on a standard last length in barleycorns (1/3 inch) with separate scales for men and women.
UK & India: Uses the traditional British barleycorn scale starting from children's size 0.
European (EU): Uses Paris Points, where 1 point = 2/3 cm (6.67 mm).
Japanese / Mondopoint: Directly measures foot length in centimeters or millimeters.
Step-by-Step Instructions
Measure Foot Length in Inches or Centimeters
Stand barefoot on a piece of paper, trace the outline of your longest foot, and measure the distance from the heel to the tip of your longest toe.
Select Gender & Age Category
Choose Men's, Women's, or Kids/Youth sizing standards to apply gender-specific conversion offsets.
Convert Across International Sizing Systems
The calculator instantly maps your foot length to US, UK, European (EU Paris Points), Japanese/Asian (CM/JP), and Mondopoint (mm) shoe sizes.
Check Foot Width (Narrow, Medium, Wide)
Review foot width sizing charts (A, B, C, D standard, E, EE, 4E Extra Wide) to find the perfect fit across running shoes, dress shoes, and boots.
Key Features & Capabilities
- Universal international shoe size conversion: US, UK, EU (Paris Points), Japan/CM, and ISO Mondopoint (`mm`)
- Gender and age category differentiation: Men's, Women's (+1.5 size offset in US), and Children / Youth sizing
- Foot width category calculator: Narrow (Narrow/B), Standard (Medium/D for men, B for women), Wide (E/EE), and Extra Wide (4E/6E)
- Brand-specific fit guidance (Nike, Adidas, New Balance, Brooks, ASICS sizing quirks)
- Visual measurement guide illustrating proper heel-to-toe tracing and toe box clearance (0.5 inch / 1.2 cm allowance)
- Instant client-side calculation with zero server latency
Frequently Asked Questions
How do you calculate US shoe size from foot length in inches?
In the United States footwear sizing system: `Men's US Size = (3 * Foot Length in Inches) - 22`. `Women's US Size = (3 * Foot Length in Inches) - 20.5` (US women's sizing is approximately 1.5 sizes larger than men's for the same foot length). For example, a 10.5-inch foot corresponds to a Men's US 9.5 or Women's US 11.
What are European (EU) shoe sizes (Paris Points)?
European shoe sizes are based on the historic 'Paris Point' unit of measurement, where `1 Paris Point = 2/3 of a centimeter (6.67 mm)`. The formula is: `EU Size = (Foot Length in cm + 1.5 cm allowance) * 1.5`.
Why should you measure your feet in the afternoon or evening?
Human feet naturally swell and expand by up to half a shoe size throughout the day due to gravity, standing, and physical activity. Measuring your feet in the late afternoon ensures your new shoes will not feel painfully tight during extended wear.
What is the Mondopoint shoe sizing system?
Mondopoint (ISO 9407) is the international standardized shoe sizing system used by militaries, ski boot manufacturers, and medical footwear. It expresses shoe size directly as foot length in millimeters (e.g., Mondopoint 275 represents a 275 mm / 27.5 cm foot).
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