US Men's to UK Size Converter
Convert US Men's (US M) to UK Size (UK) instantly. Formula: UK = US M × 1.5.
Shoe Size Converter
4 units available
1 US M = 1.5 UK
Formula:
UK = US M × 1.5With your value: 1 US M = 1.5 UK
Other US Men's to UK Size conversions
US Men's to UK Size Conversion Table
| US Men's (US M) | UK Size (UK) |
|---|---|
| 0.5 | 1 |
| 1 | 1.5 |
| 2 | 2.5 |
| 5 | 5.5 |
| 10 | 10.5 |
| 15 | 15.5 |
| 20 | 20.5 |
| 25 | 25.5 |
| 50 | 50.5 |
| 100 | 100.5 |
| 250 | 250.5 |
| 500 | 500.5 |
| 1000 | 1,000.5 |
UK Size to US Men's Conversion Table
| UK Size (UK) | US Men's (US M) |
|---|---|
| 0.5 | 0 |
| 1 | 0.5 |
| 2 | 1.5 |
| 5 | 4.5 |
| 10 | 9.5 |
| 15 | 14.5 |
| 20 | 19.5 |
| 25 | 24.5 |
| 50 | 49.5 |
| 100 | 99.5 |
| 250 | 249.5 |
| 500 | 499.5 |
| 1000 | 999.5 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
US Men's (US M)
Shoe Size
Only Mondopoint (ISO 9407) is defined from foot length in millimetres. US, UK and EU scales are trade conventions.
Manufacturer lasts differ. Treat cross-system results as a starting point, not a guaranteed fit.
Source: ISO 9407:2019, Footwear sizing — Mondopoint system
International Organization for Standardization · Reviewed 2026-07-01
UK Size (UK)
Shoe Size
Only Mondopoint (ISO 9407) is defined from foot length in millimetres. US, UK and EU scales are trade conventions.
Manufacturer lasts differ. Treat cross-system results as a starting point, not a guaranteed fit.
Source: ISO 9407:2019, Footwear sizing — Mondopoint system
International Organization for Standardization · Reviewed 2026-07-01
How to Convert US Men's to UK Size
This conversion uses an offset formula, so it cannot be described by a single multiplication factor.
Formula: UK = US M × 1.5
Reverse: US M = UK × 0.5
Step-by-Step Example
- Start with your value in US Men's. For example: 5 US M
- Apply UK = US M × 1.5
- The result is: 5.5 UK
About US Men's
US men's shoe sizes are used in the United States and Canada.
Common uses: shoe shopping (US), footwear design.
About UK Size
UK shoe sizes are based on the length of the last, measured in barleycorns (1/3 inch).
Common uses: shoe shopping (UK), international sizing.
Frequently Asked Questions
How many UK Size are in 1 US Men's?
There are exactly 1.5 UK Size in 1 US Men's.
What is the formula to convert US Men's to UK Size?
The formula to convert US Men's to UK Size is: UK = US M × 1.5. For example, to convert 10 US Men's to UK Size, you would apply the formula to 10.
What is a US Men's?
US men's shoe sizes are used in the United States and Canada.
What is a UK Size?
UK shoe sizes are based on the length of the last, measured in barleycorns (1/3 inch).
What are the common uses of US Men's?
The US Men's is commonly used in shoe shopping (US), footwear design.
Related Shoe Size Conversions
Cite this page
UnitConvertLab. (2026). US Men's to UK Size converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/shoe_us_men-to-shoe_uk