Shoe Size Calculator

cm
in
An image illustrating the step-by-step process of using a Shoe Size Calculator. The image shows a user measuring their foot using a ruler or measuring tape and noting down the length in either inches or centimeters. The next step displays the user entering the foot length measurement into the calculator's input field. The calculator then automatically calculates the corresponding shoe size based on a predetermined conversion chart or algorithm. This image visually guides the user on how to use the Shoe Size Calculator, a helpful tool for determining the appropriate shoe size based on foot length.

A shoe size conversion helps you avoid the frustration of ordering shoes online only to find they don't fit when they arrive. With different shoe size systems used around the world, it can get confusing.

What is Shoe Size Conversion?

Shoe size conversion allows you to switch a shoe size in one system to the corresponding size in another system. For example, converting a US women's size 8 shoe to a UK size 6 shoe. This is helpful when ordering shoes from another country. It also allows you to compare sizes across different brands that may follow different sizing.

Here are a few key things to know about shoe size conversion:

  • There are several major shoe size charts used - like the US, UK, EU, CM, and Mondopoint systems. Sizes differ across them.
  • Shoe size numbers represent the length of the foot in inches or centimeters.
  • Other factors like shoe width and shoe length also impact finding the right shoe fit.
  • Every shoe brand also fits slightly uniquely, so specific style and brand matters.

Below we’ll explore the most common shoe size systems and how to convert between them.

Major Shoe Sizing Systems

There are a handful of main international shoe sizing methods. Here they are:

United States & Canada

  • Uses a numeric sizing system.
  • Women's sizes range from 1-15. Men's sizes range from 1-14.
  • Represents the foot length in inches.
  • Comes in narrow, medium, wide, and extra wide shoe widths.

United Kingdom

  • Uses a numeric sizing system. *Sizes range from 0-15.
  • Represents the foot length in barleycorns (an old unit equal to about an inch).
  • Comes in medium, wide, and extra wide widths.

European Union

  • Uses a numeric sizing system.
  • Sizes range from 16-50.
  • Represents the foot length in centimeters.
  • Only comes in medium width.

So if you are size 10 in the US, you may be a size 9 UK and a size 43 EU. The exact conversion varies by gender.

Show Size Chart

Here is an example shoe size conversion chart:

Shoe Size System

3

4

5

6

7

8

9

10

11

12

13

US Women’s

4

5

6

7

8

9

10

11

12

13

14

US Men’s

2

3

4

5

6

7

8

9

10

11

12

UK

3

4

5

6

7

8

9

10

11

12

13

EU

35.5

36

37

38

39

40

41

42

43

44

45

How to Use a Shoe Size Chart

A shoe size guide or conversion chart allows you to accurately switch between international shoe sizes.

Here are the steps:

  1. Find your foot size in your standard country system (like US sizing).
  2. Locate that size on the conversion chart.
  3. Match it to the corresponding size in the destination system (like UK).

For example:

  • If you normally wear a US women's size 8.
  • Look for US women's size 8 on the chart.
  • Follow that row over to the UK column which shows a UK size 6.
  • So a US women's 8 converts to a UK size 6.

Key Factors in Shoe Sizing

While a shoe size calculator does the math for you, there are some additional factors that impact finding your perfect shoe size including:

Foot Shape Variability

Everyone has unique feet. Two people who both wear a US size 10 may prefer different shoe brands and sizes due to:

  • Foot length - One person may have longer, narrower feet while the other has shorter, wider feet
  • Foot width - More volume, edema, high arches, and other variances affect fit
  • Toe shape - Some people have square toes vs narrow toes

Due to shoe size variability between individuals, it's best to focus on fit and comfort rather than strict sizing.

Shoe Style & Brand

Every shoe brand and style uses slightly different lasts and sizing conventions. Variables include:

  • Design elements like toe shape, width, arch height
  • Manufacturing variances
  • Vanity sizing - When sizes run larger to make customers feel better
  • Material stretch - Leather and knits stretch and give over time

While a size may numerically match between two shoes, the actual fit can differ. This is why shoe size accuracy matters but the best indicator is feel.

Measure Properly

To find your most accurate base shoe size:

  • Use a Brannock device or printable ruler to measure your feet
  • Have feet sized late in the day when fully expanded
  • Stand during measurement to mimic shoe wear
  • Size longer foot to best length
  • Consider needs like orthotics that take up space

Proper foot measurement helps eliminate shoe size discrepancies when converting and ordering shoes.

Frequently Asked Questions (FAQs)

Q1: What is shoe size conversion?

Shoe size conversion is the process of converting shoe sizes from one system or measurement to another, usually to find the equivalent size in a different country or region.

Q2: How does shoe size conversion work?

Shoe size conversion involves referencing a shoe size conversion chart, which provides the corresponding sizes in different systems or measurements. 

Q3: Why is shoe size conversion important?

Shoe size conversion is important for international shoe purchases or when dealing with different sizing systems. 

Read More: Shoe Size Conversion Charts US, UK, & EU

                     How To Use Free Shoe Size Conversion?