Shoe Size Converter - US, UK, EU, CM
Convert shoe sizes between US, UK, EU, CM, and Mondopoint systems for adult men, adult women, and kids.
Shoe Size Converter
Results
What is a Shoe Size Converter?
A shoe size converter translates shoe sizes between US, UK, EU, CM, and Mondopoint systems so online shoppers can compare international footwear charts quickly. It is especially useful when a product page lists only one regional size, or when you know your measured foot length but not the matching retail label.
- • International shopping: Compare US to UK shoe size results before ordering from overseas retailers.
- • Adult size matching: View US men's, US women's, UK, EU, CM, and Mondopoint outputs at once.
- • Kids sizing: Convert children's foot length into practical US C/Y, UK, and EU chart values.
If you are converting measured foot length from another unit first, use our Length Converter before entering the centimeter value here.
How Shoe Size Converter Works
The calculator uses foot length as the shared measurement behind adult sizing systems. Adult US and UK sizes use one-third-inch steps, while EU sizes use Paris-point spacing. The calculator normalizes the entered value to millimeters, then rounds the converted sizes to common half-size labels.
Children's sizes are different, so kids mode uses a lookup chart and recommends the next larger row when a measured foot length lands between two entries.
According to The Brannock Device Company, the US size system is linear, with each additional full size adding one-third of an inch in length.
For other body measurement conversions, try our Height Converter for quick metric and imperial results.
Key Concepts Explained
CM Shoe Size
CM usually refers to foot length or insole length in centimeters, depending on the manufacturer.
Mondopoint
Mondopoint expresses foot length in millimeters, so 270 is approximately 27.0 cm.
US Men vs Women
Common retail charts place US women's sizes about 1.5 sizes above equivalent US men's sizes.
Kids C and Y Sizes
Children's shoes move from child C labels to youth Y labels and should be chart matched.
If a brand gives foot length in fractional inches, our Inches to Fraction Calculator can help you clean up the measurement.
How to Use This Calculator
Choose Category
Select adult men, adult women, or kids.
Select System
Pick US, UK, EU, CM, or Mondopoint.
Enter Size
Type the known shoe size or foot length.
Check Results
Use the converted sizes as a starting point for brand charts.
For quick imperial unit cleanup, use our Feet to Inches Calculator alongside foot length measurements.
Benefits of Using This Calculator
- •Compare listings faster: Translate overseas shoe listings without opening several separate charts.
- •Handle adult offsets: See US men's and women's equivalents together for unisex styles.
- •Support kids sizing: Use a children's shoe size converter that understands C and Y labels.
- •Use measured length: Convert foot length to shoe size when CM or Mondopoint is the cleanest input.
For other everyday conversion tasks, browse our Area Converter when measurements appear in mixed units.
Factors That Affect Your Results
Brand Fit
Different brands use different lasts, toe boxes, and conversion charts.
Foot Width
Width is not converted here, but it can change which size feels comfortable.
Measurement Method
Measure both feet near the end of the day and use the larger foot.
Kids Growth Room
When a child is between chart rows, the next larger size is usually the practical starting point.
According to the ISO 9407 standard summary, Mondopoint sizing is based on foot length measured in millimetres and may also include foot width.
For mass and weight unit comparisons in shopping or shipping contexts, use our Weight Converter as a related conversion tool.
Frequently Asked Questions (FAQ)
Q: How do I convert US shoe size to UK?
A: For adult sizes, UK is usually about one size lower than US men's and about 2.5 sizes lower than US women's. This converter normalizes the entered value to foot length first, then returns rounded UK, US, EU, CM, and Mondopoint results.
Q: What is the difference between US men's and women's shoe sizes?
A: Many retail charts treat a US women's size as about 1.5 sizes larger than the equivalent US men's size. For example, a US men's 8 is commonly close to a US women's 9.5, though brand charts can vary.
Q: How do I convert EU shoe size to US?
A: EU shoe sizes are based on Paris points, so they do not line up perfectly with US half sizes. Enter the EU number and choose adult men, adult women, or kids to see the nearest US equivalent and foot length estimate.
Q: What does CM mean in shoe size?
A: CM usually means a centimeter-based foot length or insole length label. Because brands do not always use it the same way, it is best to compare the CM result with the brand's own size chart before ordering.
Q: What is Mondopoint shoe sizing?
A: Mondopoint is a sizing system based on foot length in millimeters, sometimes with width included. A Mondopoint value of 270 means a foot length near 270 mm, which is also 27.0 cm.
Q: Are shoe size conversions exact?
A: No. Shoe size conversions are practical estimates because brands, shoe shape, width, socks, and regional charts all affect fit. Use the converted result as a starting point, then confirm against the brand's size chart.