CN to US Shoe Size Converter
Convert Chinese (CN) shoe sizes to US sizes instantly. Perfect for shopping on SHEIN, AliExpress, Temu, and other Chinese platforms.
The modern Chinese shoe size system is based on foot length in millimeters (mm). For example, a size '265' means the foot length is 265 millimeters, providing a direct and accurate standard.
How to Convert CN to US Shoe Sizes
Step-by-Step Guide
- Find Your CN Size: Look for the millimeter (mm) measurement on the product page. This is the modern CN size (e.g., 240, 245, 250, 255, 260, 265).
- Identify Old vs. New System: The old Chinese system (e.g., 38, 40) was based on EU sizes but often didn't match. The new system uses millimeters directly, which is more accurate.
- Use the Converter: Enter your CN size (in millimeters) in the interactive converter below, or find your size in the quick reference charts.
- Select Your Gender: Choose whether you're converting men's, women's, or children's sizes. The conversion scales differ between genders.
Shopping Tips for Chinese Platforms
- ✓Look for MM Measurements: On SHEIN, AliExpress, or Temu, always look for the foot length in millimeters (mm) or centimeters (cm) rather than relying on the listed US/EU sizes, which may be inaccurate.
- ✓Check Seller's Size Chart: Different sellers may have slightly different sizing. Always check the specific seller's size chart if available.
- ✓Read Customer Reviews: Look for reviews that mention sizing, especially if customers mention whether the shoes run small or large.
- ✓Measure Your Foot: For the most accurate conversion, measure your foot length in centimeters and use that to find your CN size.
Men's Popular CN to US Sizes
| China (CN) | United States (US) |
|---|---|
| 255 | 8 |
| 260 | 8.5 |
| 265 | 9 |
| 270 | 9.5 |
| 270 | 10 |
| 275 | 10.5 |
| 275 | 10.5 |
Women's Popular CN to US Sizes
| China (CN) | United States (US) |
|---|---|
| 230 | 6 |
| 235 | 6.5 |
| 235 | 7 |
| 240 | 7.5 |
| 245 | 7.5 |
| 245 | 8 |
| 250 | 8.5 |
Understanding Chinese Shoe Sizing Systems
Shopping on international websites can be tricky, but finding your shoe size doesn't have to be. Chinese shoe sizes (CN) are based on foot length in millimeters, which is actually more accurate than traditional US sizing. This page is built to help you convert with confidence.
Modern CN System (Recommended):
The modern Chinese shoe size system uses foot length in millimeters (mm) directly. For example, a size '265' means the foot length is 265 millimeters. This provides a direct and accurate standard that eliminates confusion.
Old CN System (Less Reliable):
The old Chinese system (e.g., size 38, 40) was based on the European (EU) system but manufacturing inconsistencies meant they didn't always match. The old system can be estimated as (Foot Length in CM × 2) - 10, but this is less reliable than the modern millimeter-based system.
Frequently Asked Questions for International Shoppers
Is a SHEIN size CN 38 a US size?
A 'CN 38' on platforms like SHEIN usually refers to the old Chinese sizing system and is roughly a US women's size 7.5. However, for the most accuracy, look for the millimeter (mm) size (e.g., 240) which our converter uses. The modern CN system is more reliable because it uses foot length directly in millimeters.
How do I use the AliExpress shoe size chart?
The most reliable method is to ignore the US/EU sizes listed and find the foot length measurement in centimeters (cm) or millimeters (mm) on the seller's chart. Use that millimeter value (e.g., 255) as the 'CN' size in our converter for an accurate US size. Always prioritize the actual foot length measurement over the listed size numbers.
Why do different Chinese sellers have different size charts?
While the official CN standard is based on millimeters, some smaller manufacturers or brands might have slight variations. It's always best to check the specific seller's size chart if available and look for foot length (in cm or mm) as the most reliable measure. Customer reviews can also help identify if a particular seller's shoes run small or large.
What's the difference between the old and new Chinese shoe size systems?
The old Chinese system (e.g., 38, 40) was based on EU sizes but often didn't match due to manufacturing inconsistencies. The new system uses foot length in millimeters directly (e.g., 240, 245, 250), which is more accurate and reliable. When shopping, always look for the millimeter measurement rather than the old-style size numbers.