Hi @Seller_6VW9mdTd1Jus9,

I understand you're looking to convert between US and Chinese shoe sizes. Let me share what I found in Amazon's help documentation.

According to the "Why can't Amazon translate my provided size into other stores?" section at Shoe size standards FAQ, size translations vary by brand. For example, one brand might convert a Chinese size differently than another brand does. Because of this, Amazon doesn't provide standard conversions between different sizing systems.

The good news is that you can create your own size chart to show customers how your brand's sizes convert. However, I should mention that size charts are currently only available to brand-registered sellers, as noted in Add size charts with Selling Partner Support.

Best regards, Michael