Taobao shoe listings often show a CN or EU-style number plus foot length. The centimeter value is the best anchor for a US estimate.
Quick answer: On Taobao, CN 38 is about US women's 7.5, CN 40 is about US women's 9 or US men's 7, and CN 43 is about US men's 9.5.
If the chart shows 24.5 cm, compare it to the converter instead of guessing from the CN label alone.
Wide feet may need extra room even when the length is correct.
Taobao sellers may use CN and EU labels interchangeably.
Use foot length in centimeters whenever the seller provides it.
This page answers one specific search intent. For a full table, reverse conversion, nearby sizes or live currency and calendar inputs, use the linked main converter.
When a Chinese listing includes both a label and a metric value, use the metric value first. Labels are useful shortcuts, but centimeters, kilograms and square meters are easier to verify.