Chinese kids clothes are commonly sized by height, such as 100, 110, 120, 130 and 140. Age labels are only rough shortcuts.
Quick answer: CN 100 is often around US 3T-4T, CN 120 around US 6-7, CN 130 around US 8 and CN 140 around US 10.
For a child around 125 cm tall, check CN 120 and CN 130 rows depending on fit preference.
For jackets, compare sleeve length and chest room over layers.
Children of the same age can have different heights and body shapes.
Use the seller chart when buying fitted items or uniforms.
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.