International sizing refers to the various systems used to categorize clothing and footwear sizes across different countries. These systems can vary significantly, leading to confusion for consumers when shopping internationally. For example, a size 8 in the United States may correspond to a size 12 in Australia or a size 40 in Europe. To help navigate these differences, many brands provide size conversion charts that outline equivalent sizes in various regions. Understanding international sizing is essential for online shopping and travel, ensuring that individuals can find the right fit regardless of where they are purchasing items.