Currawong China USCI Checker

Check Chinese business ID format and check digit for free.

Awards

About

Currawong's free browser-based checker checks the structure, allowed characters and check digit of an 18-character Chinese Unified Social Credit Code (USCI). It helps buyers spot input errors before researching a supplier. A passing result does not confirm company existence, current status or supplier reliability. I operate Currawong, which also offers separate, optional paid company-record reports.

Features

Check the 18-character structure and permitted character set
Recalculate the check digit using the GB 32100-2015 rule
Explain the registration authority, entity category and province prefix
Keep the entered code in the browser during the calculation
Read worked examples, cited sources and the limits of a passing result

Use Cases: Run Business Understand & Improve

Tags: calculator sourcing research

Software Types: Web App

Pricing Model Free

Added by Bao L. Zhou (Currawong) on October 8, 2026