Chinese ID Card Validator
Validate 18-digit national ID numbers. Extract birth date, gender, province. Auto-masking for privacy.
This tool validates Chinese resident identity card (居民身份证) numbers according to the GB 11643-1999 standard. It verifies the 18-digit format, calculates and checks the checksum digit (校验码), and extracts embedded information including birth date, gender, and issuing province.
Privacy protection is built in: sensitive digits are automatically masked when displayed. You can toggle full visibility if needed. All validation happens locally in your browser — no ID numbers are transmitted anywhere.