Chinese ID Card Checker
ID Card Knowledge Base
ID Number Structure
Chinese ID numbers contain these key elements:
1. Area Code: First 6 digits (administrative division)
2. Birth Date: Positions 7-14 (18-digit) or 7-12 (15-digit)
3. Sequence Code: Positions 15-17 (18-digit) or 13-15 (15-digit) - odd for male, even for female
4. Check Digit: Position 18 (18-digit), calculated per ISO 7064:1983
Validation strictly follows GB11643-1999 national standard.
1. Area Code: First 6 digits (administrative division)
2. Birth Date: Positions 7-14 (18-digit) or 7-12 (15-digit)
3. Sequence Code: Positions 15-17 (18-digit) or 13-15 (15-digit) - odd for male, even for female
4. Check Digit: Position 18 (18-digit), calculated per ISO 7064:1983
Validation strictly follows GB11643-1999 national standard.
Key Features
Comprehensive Validation:
1. Authenticity Check: Verify ID number validity
2. Region Locator: Identify registration district
3. Format Upgrade: Convert 15-digit to 18-digit ID
4. Cultural Info: Zodiac and animal sign details
Note: This tool only validates number structure, not personal information.
1. Authenticity Check: Verify ID number validity
2. Region Locator: Identify registration district
3. Format Upgrade: Convert 15-digit to 18-digit ID
4. Cultural Info: Zodiac and animal sign details
Note: This tool only validates number structure, not personal information.
Usage Compliance
Per China's Personal Information Protection Law (PIPL):
1. Illegal use of others' ID numbers is prohibited
2. No query records stored - complete privacy protection
3. Daily limit: 10 queries to prevent abuse
4. Only supports Chinese ID card, Chinese Hong Kong ID card, Chinese Taiwan ID card
Violators will bear legal responsibility.
1. Illegal use of others' ID numbers is prohibited
2. No query records stored - complete privacy protection
3. Daily limit: 10 queries to prevent abuse
4. Only supports Chinese ID card, Chinese Hong Kong ID card, Chinese Taiwan ID card
Violators will bear legal responsibility.
