ID Card Checker
Validate a Chinese 18-digit ID card and extract birth date, gender and region. Local & private.
How it works
Enter the number
Type the 18-digit ID number.
Check
The check digit is verified using the standard weighted algorithm.
Read details
Birth date, gender and region are extracted from the digits.
Why use Ercc ID Card Checker?
Validated
Verifies the check digit, not just the length.
Informative
Extracts birth date, gender and province.
Private
Everything runs locally in your browser.
Frequently Asked Questions
The 18th digit is a checksum computed from the first 17 digits using a weighted mod-11 algorithm. It can be 0-9 or X.
Digits 1-6 are the region code, 7-14 the birth date, 15-17 a sequence code (last digit indicates gender), and 18 the check digit.
The 17th digit (third in the sequence code) is odd for male and even for female.
No. It only confirms the number is structurally valid, not that a real person holds it.
Yes, 100% free.