Skip to main content

Chinese ID Card Validator

Developer Tools

GB11643 checksum + region parsing

Quick Answer

Chinese ID Card Validator: GB11643 checksum + region parsing. Chinese ID Card Validator uses standard developer formulas to compute accurate results instantly.

Validation result
INVALID
✗ check digit · ✓ birth date · ✓ region
ProvinceBeijing
Birth date1990-03-07
GenderMale
Check digit8 ✗ (expected 3)

Validation steps

  1. 1Region code 110105 (Beijing), birth date 1990-03-07, sequence 775 (Male)
  2. 2Σ(digit × weight) mod 11 → expected check code "3", actual "8"
  3. 3Birth date is a valid calendar date

Check code table (sum mod 11)

mod 11012345678910
code10X98765432
Structure per GB 11643: 6-digit region code + 8-digit birth date (YYYYMMDD) + 3-digit sequence (odd=male, even=female) + 1 check digit. Passing the checksum only proves the number is well-formed — it does NOT confirm the ID exists or belongs to anyone. Everything is computed locally in your browser; no data is transmitted or stored. Do not use this tool to validate IDs for unlawful purposes.

Was this tool helpful?

How to Use

  1. Paste or type content: drop code/text into the Chinese ID Card Validator or fill the parameters.
  2. Choose mode/options: switch format, rules or processing as needed.
  3. Live output: results appear instantly — nothing is submitted, data stays in your browser.
  4. One-click copy: copy the output straight into your development environment.

Key Points

  • Chinese ID Card Validator is a free online developer tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: GB11643 checksum + region parsing.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Chinese ID Card Validator formula

Chinese ID Card Validator uses standard developer formulas to compute accurate results instantly.

FAQ

How do I use the Chinese ID Card Validator?
Open the page and fill in the input fields — results update automatically. GB11643 checksum + region parsing.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.

Related Tools

Related Guides

Source & Updates

Based on RFC 4648, ECMA-262 and related specifications. Last updated: 2025-07

Authoritative sources:

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Chinese ID Card Validator[EB/OL]. https://www.yijiansuan.com/en/c/dev/id-card-check

Results provided by this tool are for reference only and do not constitute professional advice.