Hong KongNational ID Number
Also known as: 香港身份證
Specification
Format
This number has no simple display mask — its structure is defined by validation rules. See the references below for details.
- Length
- 8–11 characters
- Checksum
- Yes
Check digits are recomputed and verified.
- Embedded data
- No
This number encodes no extractable personal data.
Sample test value
AS2253857This value was randomly generated to satisfy the format and check-digit rules. It is not a real ID and does not belong to any person.
Ready to check a number?
Validate a Hong Kong National ID Number now — it runs in your browser and the number never leaves your device.
Try it in the validatorValidation rules for Hong Kong come from the open-source idnumbers library. Report a format issue on GitHub