Sri LankaNational ID Number
Specification
Format
YYYYDDDSSSSC
- Other characters are positional codes or literal separators — see the references below.
- Length
- 10–12 characters
- Checksum
- Yes
Check digits are recomputed and verified.
- Embedded data
- Yes
A valid number encodes details such as birth date, gender, or region. The validator extracts them locally in your browser.
Sample test value
740632552088This 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 Sri Lanka National ID Number now — it runs in your browser and the number never leaves your device.
Try it in the validatorValidation rules for Sri Lanka come from the open-source idnumbers library. Report a format issue on GitHub