How to use
- Paste the value into the validation field. \n
- Review format and check-digit feedback. \n
- Fix the input if needed — nothing is sent to a server.
What it's for
Validate Thai national ID check digits.
About the document
Thai national IDs are 13 digits with a modulo-11 check digit.
Also useful
Need an example? Try the national ID generator.
คำถามที่พบบ่อย
- Does this query official databases?
- No. Validation is algorithmic and local only.
- Does data leave my browser?
- No. Everything runs locally on your device.