ID Number Validator
Validate an 18-digit ID and parse details.
⚑ID Number Validator
All processing happens locallyWhat this tool does
ID Number Validator is a local ID number validator, processing happens locally in your browser with no upload.
The check follows the national algorithm: weight the first 17 digits, sum, take modulo 11 and map to the final character. No network lookup or name matching occurs.
How to use it
- Paste or type your content into the input field at the top, or press the sample button to load demo data.
- Adjust the options below the input, such as output format, separators, letter case or precision.
- Press the main button to run the conversion. Results appear instantly in the output panel without a page reload.
- When the result looks right, use the copy button in the corner, or download it as a local file.
Tips and notes
Clean up stray spaces and line breaks before pasting for more accurate results.
FAQ
No. Only format and checksum validation is performed; no network request and no personal data is involved.
No. They carry no checksum, so they cannot be validated algorithmically.
Yes. The tool is completely free with no usage limits, and you never need an account or a sign-in.
No. All processing runs locally in your browser, so the input never reaches a server and is never logged or stored.
Yes. The layout is mobile-first, so inputs and buttons stay comfortable on phones and tablets in both orientations.
Yes. A copy button in the output panel puts the result on your clipboard, and you can also download it as a text file.