What is a Tunisian CIN?

The CIN (Carte d'Identite Nationale) number is the 8-digit identifier printed on the Tunisian national identity card. It is widely used for KYC in banking and for employment-contract processing.

How many digits is a Tunisian CIN?

Exactly 8 digits. This validator rejects any value that is not 8 numeric digits after spaces are removed.

Does the CIN have a check digit?

No. Tunisia does not publish a weighted check-digit algorithm for the CIN, so this tool validates the structural format only, not a checksum.

What does the leading digit mean?

By convention older CIN series begin with 0 and newer issuance begins with 1. The tool surfaces this as a hint to help spot obviously mistyped numbers, but it is not a formal validation rule.

Is my CIN sent anywhere?

No. The check runs entirely in your browser, so the CIN never leaves your device and nothing is logged or transmitted.

Tunisia CIN Validator

The Tunisian CIN (Carte d’Identite Nationale) number is the 8-digit identifier on every Tunisian national identity card. It is required for KYC checks in banking, for signing employment contracts, and for many administrative forms. A mistyped CIN will be rejected downstream, so this free validator confirms the format is well-formed — entirely in your browser.

How it works

The CIN is a fixed-length numeric identifier. This validator applies the official structural rules:

Strip spaces so you have a continuous string of digits.
Confirm the value is exactly 8 digits and contains nothing but digits.
Inspect the leading digit to report the issuance series — historically 0 for older cards and 1 for newer issuance.

Because no public check-digit algorithm exists for the CIN, the tool validates format rather than computing a checksum. The leading-digit note is a heuristic to catch obvious data-entry mistakes.

Example

A CIN such as 01234567 is reported as a valid 8-digit format with the note “Leading 0 — older issuance series”. A value like 1234567 (7 digits) is rejected as the wrong length.

A valid result confirms the number is well-formed, not that the card was actually issued. To confirm issuance, verify with the relevant Tunisian authority. All processing stays on your device.