SIRET/SIREN Validator
Validate and generate French business identification numbers
Validate SIREN or SIRET
Enter a 9-digit SIREN or 14-digit SIRET number
Try these examples:
Validation Result
Detailed breakdown of the number
Enter a number to validate
About SIREN & SIRET
What is SIREN?
SIREN (Système d'Identification du Répertoire des ENtreprises) is a 9-digit French business identification number assigned to companies by INSEE. It uniquely identifies a legal entity.
What is SIRET?
SIRET (Système d'Identification du Répertoire des ETablissements) is a 14-digit number consisting of the SIREN plus a 5-digit NIC (Numéro Interne de Classement) that identifies a specific establishment.
How Validation Works
Both SIREN and SIRET are validated using the Luhn algorithm (modulo 10). The checksum must equal zero when calculated correctly.
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