Generate a French VAT number from a valid SIREN or SIRET, then check its local format and key.
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Paste up to 50 valid identifiers. A SIRET is automatically reduced to its 9-digit SIREN.
Local format and key check. Use VIES to confirm that a company is registered for intra-EU trade.
Open the official VIES checkerUse it well
FAQ
Enter the nine-digit SIREN. The tool checks its Luhn checksum, calculates the numeric VAT key and combines FR, the key and the SIREN.
Yes. The first nine digits of a SIRET are the SIREN used to calculate the company’s French VAT number.
The common format has 13 characters: FR, a two-digit computer key and the company’s nine-digit SIREN.
No. It proves only local mathematical consistency. The French tax administration assigns VAT numbers and VIES reports intra-EU registration status.
No. All calculations run locally in the browser. Use the European Commission’s VIES checker for official intra-EU status.
Yes. Paste one identifier per line to convert up to 50 values in one batch.
The tool rejects identifiers with the wrong length, an invalid Luhn checksum or an invalid extracted SIREN.
OnSubmit tools run in the browser whenever the task can be processed locally. Avoid pasting production secrets, real banking details or personal data into public tools.