What is a Greek AMKA?

The AMKA (Αριθμός Μητρώου Κοινωνικής Ασφάλισης) is the Greek social-security registration number. It has 11 digits: the first six are the date of birth (DDMMYY), the next four are a serial, and the last is a Luhn check digit.

How is the AMKA century decided?

The AMKA stores only a two-digit year, so the century is ambiguous. This tool infers the most likely century from today's date and also shows the alternative year so you can pick the correct one.

Is my AMKA uploaded anywhere?

No. Everything runs in your browser using client-side JavaScript — the number is never uploaded or stored.

Greece AMKA Decoder — Gera Tools

Greek AMKA decoder

Decode a Greek AMKA (social-security number) into its date of birth and serial, and verify the trailing Luhn check digit. The AMKA stores only a two-digit year, so the decoder infers the most likely century and also shows the alternative year.

It runs entirely in your browser, so the number you type is never uploaded. A structurally valid AMKA is not guaranteed to be one that has actually been issued — this tool decodes the encoded fields and verifies the check digit only.