French social security number key calculator (NIR)
Calculate the 2-digit key of a French social security number or check a complete number.
Sex, year, month, place of birth and order number, without the key. Spaces and dots are accepted.
The 13 characters followed by the 2-digit key. For Corsica, type 2A or 2B.
- Key
- Sex (1st digit)
- Month and year of birth
- Place of birth
A correct key only proves that the number is consistent, not that it was issued or to whom. The calculation runs in your browser: the number is not stored, sent or tracked.