Kennitala generator (Iceland)
An Icelandic kennitala is ten digits — date of birth, a serial, a MOD-11 check digit, and a century digit. These test values are synthetic but checksum-valid.
Synthetic · not collision-guaranteed Validate a number →
180152-9890
Synthetic kennitala with a valid check digit. Not a real issued number.
Format specification
| Identifier | Kennitala |
|---|---|
| Country | 🇮🇸 Iceland |
| Format | 000000-0000 |
| Length | 10 characters |
| Checksum | MOD 11 |
| Example | 200495-2840 |
| Safe strategy | Synthetic |
| Data quality | Verified against sources |
Kennitala: what each part means
| 000000 | Date of birth as DDMMYY. |
|---|---|
| 00 | Serial number, starting from 20 on real kennitölur. |
| 0 | MOD-11 check digit (weights 3,2,7,6,5,4,3,2); combinations needing a control of 10 are never issued. |
| 0 | Century digit: 9 for people born in the 1900s, 0 for the 2000s. These test values use 0. |
Validation regex
Matches the canonical value — strip separators and uppercase first: value.replace(/[^A-Za-z0-9]/g, '').toUpperCase()
^\d{10}$ References
Common questions
Will these pass my validation?
Yes — they are well-formed Kennitala values (000000-0000) and pass standard format checks, including the MOD 11 checksum.
Could one belong to a real person?
These are synthetic values. They are format-valid but not drawn from a guaranteed reserved range, so use them only for testing.
Can I generate many at once?
Increase the count, or use the free API and CSV/JSON export for large datasets.
For software testing only. These numbers are synthetic and must never be used
for real-world identification, applications, or to impersonate anyone.