FinlandPersonal Identity Code
Also known as: personal identity code · HETU · Henkilötunnus
Specification
Format
This number has no simple display mask — its structure is defined by validation rules. See the references below for details.
- Length
- 11 characters
- Checksum
- Yes
Check digits are recomputed and verified.
- Embedded data
- Yes
A valid number encodes details such as birth date, gender, or region. The validator extracts them locally in your browser.
Ready to check a number?
Validate a Finland Personal Identity Code now — it runs in your browser and the number never leaves your device.
Try it in the validatorValidation rules for Finland come from the open-source idnumbers library. Report a format issue on GitHub