Personal Code to Birthday

Converts personal identification codes from various countries into birthdate.

Automatic Birthdate Extraction: Effortlessly extracts birthdates from national ID codes.
Built-in Validation: Confirms personal code validity using checksum verification before returning a date.
Country-Agnostic: Automatically identifies and processes the country format, requiring no additional parameters.
Lightweight & Seamless Integration: Designed for easy integration into any project with minimal setup.

Date Range Restriction: Only supports personal codes issued from 1900 to the present. Future-dated codes are not currently supported.

npm install @remato/personal-code-to-birthday

const birthday = personalCodeToBirthday('39309262855')

console.log(birthday) // outputs { day: 26, month: 9, year: 1993 }

Need support for a new country or have feedback? Create an issue.

In Ukraine, the first five digits of the code indicate birthdate as days since January 1, 1900
Lithuania and Estonia use a nearly identical personal code system.
Estonia's personal code used to include hospital where the person was born.
Denmark dropped the check digit in 2007 due to running out of available numbers.
Latvia removed the birthdate component from their new personal codes starting in 2017.
In Sweden, individuals who turn 100 receive a new personal code, where “-” is replaced by “+”.
Norway plans to remove gender and century indicators from personal codes in 2032.
Finland’s personal codes include both numbers and letters for the checksum.
Romania’s personal code includes a county indicator.
Poland’s system differentiates centuries by altering the month digits.

Created by the Remato team to auto-complete birthdate entries based on the construction worker’s personal ID input (country unknown).

rematocorp/personal-code-to-birthday