🇮🇹 Codice Fiscale Validator & Calculator
Check whether an Italian Codice Fiscale is valid, decode the date of birth, sex and place of birth it contains, or calculate a code from personal data. Everything runs locally in your browser.
16 characters. Spaces and lowercase letters are accepted.
Any Italian municipality works: enter its 4-character cadastral code (Belfiore code), shown on official documents and on the ISTAT website.
ℹ️ This tool checks the format and check character of a code. It does not confirm that the code has been issued to a real person: only the Agenzia delle Entrate can do that.
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About the Codice Fiscale Validator
The Codice Fiscale is the Italian tax identification code assigned to every resident and to anyone dealing with the Italian administration. This free tool validates a Codice Fiscale, decodes the information it contains and calculates it from personal data.
It is useful for developers building forms, for e-commerce and registrar staff checking customer data, and for anyone who needs their code for an Italian contract, bank account or domain name (.it).
Key Features
- Check character validation: verifies the 16th character with the official odd/even table algorithm.
- Full decoding: date of birth, sex and place of birth (municipality or foreign country).
- Omocodia support: recognises codes in which digits were replaced by letters to avoid duplicates.
- Calculator: generates the code from surname, first name, sex, date and place of birth.
How to Use the Tool
- Step 1: Paste a Codice Fiscale into the validation field.
- Step 2: Click Validate to see whether it is valid and what it contains.
- Step 3: To calculate a code, fill in the personal data and the cadastral code of the place of birth.
- Step 4: Copy the result with the 📋 button.
Structure of a Codice Fiscale
| Characters | Meaning |
|---|---|
| 1–3 | Consonants (then vowels) of the surname |
| 4–6 | Consonants of the first name (1st, 3rd and 4th if there are 4 or more) |
| 7–8 | Last two digits of the year of birth |
| 9 | Month letter: A B C D E H L M P R S T (January → December) |
| 10–11 | Day of birth (+40 for women) |
| 12–15 | Cadastral code of the municipality, or Z + country code if born abroad |
| 16 | Check character |
Common Use Cases
- Checking customer data before invoicing an Italian company or individual
- Validating the registrant data required to register a .it domain name
- Testing form validation rules during web development
- Finding out your own code before an administrative procedure
Tips & Best Practices
- The year only has two digits: a person born in 1910 and one born in 2010 share the same year code, so the tool shows both possibilities.
- A calculated code may differ from the official one in case of omocodia: always rely on the tessera sanitaria or the Agenzia delle Entrate.
- Accents and apostrophes in names are ignored (D'Angelo → DNG).
Privacy & Security
All checks and calculations run locally in your browser with JavaScript. No code or personal data is sent to a server, stored or logged. You can even use the tool offline once the page is loaded.