Cadastro de Pessoas Físicas generator (Brazil)
A Brazilian CPF is an eleven-digit taxpayer number formatted 000.000.000-00 with two MOD-11 check digits. These test values are synthetic but carry valid check digits.
Synthetic · not collision-guaranteed Validate a number →
605.992.674-61
Synthetic CPF with valid check digits; Brazil publishes no reserved test range.
Format specification
| Identifier | Cadastro de Pessoas Físicas (CPF) |
|---|---|
| Country | 🇧🇷 Brazil |
| Format | 000.000.000-00 |
| Length | 11 characters |
| Checksum | MOD 11 |
| Example | 729.136.335-79 |
| Safe strategy | Synthetic |
| Data quality | Verified against sources |
Cadastro de Pessoas Físicas: what each part means
| 000.000.00 | Eight-digit base number assigned by the Receita Federal. |
|---|---|
| 0 | Ninth digit: the fiscal region that issued the number (e.g. 8 = São Paulo, 7 = Rio de Janeiro/Espírito Santo). Test values use a random digit. |
| 00 | Two check digits, each a weighted MOD-11 over the preceding digits. All-same-digit numbers (e.g. 111.111.111-11) are invalid even though they pass the arithmetic. |
Validation regex
Matches the canonical value — strip separators and uppercase first: value.replace(/[^A-Za-z0-9]/g, '').toUpperCase()
^\d{11}$ References
Common questions
Will these pass my validation?
Yes — they are well-formed Cadastro de Pessoas Físicas values (000.000.000-00) 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.