CNPJ Validator (numeric & 2026 alphanumeric)
LiveValidate numeric and 2026 alphanumeric CNPJs.
All generated data is fictional and intended for development, testing, QA, prototyping, and automation only. Do not use it for fraud, impersonation, or illegal activity.
ValidValid CNPJ.
- Formatted
- 11.222.333/0001-81
- Format
- Numeric
- Establishment
- 0001 (matriz)
About this tool
Paste a CNPJ (formatted or raw) to check it. The validator accepts 12 base positions (A–Z, 0–9) plus 2 numeric check digits, recomputes the mod-11 digits over each character's ASCII−48 value — correct for both numeric and the 2026 alphanumeric format — and reports whether it is a headquarters (0001) or a branch. Technical validation only.
How it works
- Paste a CNPJ (formatted or raw) — numeric or the 2026 alphanumeric format.
- The validator recomputes the two mod-11 check digits over each character's value.
- Read the result — valid or invalid, and whether it is a headquarters (0001) or branch — locally in your browser.
Example output
{
"valid": true,
"reason": "Valid CNPJ.",
"Formatted": "11.222.333/0001-81",
"Format": "Numeric",
"Establishment": "0001 (matriz)"
}