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.
Example output
{
"valid": true,
"reason": "Valid CNPJ.",
"Formatted": "11.222.333/0001-81",
"Format": "Numeric",
"Establishment": "0001 (matriz)"
}