CNPJ Tools — Validate, Generate & Lookup CNPJ
Free CNPJ tools: validate, generate for testing, lookup company data, and alphanumeric CNPJ support. 100% private.
CNPJ Validator — Instant Check
Validate any CNPJ number online in seconds. Check if a Brazilian company registration is valid — instant results, works on mobile and desktop.
CNPJ Generator
Generate valid CNPJ numbers for testing and development. Bulk generation, formatted or digits-only output. Built for developers and QA engineers.
CNPJ Formatter
Format CNPJ numbers (numeric and alphanumeric): add or remove mask. Supports the new Jul/2026 format.
Alphanumeric CNPJ Generator
Generate valid alphanumeric CNPJs in the new RFB format (IN 2.119/2022). The first free tool for the 2026 Brazilian company ID format — ready for your test suite.
Alphanumeric CNPJ Validator — New 2026 Format
Validate CNPJs in the new alphanumeric format (IN RFB 2.119/2022, effective Jul 2026). First free online validator for the new Brazilian company ID format.
Batch CNPJ Validator
Validate multiple CNPJs (numeric and alphanumeric) at once. 100% free and browser-based.
Batch CNPJ Generator
Generate multiple valid CNPJs (numeric and alphanumeric) for testing. 100% free.
CNPJ Lookup
Look up Brazilian company data by CNPJ: business name, CNAE, address, registration status and partners. Official Federal Revenue open data. Free lookup.
Everything About CNPJ - The Brazilian Business Registry
Free Online CNPJ Tools Hub
Our free online cnpj tools hub provides a fast and reliable way to accomplish your task without installing any software or creating an account. The tool works instantly in your browser, delivering accurate results with a clean, modern interface designed for efficiency and ease of use.
Key Features
- Fast, accurate, and completely free to use without limits
- No registration, download, or installation needed to get started
- Privacy-first design with all processing done locally in your browser
- Responsive layout for desktop, tablet, and mobile devices
- Dark mode support for comfortable viewing in any environment
- One-click copy and share for quick workflow integration
Built with modern web technologies, this tool delivers instant results without page reloads or server requests. All processing happens locally in your browser using JavaScript, ensuring your data never leaves your device and maintaining complete privacy even with sensitive information.
The interface is designed for simplicity and efficiency. Enter your input, get your result, and copy it with a single click. The tool handles edge cases gracefully and provides clear, helpful error messages when inputs are not valid, guiding you toward the correct format.
This is part of the facilita.tools collection of over 100 free online utilities. From document validators and generators to calculators, text tools, encoding utilities, and financial calculators, all designed with a premium, ad-free experience. Explore the full collection and find the perfect tool for every need.