Hash Generator - MD5, SHA-1, SHA-256, SHA-512
Free online hash generator for developers. Generate MD5, SHA-1, SHA-256, SHA-512, and HMAC hashes instantly in your browser. Perfect for checksums, file integrity, and password hashing.
Security Notice
For security-critical applications: MD5 and SHA-1 are considered cryptographically weak and should not be used for password hashing or security-sensitive applications. Use SHA-256 or SHA-512 for better security. For password storage, consider using specialized algorithms like bcrypt, scrypt, or argon2 in your application backend.
How to Use This Hash Generator
Using our hash generator is simple. First, select your desired hash algorithm from the available options: MD5, SHA-1, SHA-256, or SHA-512. Each algorithm produces different length hashes with varying security levels. Then choose whether to hash text or a file. For text input, simply type or paste your content, and the hash will be generated automatically. For file input, either drag and drop a file or click to browse your computer.
For added security, you can enable HMAC (Hash-based Message Authentication Code) mode by checking the HMAC checkbox and entering a secret key. HMAC adds cryptographic authentication to your hash, making it suitable for verifying data integrity and authenticity. Once your hash is generated, you can copy it to your clipboard, download it as a text file, or save it to your local history for future reference.
All hashing happens entirely in your browser using the Web Crypto API. Your data never leaves your device, ensuring complete privacy and security. No account registration, no data storage on our servers, no tracking – just fast, secure hashing whenever you need it.
Common Use Cases for Hash Generation
Hash functions are cryptographic algorithms that transform input data of any size into a fixed-size output (the hash). They're fundamental to modern security and data integrity verification. Common use cases include file integrity checking (comparing checksums to verify downloads haven't been corrupted), password storage (storing hashed passwords instead of plaintext), digital signatures, and data deduplication.
Developers use hash generators to verify file integrity after downloads or transfers, generate unique identifiers for data, implement caching mechanisms, check for duplicate content, and debug authentication systems. Security professionals use them during penetration testing, forensic analysis, and when comparing file hashes against known malware databases. System administrators use hash verification to ensure software packages and updates haven't been tampered with.
Different hash algorithms serve different purposes: MD5 (128-bit, fast but cryptographically broken), SHA-1 (160-bit, deprecated for security), SHA-256 (256-bit, currently recommended), and SHA-512 (512-bit, maximum security). HMAC mode adds a secret key to the hashing process, making it suitable for API authentication, message integrity verification, and secure token generation.
Why Use Our Hash Generator?
Privacy First
Your data never leaves your browser. All hashing happens client-side using the Web Crypto API, ensuring complete privacy and security for sensitive data and files.
Lightning Fast
Instant hash generation using native browser APIs. Handles large files efficiently. Supports multiple algorithms and HMAC mode. Works offline once loaded.
Reliable & Free
No signup, no payment, no limitations – completely free forever. Built with Web Crypto API for secure, standard-compliant hashing.
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