Generate MD5, SHA-1, SHA-256, SHA-512 cryptographic hashes instantly. Verify file integrity, create checksums, secure passwords. 100% browser-based—your data never leaves your device.
Downloaded a file? Compare its SHA-256 hash against the publisher's checksum to ensure it wasn't corrupted or tampered with during download. Linux ISOs, software installers, and firmware updates always provide checksums.
Never store plain text passwords! Generate SHA-256 hashes for password storage. Even if your database leaks, attackers can't reverse the hash to get original passwords. Use with salt for production systems.
Need to check if two files are identical without comparing byte-by-byte? Generate MD5 hash for both. Same hash = identical files. Perfect for deduplication, backup verification, or finding duplicate photos.
Generate consistent unique IDs from text input. Hash user emails, device info, or content to create reproducible unique identifiers for databases, caching keys, or API tokens without storing original data.
Track file modifications by storing hashes. If hash changes, content changed. Git uses SHA-1 this way. Monitor config files, legal documents, or source code for unauthorized changes.
Need strongest cryptographic security? Use SHA-512 for digital signatures, certificate generation, or high-security password hashing. 512 bits makes collision attacks computationally infeasible.
| Algorithm | Hash Length | Security | Best For |
|---|---|---|---|
| MD5 | 128 bits (32 chars) | Weak | Checksums, non-security |
| SHA-1 | 160 bits (40 chars) | Deprecated | Legacy systems, Git |
| SHA-256 | 256 bits (64 chars) | Strong | Most use cases |
| SHA-512 | 512 bits (128 chars) | Maximum | High security needs |