Hash Generator

Hash functions turn input into fixed-length fingerprints. Developers use them to compare files, verify downloads, build cache keys, deduplicate content, fingerprint payloads, and store non-reversible checksums. A tiny change in the input produces a completely different output, which makes hashes useful for detecting accidental or malicious changes.

This tool calculates MD5, SHA-1, SHA-256, SHA-384, and SHA-512 simultaneously. SHA algorithms use the browser Web Crypto API. MD5 is included for legacy compatibility because older systems still publish MD5 checksums, but it should not be used for new security-sensitive designs. SHA-256 or SHA-512 are better choices for modern integrity checks.

Hashing happens locally in your browser. The input text is never sent to a server. For passwords, use a dedicated password hashing algorithm such as Argon2, bcrypt, or scrypt with salts and work factors; fast general-purpose hashes are not enough for password storage.