Hash Generator - MD5, SHA-1, SHA-256 & SHA-512 Online
Hash Generator
MD5, SHA-1, SHA-256 & SHA-512
Understanding Hash Functions
File Integrity
Compare a hash against a published checksum to confirm a download wasn't corrupted or tampered with.
Git & Version Control
Git commit IDs are SHA-1 hashes of the commit's content, author, and parent — a good way to see the algorithm in action.
Deduplication
Hashing file contents is a fast way to detect duplicate files without comparing every byte.
Local Processing
Every hash is computed locally in your browser — your text is never uploaded to a server.
MD5 and SHA-1 Are Not Safe for Passwords
MD5 and SHA-1 are fast, general-purpose hash functions — that speed makes them excellent for checksums but a poor choice for storing passwords, since attackers can brute-force billions of guesses per second. Never use this tool (or any plain hash function) to store passwords; use a purpose-built, slow algorithm like bcrypt or Argon2 instead.
Key Takeaways
- One-Way Function: A hash cannot be reversed back into the original text.
- Deterministic: The same input always produces the exact same hash.
- Client-Side Only: All four hashes are computed entirely in your browser.