Hash Generator

What Is a Hash Function?

A cryptographic hash function converts input of any length into a fixed-length string of characters. The same input always produces the same hash, but even a tiny change in input completely changes the output. Hashes are used for password storage, file integrity verification, digital signatures, and generating unique identifiers.

Supported Algorithms

This tool supports MD5 (128-bit, legacy but still common for checksums), SHA-1 (160-bit, deprecated for security but used in Git and older systems), SHA-256 (256-bit, the current standard for security-critical applications), and SHA-512 (512-bit, used when stronger collision resistance is needed). SHA-256 and SHA-512 are computed using the Web Crypto API for cryptographic security.

Common Use Cases

Hashes are used to verify file downloads haven't been tampered with, to store passwords securely (never in plain text), to generate cache keys, to deduplicate data, to create digital signatures, and to produce unique identifiers for content-addressed storage systems like Git and IPFS. This tool processes everything locally in your browser, so sensitive inputs never leave your device.