Cryptographic hash functions convert data of any size into a fixed-length string of characters. Our free Hash Generator supports SHA-1, SHA-256, SHA-384, and SHA-512 algorithms, using the Web Crypto API for secure, browser-based hashing.
Hash functions are one-way — you cannot reverse a hash to find the original input. They are used for data integrity verification, password storage, digital signatures, and content-addressable storage. Even a tiny change in input produces a completely different hash.
You can hash both text and files directly in your browser. The Web Crypto API provides hardware-accelerated hashing that is fast even for large files. No data is ever sent to any server.