Hash Generator
Generate SHA-256, SHA-384, SHA-512, SHA-1, and MD5 hashes online. Supports HMAC and file hashing.
What is Hashing?
A hash function converts input data of any size into a fixed-size string of characters called a hash or digest. Hash functions are one-way — you cannot reverse a hash to recover the original data. Even a single-character change in the input produces a completely different hash output.
Select your preferred algorithm (SHA-256, SHA-512, MD5, or others), enter text or upload a file, and click Generate. You can also enable HMAC mode by providing a secret key for message authentication. The tool generates results instantly using the browser's Web Crypto API.
Hashing is used for verifying file integrity after downloads, storing passwords securely in databases, generating digital signatures, creating content-addressable storage keys, and building blockchain data structures. HMAC hashing adds authentication and is widely used in API security and JWT token signing.
SHA-256 is the recommended general-purpose algorithm, producing a 256-bit (64-character hex) digest. MD5 and SHA-1 are considered cryptographically weak but remain useful for non-security checksums. SHA-512 offers stronger collision resistance for high-security applications.