Hash Generator (SHA-256, SHA-1, SHA-512)

A cryptographic hash function turns any input — a word, a password, a file's contents — into a fixed-length string of hex characters called a digest. The same input always produces the same digest, but even a one-character change produces a completely different result, and you cannot reverse a digest back into the original text. This hash generator computes the SHA-256, SHA-1, and SHA-512 digests of whatever you paste, instantly and entirely in your browser.

Hashes are everywhere in software. SHA-256 verifies file downloads and underpins much of modern cryptography; SHA-512 is its longer, higher-margin sibling; and SHA-1, although no longer safe for security-critical signatures, still appears in Git object IDs and legacy systems. Pick the algorithm with the toggle and the digest updates as you type. Because the work is done locally with the browser's built-in Web Crypto API, your input never leaves your device, so it is safe to hash sensitive strings.

Developers use a hash generator to confirm a download matches its published checksum, to compare two pieces of text for an exact match without storing them, or to generate stable cache keys and content fingerprints. The output is the standard lowercase hexadecimal digest you can paste straight into a checksum comparison, a config file, or a test fixture. An empty input simply produces no output.