Hash Generator
Generate a SHA hash
A hash is a fixed-length, one-way fingerprint of your input — the same text always yields the same hash, but you can't reverse it. Type below to compute SHA-1, SHA-256, SHA-384, and SHA-512 at once, all in your browser via the Web Crypto API. For security use, prefer SHA-256 or stronger.
Frequently asked questions
What is a hash?
A fixed-length fingerprint of data from a one-way function. Same input → same hash, but you can't reverse it. Used for integrity checks and fingerprinting.
SHA-1 vs SHA-256?
SHA-256 produces a longer, secure 256-bit hash; SHA-1 (160-bit) is deprecated for security because collisions exist. Use SHA-256 or stronger.
Is my text sent to a server?
No — hashing runs in your browser via the Web Crypto API; your input never leaves your device.