Free SHA Hash Generator
Generate cryptographic hashes from any text using SHA-1, SHA-256, SHA-384, or SHA-512 — all computed locally in your browser using the Web Crypto API.
Supports SHA-1, SHA-256, SHA-384, and SHA-512 — all computed simultaneously with a single click.
Uses the browser's native Web Crypto API — the same cryptographic standard used by modern security software.
Your input text never leaves your browser. No server requests, no logging, no tracking.
Frequently asked questions
What is a hash function?
A hash function converts any input into a fixed-length string of characters. The same input always produces the same output, but the process is one-way — you cannot reverse a hash to get the original text.
What is SHA-256 used for?
SHA-256 is widely used for data integrity checks, digital signatures, certificate fingerprints, and password hashing (when combined with a salt).
Is SHA-1 still secure?
SHA-1 is considered cryptographically weak for security-critical uses like digital signatures. For general checksums and non-security use cases it is still fine. Prefer SHA-256 or higher for any security application.