Hash Generator

Enter text and click Generate Hashes.

A hash is a fixed-length fingerprint of input text

SHA hashes produce the same output for the same input and a very different output after even a small change. This tool uses the Web Crypto API to generate SHA-256, SHA-384, and SHA-512 in the browser for integrity checks, test data, and developer documentation.

Key concepts

One-way function

A hash is a comparison fingerprint, not encryption that can be decrypted back to the original.

Collision resistance

SHA-2 algorithms are designed to make matching hashes for different inputs impractical.

Browser-side output

The input is processed with Web Crypto and displayed as hexadecimal strings.

How to use

  1. Enter the text you want to hash.
  2. Click generate to create SHA-256, SHA-384, and SHA-512 outputs.
  3. Copy the algorithm result you need for checksums, fixtures, or notes.

Frequently asked questions

Can a hash be decoded back to text?

No. A cryptographic hash is one-way and is used for comparison, not recovery.

Can I store passwords with this directly?

No. Password storage needs salts and a dedicated slow password-hashing or KDF scheme.

Should I use SHA-256 or SHA-512?

Match your system requirement. SHA-256 is widely used for many integrity checks.

For authentication, password storage, or key management, use reviewed security designs instead of a plain hash alone.