Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text, or HMACs with a secret key.

What is the Hash Generator?

A cryptographic hash turns any input into a fixed-length fingerprint. The same input always gives the same hash, and any change produces a completely different one.

How does it work?

SHA hashes and HMACs use the browser’s Web Crypto API. MD5 uses a verified JavaScript implementation for checksums. Text is hashed as UTF-8.

Example

SHA-256 of “abc” is ba7816bf…f20015ad.

Frequently asked questions

Is my data sent to a server?

No. This tool runs entirely in your browser; nothing you paste is uploaded or stored.

Can a hash be reversed?

Not directly, but short or common inputs can be guessed. Store passwords with slow algorithms like bcrypt or Argon2, not plain SHA or MD5.

Related tools

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