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Hash Generator

Generate SHA-1 / SHA-256 / SHA-384 / SHA-512 hashes.

Online hash generator

A hash turns data of any length into a fixed-length "fingerprint", commonly used for file integrity checks, password storage and digital signatures. This hash generator uses the browser-native Web Crypto API and supports SHA-1, SHA-256, SHA-384 and SHA-512 — fast, secure, and nothing is uploaded.

How to use

  1. Paste text into the input box.
  2. Choose the hash algorithm (SHA-256 or higher recommended).
  3. Click Generate to get the hex hash, which you can copy in one click.

Common use cases

  • Verify a downloaded file is intact and untampered.
  • Check whether two pieces of content are identical.
  • Learn and test hash algorithms.

Note: in practice, storing passwords should not use a plain hash — combine a salt with a purpose-built algorithm like bcrypt or Argon2.

Frequently Asked Questions

Why is there no MD5?

MD5 has long been proven insecure, and the browser-native Web Crypto API does not provide it for security reasons. This tool uses the safer SHA family instead.

Can a hash be reversed to the original?

No. Hashing is a one-way function — you cannot recover the input from the output, which is exactly why it is used for password storage and integrity checks.

Does the same input always give the same hash?

Yes. The same input with the same algorithm always produces the same hash; changing a single character changes the result completely.

Is my input safe?

Yes. Computation uses the browser-native Web Crypto API and runs locally; your input is never uploaded.

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