Hash Generator

Generate SHA-256, SHA-1, SHA-384, SHA-512 or MD5 hashes of text or a file, and compare them with an expected checksum.

Your files stay on this device

Files are processed in your browser, never uploaded. The site downloads code and assets to run the tools. No accounts or trackers.

Use Download to save this tool as one HTML file for offline use.

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text to hash or hash a file

algorithm

digest (hex)

— digest —

expected hash (optional)

Try a worked example

Example

Choose SHA-256 and hash the three letters abc with no trailing newline. The digest is ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad. With MD5, the same text gives 900150983cd24fb0d6963f7d28e17f72.

Keep in mind

Changing a single byte gives a completely different digest, so a trailing newline or Windows line endings change the result. To check a download, choose the file, pick the algorithm the publisher used and paste their checksum into the expected hash box.

About this tool

Produce a hash (digest) of text or of a whole file, then paste a published checksum to confirm they match. SHA hashes use the browser's built-in Web Crypto API; MD5, which Web Crypto does not offer, is computed by a small built-in implementation. Files are read on your device and never uploaded.

Frequently asked questions

Which algorithm should I use?

SHA-256 is a good default. MD5 and SHA-1 still catch accidental corruption, so use them when a download page publishes only those, but they are broken against deliberate tampering.

Can I reverse a hash?

No. Cryptographic hashes are one-way functions; you cannot recover the original text from the digest.