Hash Generator

Generate SHA-1, SHA-256, SHA-384, SHA-512, and HMAC hashes from text or files.

Text

CRC32 · SHA-1 · SHA-256 · SHA-384 · SHA-512

Paste an expected hash — it lights up the matching row above.

All hashing happens locally with the Web Crypto API — nothing is uploaded.

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Hash Generator FAQ

Is my text or file uploaded anywhere?
No. Hashes are computed in your browser with the Web Crypto API, so the input never leaves your device.
Which algorithms are supported?
SHA-1, SHA-256, SHA-384 and SHA-512, plus a CRC32 checksum and keyed HMAC variants of the SHA family.
How do I compute an HMAC with a hex or Base64 key?
Open the HMAC tab and switch the key encoding to Hex or Base64; the message can be Text or Hex. Results are checked against the RFC 4231 test vectors for HMAC-SHA-256 and HMAC-SHA-512.
Why is there no MD5?
The Web Crypto API does not implement MD5 because it is broken for security purposes. Use SHA-256 for integrity checks instead.
How do I verify a download checksum?
Drop the file in, paste the expected hash from the publisher, and the matching algorithm row is highlighted when the values agree.