SHA Hash Generator

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text or files, using the browser Web Crypto API. Free, instant, nothing uploaded.

Algorithm

Compare with a known checksum

Uppercase output

Input

Result

The result appears here as you type.

What this tool is for

The SHA family, computed by the browser native crypto implementation rather than a JavaScript reimplementation, which means it is fast enough to hash a large file. SHA-256 is the default choice for integrity checks, signatures and blockchain-style identifiers.

How to use it

Enter text or drop a file.
Pick the variant: SHA-256 unless something specific requires otherwise.
Copy the digest or compare it with a published one.

Frequently asked questions

SHA-256 or SHA-512?

Both are secure. SHA-512 is often faster on 64-bit hardware and produces a longer digest, but SHA-256 is the wider default and interoperates with more systems.

Is SHA-1 still usable?

Only for legacy compatibility. A practical collision was demonstrated in 2017, and browsers and certificate authorities dropped it years ago.