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SHA-256 hash generator

SHA-256 is the hash most download pages, Git and blockchain tools actually publish, so this page leads with it — paste text and get the SHA-256 digest immediately, with SHA-1, SHA-384 and SHA-512 computed alongside it for the rare case you need a different algorithm too.

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  • Works offline once loaded
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Matches one of the hashes below ✓

Hashing…
  • {{ algo }} {{ hashes[algo] || '—' }}

MD5 is not offered. The Web Crypto API browsers ship never implemented it — MD5 stopped being fit for security purposes years ago — so this tool sticks to SHA-1 and the SHA-2 family, all computed locally.

How to use this tool

  1. Paste your text

    The SHA-256 hash appears first, instantly, with the other SHA variants below it.

  2. Compare against a published hash

    Paste the expected SHA-256 into the compare box for a case-insensitive match check.

  3. Copy the hash

    One click copies just the 64-character hex digest.

Questions people ask

Why is SHA-256 the default choice today?

It sits at the sweet spot of being fast to compute, having no known practical collision attack, and being the algorithm most tooling (Git commit-object hashing since 2005-era design decisions, TLS certificates, package checksums, Bitcoin's proof-of-work) already standardised on — so it is usually the hash you actually need to match.

How long is a SHA-256 hash?

Always exactly 256 bits, shown here as 64 hexadecimal characters, regardless of whether the input text is one character or one megabyte. That fixed output length is what makes a hash useful as a fingerprint.

Can two different inputs ever produce the same SHA-256 hash?

In theory yes (a "collision"), but no one has ever found one, and doing so is considered computationally infeasible with current or foreseeable hardware — which is exactly why SHA-256 remains trusted for integrity checks.

Is this the same SHA-256 my terminal's sha256sum command produces?

For the same bytes, yes — this uses the browser's built-in Web Crypto implementation of the same standardised algorithm. The one difference to watch for: this tool hashes the text you paste, not a file's raw bytes, so line-ending differences (CRLF vs LF) between systems can change the result.

Is anything I paste here sent to a server?

No. The whole tool is JavaScript running in your browser, and this site has no endpoint that accepts text. That matters when what you are pasting is a real API payload, a customer record, or a password.

Related tools

Bookmark this page — the tool keeps working offline, and your settings stay in this browser. Built by Dynamb Technologies, who make software for a living.