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SHA-256 hash generator

Generate an SHA-256 hash of any text or file instantly in your browser. Free SHA-256 checksum calculator — nothing is uploaded.

🔒 Runs 100% in your browser — safe for real data

How to use the sHA-256 hash generator

  1. Type or paste your text, or drop a file.
  2. Read the SHA-256 hash at the top of the list.
  3. Copy it.

About this tool

SHA-256 produces a 256-bit (64 hex character) hash and is the modern standard for integrity checks, digital signatures, blockchains and software download checksums.

FAQ

Is my data sent to a server?

No. DevKnife tools run entirely in your browser with JavaScript. Nothing you paste — API keys, tokens, customer data — is transmitted or logged, so it is safe for production data.

How long is an SHA-256 hash?

64 hexadecimal characters (256 bits).

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