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SHA-256 Hash

Developer

Generate SHA-256 hashes from any text input with one-click copy. No data uploaded - runs entirely in your browser.

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SHA-256 Hash
SHA-256 -

Confirming a downloaded file hasn't been tampered with, or checking that a piece of text matches what it's supposed to be, means comparing hashes rather than the files or text themselves, since even a single altered byte produces a completely different SHA-256 output while the original content might look identical at a glance. This tool generates a SHA-256 hash from any text input directly in the browser, with nothing sent to a server, so a checksum can be computed and verified without the text or file itself needing to leave your machine at all.

See more about the SHA-256 Hash

Useful for generating a checksum to verify a piece of text hasn't been altered, computing a hash to compare against a published value before trusting a download, or getting a SHA-256 value for a password or a piece of data without it touching anything beyond your own browser.

Key features

  • Clean interface
  • Fast processing
  • No signup required
  • Works offline

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Quick answers for SHA-256 Hash

Does it hash automatically as I type?
Yes, there is no Generate button, the SHA-256 result updates live on every keystroke using the browser's crypto.subtle.digest.
What do the numbers above the result mean?
A small counter shows your input's character count and its byte count side by side, useful since multi-byte characters make those two numbers diverge.
Is my text sent to a server to compute the hash?
No, the hash is computed entirely in your browser using the Web Crypto API, nothing you type leaves your device.