Developer Tools
SHA-256 Generator
SHA-256: it computes the SHA-256 digest in your browser using the Web Crypto API, producing a 256-bit (64 hex-character) hash. Worked through below with real figures, and the calculator repeats the working on your own inputs — free, on-device, instant.
SHA-256 Generator helps you generate a hash or checksum. Enter your text or message to hash and it returns the digest as a hex string instantly, right in your browser with nothing uploaded.
Hashes are computed locally in your browser and nothing you enter is uploaded. MD5 and SHA-1 are fast but not collision-resistant, so do not use them for security. Verify security-critical digests with trusted, official tools.
About this tool
SHA-256 is easiest to get wrong in the setup, not the arithmetic. It computes the SHA-256 digest in your browser using the Web Crypto API, producing a 256-bit (64 hex-character) hash. It matters when a format, encoding or size has to be exactly right for the system reading it. The worked example on this page (The SHA-256 of 'abc' begins ba7816bf… (a 64-character hex digest). The same input always produces the same hash.) shows the full substitution; the calculator above runs the same working on your own numbers, in your browser, with nothing uploaded.
How to use
- Enter or paste the text to hash with SHA-256.
- Check that the text is exactly what you want.
- Run the generator to compute the SHA-256 digest.
- Copy the 64-character SHA-256 hash.
Why use the SHA-256 Generator
Instant
Each result is computed on your device the moment you run the tool.
Private
The text and numbers you enter stay in your browser and are never uploaded.
Free
No signup and no paywall to use any tool in this set.
Works offline
Once the page has loaded it keeps working on a weak or dropped connection.
Built for developers
Plain inputs and outputs you can copy straight into code, configs, or notes.
Honest by design
Conversions and heuristics are for everyday and learning use; verify security-critical output with trusted, official tools.
Common uses
Use it when generating a checksum
Use it when validating a backup
Use it for spotting accidental corruption
Use it for cache-busting keys
Use it for quick hash comparisons
Use it for everyday checksum reference
Technical notes
SHA-256 Generator computes the SHA-256 digest in your browser using the Web Crypto API, producing a 256-bit (64 hex-character) hash.
Results are reference values; validate against your own environment before relying on them in production.
Nothing you type is uploaded — the calculation happens entirely on your device.
Worked example
The SHA-256 of 'abc' begins ba7816bf… (a 64-character hex digest). The same input always produces the same hash.
FAQ
How long is a SHA-256 digest?
SHA-256 outputs 256 bits, written as 64 hexadecimal characters.
Is SHA-256 suitable for security uses?
It is a strong general-purpose hash for integrity and fingerprints, though passwords still need a dedicated, slow password hash.
Does it handle Unicode text?
Yes. Text is encoded as UTF-8 before hashing, so any Unicode characters are included correctly.
Is the input uploaded to a server?
No. The SHA-256 digest is calculated in your browser and your text is never sent away.