SHA-256 and SHA-512 text hash generator
Create a deterministic hexadecimal digest in this browser. Hashes are one-way fingerprints, not encryption.
Text may be empty and is limited to 64 KB after UTF-8 encoding.
How a cryptographic hash works
The same bytes and algorithm produce the same digest. A small text change normally produces a very different result, and the original text cannot be recovered from the digest.
Do not use a plain hash for passwords
SHA-256 and SHA-512 are fast general-purpose hashes. Password storage needs a salted, deliberately slow password-hashing function such as Argon2, scrypt, bcrypt or PBKDF2.
Local Web Crypto
Hashing begins only after you click the button. Input and digest are not sent, stored, added to the URL or shared with analytics.
Frequently asked questions
Does this tool send my input to a server?
No. The tool runs in this browser after you choose to use it. Your pasted content or generated result is not added to URLs, storage, analytics or server requests.
Does a clean result guarantee that an email or account is safe?
No. These tools explain technical clues and reduce routine risk, but they cannot replace your judgment, malware protection, account security controls or advice from a qualified security professional.
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