Developer · free local utility
Create a deterministic SHA-256 digest for a text value without transmitting the input to a hashing service.
Paste text exactly as it should be hashed. Whitespace, line endings, and letter case all change the result.
A plain SHA-256 digest is not a safe password-storage scheme. Passwords need a slow, salted password-hashing algorithm.
Always verify the result in the system where you will use it. The page intentionally avoids accounts, uploads, and claims that go beyond the calculation it performs.
Yes, when the exact UTF-8 bytes are identical. A trailing newline or different character normalization changes the digest.
SHA-256 is designed as a one-way hash, but weak or predictable inputs may still be discovered through guessing or lookup tables.
No. Password storage should use a salted, deliberately slow algorithm such as Argon2id, scrypt, bcrypt, or PBKDF2 in a trusted application.