CONVERTER

String to SHA-256

Generate the SHA-256 hash of any text instantly. Free online SHA-256 tool, plus when to use it (and when not to).

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Paste text and get its SHA-256 digest — a 64-character hex fingerprint used for integrity checks, signatures, and content addressing.

What SHA-256 is good for

SHA-256 has no practical collision attack, so it is the default for verifying file integrity, signing, and deduplication. The same input always yields the same digest; any change produces a completely different one.

Not for passwords

SHA-256 is fast, which is exactly wrong for passwords — attackers can try billions per second. Use a slow, salted KDF (bcrypt, scrypt, Argon2) for password storage instead.

Try it now — free, no signup

Use the hash generator in your browser. Then, when you need it at scale with an API key and higher limits, grab the full Eveses API.

Open the hash generator →Sign up for the full API

FAQ

Is SHA-256 reversible?›
No — it is one-way. You cannot recover the input from the digest.
Should I hash passwords with SHA-256?›
No. Use a slow salted algorithm like bcrypt or Argon2. Plain SHA-256 is too fast to be safe for passwords.

Related

String to MD5Generate the MD5 hash of any text instantly. Free online MD5 tool — plus why MD5 is fine as a checksum but broken for security.SHA-256 vs MD5: what is the difference?MD5 is fast but broken for security; SHA-256 is the modern default. Learn the difference and hash any text free with MD5, SHA-1, SHA-256/512.How to hash a stringHash any text to MD5, SHA-1, SHA-256 or SHA-512. Free online tool plus the code one-liner — and why you should not hash passwords this way.