Free SHA-256 Hash Generator

Free tool · nothing is uploaded

Free SHA-256 generator

Paste text. This page hashes the UTF-8 bytes with SHA-256 and shows 64 hex characters. The text stays in your browser. This is a checksum, not a password hash.

The word hello and its SHA-256 hash, 64 hex characters beginning 2cf24dba.
The picture is the hash of the word hello. The box below hashes what you type.

SHA-256

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The hash stays in this browser.

How the hash is calculated

  1. The text is turned into UTF-8 bytes. A letter such as é is more than one byte, so café and cafe are different hashes.
  2. SHA-256 of those bytes is 32 bytes. This page writes them as 64 lowercase hex characters.
  3. The word hello is 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824.
  4. Empty text is e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855.
  5. The same text always gives the same hash. Changing one character changes the hash. The hash does not turn back into the text.

Use this to compare a file’s text or a short string. Do not use it to store a password. A password hash is slow and salted. This one is a single fast checksum with no salt. Do not paste a password you still use.

Questions about this generator

What is a SHA-256 hash?

A 256-bit checksum of the bytes you give it, written here as 64 lowercase hex characters. The same text always produces the same hash. A different text produces a different hash. The word hello hashes to 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824.

Is SHA-256 encryption?

No. A hash does not turn back into the original text. There is no key and no decrypt button. It is a checksum you can compare, not a locked message.

Can I store a password as this hash?

No. This is one fast hash of the exact UTF-8 bytes, with no salt. Password storage needs a slow password hash and a salt. Do not paste a password you still use.

Does this tool upload the text?

No. The text is hashed in the browser. Blogoose does not receive it.