Free Online SHA-256 Hash Generator

SHA-256 hash generator: get the SHA-256 hash of any text instantly, in hex or Base64, with examples and security notes.

Generator

MD5, SHA-256, SHA-3, BLAKE2, RIPEMD-160 & 12 More

17 hash and checksum algorithms, with a choice of output format

Results are provided for informational purposes only and may contain errors. Please verify important information independently. Use of this tool is at your own risk.

How to generate SHA-256 hashes

Generate the SHA-256 hash of any text instantly: type or paste text and the SHA-256 digest appears as you type, in lowercase hex, uppercase hex or Base64.

  1. Type or paste your text into the box above.
  2. The SHA-256 hash appears right away: the SHA-256 of hello is 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824.
  3. Copy the hash, or switch between 17 algorithms and three output formats.

Is SHA-256 secure?

SHA-256 is secure and the standard choice today. For passwords, use a slow password hash such as bcrypt or Argon2 instead of any plain hash.

SHA-256 hash examples

TextSHA-256
""e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
hello2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
Hello185f8db32271fe25f561a6fc938b2e264306ec304eda518007d1764826381969
hello worldb94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
4Dev.Netda9f5700140f7637141fceb9b0e248091314e5ed382c75dcb61f1e68c61172da

What is SHA-256?

SHA-256, part of the SHA-2 family, produces a 256-bit hash, shown as 64 hex characters. It secures TLS certificates, Bitcoin and software downloads.

Frequently asked questions

Can SHA-256 hashes be reversed?

No. A hash is a one-way function: it can't be turned back into the text. Short, common inputs can still be found in lookup tables, which is why a plain hash must never store passwords.

Why does changing one letter change the whole hash?

Hash functions are designed so that any change to the input, even one bit, produces a completely different result. That makes them good for detecting changes.

Does the text encoding matter?

Yes. The hash is computed from the UTF-8 bytes of the text. Other tools that use a different encoding or add a line break at the end will give a different hash.

Is this tool free?

Yes, it's free to use. No signup, no email required. Get results on this page.

How do I get my result?

Use the tool on this page. Your result appears here; no email delivery is required.