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SHA Hash Generator
A hash turns any input into a fixed-length fingerprint. Change one character and the whole thing changes. Type text here to get four SHA variants at once, computed by your browser's own crypto engine.
How to use it
- Type or paste the text.
- All four hashes appear immediately and update as you type.
- Select and copy whichever one you need.
Examples
- CleverCat and clevercat produce completely unrelated hashes.
- SHA-256 always gives 64 hexadecimal characters, whatever the input length.
- An empty input still hashes — every SHA has a well-known value for the empty string.
Questions people ask
Can a hash be reversed?
Not by design. The only practical attack is guessing inputs and comparing, which is why short or common passwords fall quickly to dictionary attacks even under a strong algorithm.
Which one should I use?
SHA-256 for general integrity checks and signatures. SHA-1 is here for reading legacy systems only, as it has been broken for collision resistance and should not be used in anything new. For storing passwords, use a purpose-built function such as bcrypt or Argon2 rather than a plain hash.
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Updated: 2026-08-07