Hash Generator

How to use

1. Pick an algorithm. SHA-256 is the right default; MD5 and SHA-1 are for checking files someone else hashed.
2. Type or paste your text. The hash updates as you type.
3. To verify a download, paste the published checksum into the compare field and look for the match.
4. Copy the result, or switch algorithms to compare them side by side.

Features

• MD5, SHA-1, SHA-256, SHA-384 and SHA-512 from one input.
• Checksum comparison that ignores case and stray whitespace, because a pasted checksum has both.
• A plain warning on the algorithms that are no longer safe to trust.
• Runs entirely in your browser — the text never leaves the device.
• Correct on multi-byte text: Vietnamese, Japanese and emoji hash the same as any other tool.

Frequently asked questions

Is my text sent to a server?

No. SHA hashing uses the browser's built-in Web Crypto, and MD5 runs in the page. Nothing is uploaded, which is what makes this safe for anything sensitive.

Should I use MD5?

Only to check a file against a checksum someone published. MD5 and SHA-1 are both broken — two different inputs can be made to produce the same hash — so they must never protect a password, a signature or anything an attacker benefits from forging. Use SHA-256 for that.

Can I hash a password with this?

You can, but you should not store the result. A password needs a slow, salted algorithm such as scrypt, bcrypt or Argon2; a plain hash of a password can be reversed with a lookup table in seconds.

Why does my hash differ from another tool's?

Almost always a difference in the input rather than the algorithm: a trailing newline, different line endings, or text encoded as something other than UTF-8. This tool hashes exactly the characters you enter, encoded UTF-8.

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