Hash Generator (SHA)
Compute SHA-1, SHA-256, SHA-384 and SHA-512 with Web Crypto, in hex or Base64, optionally all at once.
Runs in your browser: input and output are never sent to the server, and the platform does not store your input.
Output
Fill in the fields on the left, then run.
How to use
- 1Paste the text to hash; it is encoded as UTF-8 before hashing.
- 2Pick an algorithm and output encoding, or tick the box to show them all.
- 3Copy the result to compare against a checksum.
FAQ
Why is there no MD5?
The browser's Web Crypto does not implement it. Rather than bundling an implementation, the tool leaves it out — MD5 is unfit for anything new. To read an existing MD5 checksum, use a command-line tool.
Why is SHA-1 still here?
Reading existing data still needs it — git object ids, for one. It has practical collision attacks, so never use it for signatures or integrity checks.
Can I use this to store passwords?
No. The SHA family is designed to be fast, which is exactly what makes brute-forcing easy. Use bcrypt, scrypt or Argon2, which are deliberately slow and salted.
Can it hash a file?
Only text for now. For files, use your system's own command (shasum -a 256 on macOS and Linux, CertUtil on Windows).
Is my input uploaded?
No. Hashing uses the browser's built-in Web Crypto; the input never leaves your device.