Hash generator
Check that a downloaded file hasn’t been changed, or get the hash of any text.
Runs entirely in your browser. Nothing you type is sent anywhere.
How to use the hash generator
A hash is a fingerprint of the data: change one character and the hash changes completely. MD5 and SHA-1 are fine for checking downloads but no longer safe for security; use SHA-256 or stronger for that.
- Type text, or choose a file.
- All five hashes appear at once.
- To check a download, paste the checksum from the publisher’s site. The tool tells you if it matches.
Questions
Which hash should I use?
Use SHA-256 for checking files and for anything new. MD5 and SHA-1 are only here for matching old checksums; they aren’t safe against deliberate tampering.
Is my file uploaded?
No. The file is read and hashed by your browser.