SHA-1 Generator

How to generate a SHA-1 hash

1. Type or paste text, or choose a file. The SHA-1 hash appears in the table, along with the other common hashes.
2. To check a download, paste the published checksum into "Compare with": a match means the file is identical.
3. Copy the hash with its Copy button.

Frequently asked questions

What is SHA-1?

SHA-1 gives a 40-character hash. Like MD5 it is broken for security, but Git and older software still use it.

How do I get a SHA-1 checksum on my computer?

On Windows: certutil -hashfile file.zip SHA1. On a Mac: shasum -a 1 file.zip. On Linux: sha1sum file.zip.

Is my file uploaded?

No. The hash is calculated in your browser and nothing is sent anywhere.