{ } How to use

Paste or type your text.
Select Process to get the SHA-1 digest as hexadecimal.

{ } How it works

SHA-1 Hash works on the text you provide. Select Process ▸ and it runs entirely in your browser — nothing is uploaded to a server — then shows the result in the Output panel.

Input

Text input — paste or type your input in the left panel (use Sample for an example)

Output

TXT text — copy or download it from the Output panel.

{ } Common uses

Match a checksum from a tool or a system that still reports SHA-1.
Compute a Git-style object hash for comparison.
Verify a legacy fingerprint against the value you have.

{ } Limitations

SHA-1 is broken for collision resistance — two different inputs can be made to share a digest. Use it to match existing SHA-1 values, never to sign or secure anything new.
The text is hashed as UTF-8, and hashing is not encryption: there is no way to get the input back from the digest.

{ } FAQ

Is my data uploaded to a server?

No. Everything runs locally in your browser — your files never leave your device.

Can I process more than one file at once?

This tool works on one input at a time.

Is this tool free?

Yes — it’s completely free and needs no sign-up.

What should I use instead?

SHA-256 for a general-purpose digest, and a password hash such as bcrypt or Argon2 for passwords — a plain digest of any family is the wrong tool for those.