What does this tool do?
| Direct answer | SHA-1 Generator computes the 160-bit SHA-1 digest, shown as 40 hex characters. |
| Key fact | SHA-1 collisions are practical today (SHAttered, 2017) — prefer SHA-256 for security. |
| Processing | Runs locally in your browser; no data is sent to a server. |
How to use
- Type or paste text.
- The SHA-1 hash updates live.
- Copy with one click.
Example
Input
abc
Output
a9993e364706816aba3e25717850c26c9cd0d89d
Who is this for?
This tool was built for people who need a fast answer in the browser — no install, no account, no data leaving the device.
Developers verifying file checksums, DevOps engineers generating secrets, and security students learning encoding basics — all without uploading data to a server.
Frequently asked questions
When is SHA-1 acceptable?
For non-security integrity checks like Git object IDs (Git is migrating too). Use SHA-256 elsewhere.
How long is a SHA-1 hash?
160 bits, written as 40 hexadecimal characters.
Does it hash files?
Text only here — hash files after reading them as bytes with a local script.