SHA-1
SHA-1 digest.
How to use SHA-1
SHA-1 — Compute a SHA-1 digest and print it as 40 lowercase hex characters. SHA-1 is deprecated for security. Free to use in D2i DevTools — no account required.
Steps
- Fill in Input. This field is required.
- Click Run and copy the result under the form.
Frequently asked questions
What is SHA-1 used for?
Use it to compare a legacy Git object id or an old checksum. Use SHA-256 for anything new that must resist attacks.
How do I use the free online SHA-1 tool?
Fill in Input. This field is required. Click Run and copy the result under the form.
What can I paste or upload into SHA-1?
Paste the text as UTF-8. The digest of abc is a9993e364706816aba3e25717850c26c9cd0d89d.
What output does SHA-1 give me?
40 hex characters. SHA-1 is one-way; this page does not crack or search for the input.
Is SHA-1 free, and is my input private?
Yes — Your input is processed in memory for this request only. It is not saved to disk or the database, and it is cleared after the tool finishes.
Is a Git commit SHA-1 the same as hashing the commit message here?
No. Git hashes a header plus the object bytes, not the message alone. Hashing the message on this page will not match the commit id.
Inputs are processed in memory only and are not saved to disk or the database. Data exists only for the duration of your request.