Heuristic hash identification
Many algorithms share digest lengths, so identification is educated guessing from charset and length (plus known prefixes like bcrypt). Always confirm with context from the system that produced the hash.
Hash Identifier
Paste a hash string to see candidate algorithms ranked by confidence. Useful for triage—not cryptographic proof of how a hash was made.
Heuristic guess from length and charset — not a cracker.
How it works
- 1
Paste or type the value to check.
- 2
Select the document/format type if the tool has modes.
- 3
Read the valid / invalid result — checksum success is not the same as official registry status.
Why use this tool
- Runs entirely in your browser — nothing is uploaded to a server.
- 100% free, no sign-up, no limits.
- Works in any modern browser — no app install, no extension, no account.
How to use Hash Identifier
Enter a value in Hash Identifier to test format and check digits. A “valid” result means the value passes algorithmic checks — not that it exists in an official database.
Tips for better results
Strip spaces if the tool expects digits only. Never use test generators to impersonate real people or companies.
Privacy and offline-friendly processing
Whenever possible, Hash Identifier processes your data locally with JavaScript in this page. That means drafts, secrets, and unfinished work stay on your device by default. Prefer this workflow when you do not want to upload sensitive text, tokens, passwords, or files to a third-party service.
Frequently asked questions
Can this crack a hash?
No. It only suggests possible algorithms. It does not reverse or brute-force hashes.
Why multiple candidates?
Different algorithms can produce digests of the same length (for example several 32-character hex hashes).
Is my data uploaded when I use this tool?
For most FlyUtils tools, no. Processing happens in your browser with JavaScript. If a tool ever needs a server, that will be stated clearly on the page.
Is Hash Identifier free to use?
Yes. Hash Identifier is free, with no sign-up and no artificial usage caps for normal personal and work use.
Does Hash Identifier work on mobile?
Yes. The page is mobile-first, so you can paste input, tweak options, and copy results from a phone or tablet.