Hash Identifier (Hash Type Detector)
Identify the likely type of a hash from its prefix, length and character set: bcrypt, Argon2, MD5, SHA-1/2/3, CRC and more, with hashcat and John formats.
Identification is based on length, character set and prefix, so several types can share the same shape — the list is ranked by likelihood, not certainty. A dash means no mode is listed here; check the hashcat and John the Ripper documentation for your version.
| Hash | Type | hashcat | John |
|---|---|---|---|
| $2y$10$N9qo8uLOickgx2ZMR… | bcrypt | 3200 | bcrypt |
Faced with an unknown hash, the first question is: what made it? This identifier inspects a hash’s prefix, length and character set to list the most likely algorithms — from bcrypt and Argon2 to MD5, the SHA families, CRC and NTLM — and gives the matching hashcat mode and John the Ripper format so you can look it up. It runs in your browser.
How to use this tool
- Paste one or more hashes, one per line.
- Read the most likely type at the top.
- Check the full candidate list, since some types share a length.
- Use the hashcat mode or John format for further work.
Formula
Prefixed formats like $2b$, $argon2id$ and $6$ are matched directly. Raw hex is classified by length: 32 hex digits suggests MD5/NTLM, 40 suggests SHA-1, 64 suggests SHA-256, and so on.
Example
A value starting with $2y$10$ is identified as bcrypt, while a plain 32-character hex string is most likely MD5 (and could also be NTLM or MD4).
Frequently asked questions
Why does it list several types?
Many hashes look identical — MD5, NTLM and MD4 are all 32 hex characters. The tool ranks the most common first but cannot be certain from shape alone.
What are the hashcat and John columns?
They give the mode number (hashcat -m) and format name (John the Ripper) for that hash type, which you need when configuring those tools.
Can it identify a salted hash?
Sometimes, when the salt is attached in a recognised format such as hash:salt or a modular-crypt string. A bare salted hash with no structure cannot be told apart from an unsalted one.
Last updated:
Page address with these inputs: https://kakao.mobile/tools/hash-identifier/
Cite or embed this tool
kakaoCalc. (2026, November 8). Hash Identifier (Hash Type Detector). https://kakao.mobile/tools/hash-identifier/
“Hash Identifier (Hash Type Detector).” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/hash-identifier/.
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