Hash Identifier
Identify the likely hashing algorithm used to generate a hash string, based on its length and character set.
About the Hash Identifier
Cryptographic hash algorithms always produce output of a fixed length, so the length of a hash string (and whether it's purely hexadecimal) is a strong clue to which algorithm generated it.
How it works: The tool checks the string's length and character set against known fixed output sizes — 32 hex characters for MD5, 40 for SHA-1, 64 for SHA-256, 128 for SHA-512 — and checks common prefixes like $2a$ for bcrypt.
This is a length-based heuristic, not a cryptographic analysis, so several algorithms can share the same output length (for example MD5 and NTLM are both 32 hex characters) — it narrows down the possibilities rather than giving a certain answer.