🔐 Hash Identifier

How Hash Identification Works

Different hashing algorithms produce output of a fixed, predictable length and character set. By checking how many characters a hash has and whether it uses only hexadecimal digits or a wider character set, you can narrow down which algorithm likely generated it.

Common Lengths

Hexadecimal hashes are the most common: 32 characters usually means MD5, 40 means SHA-1, and 64 means SHA-256. Password-hashing schemes like bcrypt use a different, longer mixed-character format (typically 60 characters) that includes an embedded salt and cost factor rather than being a pure hex digest.

• This is a length-based heuristic, not a cryptographic analysis — several algorithms can share the same output length (e.g. MD5 and NTLM are both 32 hex characters).
• For certainty, check the source system or library that generated the hash.
• Provided for general computer security education.