Hash Identifier
Guesses which algorithm produced a hash from its length, charset and prefix, ranked by likelihood.
A 32-character hex string is MD5. It is also NTLM, MD4 and LM, and nothing in the string decides between them. This ranks every algorithm whose shape fits rather than pretending there is one answer.
The hash is analysed in your browser and never sent anywhere.
How to use it
Paste the hash
Whitespace and case do not matter. A structured hash — `$2y$…`, `$argon2id$…`, `*ABCD…` — is identified outright because the format names itself.
Use the context to choose
Where the hash came from settles what the string cannot. A 32-hex value out of a Windows SAM file is NTLM; the same value in a legacy PHP table is MD5.
Read the notes on each candidate
Each entry says why that shape matches and how commonly it means that algorithm, so a low-confidence guess is visibly a guess.
Common questions
Can it reverse the hash?
No. Identification only. A hash function is one-way by construction, and this tool holds no lookup table and consults no cracking service.
Why so many candidates for one string?
Because bare hex carries no type information. Length and charset are all there is, and several algorithms share them. Any tool that names one answer for a 32-hex string is guessing without telling you.
It says “unknown”.
Then the length or charset matches nothing known — often because the value is truncated, base64 rather than hex, or an application-specific format with a salt appended. Check what wrote it.
Feed it from
Text Hash
Computes MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC-32 of a string, with an uppercase and Base64 output option.
File Checksum
Hashes files of any size in a streaming pass and compares the result against a pasted expected value.
bcrypt & argon2 Checker
Hashes a password with bcrypt at a chosen cost and checks a password against an existing bcrypt hash. Detects argon2 but does not compute it.
Entropy Meter
Measures the Shannon entropy of a string or file and shows a byte histogram — useful for spotting keys.
Next
These accept what this tool produces, so the result can go straight in.
bcrypt & argon2 Checker
Hashes a password with bcrypt at a chosen cost and checks a password against an existing bcrypt hash. Detects argon2 but does not compute it.
Entropy Meter
Measures the Shannon entropy of a string or file and shows a byte histogram — useful for spotting keys.
File Checksum
Hashes files of any size in a streaming pass and compares the result against a pasted expected value.
Text Hash
Computes MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC-32 of a string, with an uppercase and Base64 output option.
Audio Converter
Converts between MP3, WAV, FLAC, AAC, OGG and Opus with bitrate and sample-rate settings.
Background Remover
Keys out a flat or single-colour background in OKLab and returns a transparent PNG, with a brush for fixing the edges.