Hash Identifier
Automatically identify the algorithm type of a hash value. Supports 30+ hash formats including MD5, SHA-1, SHA-256, SHA-512, bcrypt, and Argon2.
Hash Identifier
Enter a hash value to identify automatically
| Algorithm | Length | Bits | Example |
|---|---|---|---|
| MD5 | 32 chars | 128 bits | d41d8cd98f00b204e9800998ecf8427e |
| SHA-1 | 40 chars | 160 bits | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA-256 | 64 chars | 256 bits | e3b0c44298fc1c149afbf4c8996fb924... |
| SHA-512 | 128 chars | 512 bits | cf83e1357eefb8bdf1542850d66d8007... |
| bcrypt | 60 chars | – | $2a$10$N9qo8uLOickgx2ZMRZoMy... |
What is Hash Identifier?
Hash Identifier is a tool that analyzes what algorithm was used to generate an input hash value. It automatically identifies various hash algorithms including MD5, SHA-1, SHA-256, bcrypt, and Argon2 based on length, character patterns, and format.
Useful for determining the type of hash found in databases or confirming hash algorithms during security analysis.
Key Features
- Real-time Identification – Instantly displays possible algorithm list upon hash input
- Multiple Algorithm Support – MD5, SHA family, bcrypt, Argon2, MySQL, and more
- Confidence Display – Shows match probability as percentage for each algorithm
- Security Level Display – Indicates security level of each hash algorithm
- Detailed Information – Provides bit count, common usage, and descriptions
- Clipboard Paste – Easy hash input with one-click paste button
How to Use
- Enter Hash – Enter or paste the hash value you want to identify in the input field.
- Auto Analysis – Instantly analyzes length, character type, and format upon input.
- View Results – Possible hash algorithms are displayed sorted by confidence.
- Check Details – Review each algorithm’s security level, bit count, and usage.
Supported Hash Algorithms
- MD5 – 32 chars, 128 bits. Used for file checksums (not recommended for security)
- SHA-1 – 40 chars, 160 bits. Used for Git commit hashes
- SHA-256 – 64 chars, 256 bits. Most widely used secure hash
- SHA-384 – 96 chars, 384 bits. For high security requirements
- SHA-512 – 128 chars, 512 bits. Highest level security
- bcrypt – 60 chars, special format. For password storage (recommended)
- Argon2 – Variable length. Latest password hash (recommended)
- MySQL5 – 41 chars, starts with *. MySQL passwords
- CRC32 – 8 chars, 32 bits. For error detection
Who Needs This
- Security Analysts – Identifying hash types during incident analysis
- Developers – Checking password hash algorithms in databases
- System Administrators – Understanding hash formats in legacy systems
- CTF Participants – Hash analysis in security competitions
- Learners – Learning about various hash algorithms
Privacy Protection
This tool runs 100% in your browser. Hash values you enter are not sent to any server, and all analysis is performed only on your device. All data is deleted when you close the browser.
Frequently Asked Questions
Can the hash identifier decrypt hashes?
No, this tool is for identifying the type of hash. Hashes are one-way functions, so mathematically recovering the original data is impossible. The hash identifier only analyzes which algorithm was used to generate the hash.
How do you distinguish hashes of the same length?
Hashes of the same length (e.g., MD5 and NTLM are both 32 characters) are difficult to distinguish precisely. The tool displays all possible algorithms with confidence scores, giving higher scores to more commonly used algorithms. Final determination should consider the hash’s source or context.
How do you identify bcrypt and Argon2?
bcrypt starts with $2a$, $2b$, or $2y$, and Argon2 starts with $argon2. Thanks to these unique prefixes, they can be identified with nearly 100% accuracy.
Is 100% confidence a definite result?
Hashes with unique formats like bcrypt or Argon2 show high accuracy, but for standard hexadecimal hashes, the algorithm cannot be 100% confirmed by format alone. The confidence score is an estimate combining length, pattern, and common usage frequency.