Cryptographic hash functions transform any input into a fixed-length string of characters. They're one-way functions — you can compute a hash from input but can't reverse it. Hashes are used for password storage, file integrity verification, digital signatures, and blockchain. This tool generates hashes using multiple algorithms so you can compare and verify.
How to Use
Enter text to see hashes computed in all algorithms simultaneously:
- MD5: 128-bit, fast but broken for security
- SHA-1: 160-bit, deprecated for security use
- SHA-256: 256-bit, current standard (Bitcoin, TLS)
- SHA-512: 512-bit, highest security for general use
Algorithm Security Status
- MD5: ❌ Broken — collision attacks demonstrated in 2004
- SHA-1: ⚠️ Deprecated — first collision found by Google in 2017
- SHA-256: ✅ Secure — used in Bitcoin, TLS 1.3, code signing
- SHA-512: ✅ Secure — used in high-security applications
Where Hashes Are Used
- Password storage: Websites store hashes, not passwords
- File verification: Download checksums verify integrity
- Git: Every commit is identified by its SHA-1 hash
- Blockchain: Bitcoin uses double SHA-256 for mining
Step-by-Step Instructions
- 1Enter text in the input field.
- 2View all hash outputs (MD5, SHA-1, SHA-256, SHA-512) instantly.
- 3Copy any hash value with one click.
- 4Use the comparison tool to verify two hashes match.
- 5Check the security rating for each algorithm.