Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes from text.
What is a Hash Function?
A cryptographic hash function takes any input and produces a fixed-size output (the hash or digest). The same input always produces the same hash, but even a tiny change in the input creates a completely different output. This property is called the avalanche effect.
Algorithm Comparison
| Algorithm | Output Size | Security | Use Case |
|---|---|---|---|
| MD5 | 128 bits | Broken | Checksums, cache keys only |
| SHA-1 | 160 bits | Deprecated | Legacy systems only |
| SHA-256 | 256 bits | Secure | Digital signatures, SSL, blockchain |
| SHA-384 | 384 bits | Secure | Government, high-security systems |
| SHA-512 | 512 bits | Secure | Maximum security requirements |
Common Use Cases
- Verifying file integrity after downloads
- Generating checksums for data deduplication
- Creating cache keys for APIs and databases
- Comparing file contents without reading entire files
- Git commit hashes (SHA-1, migrating to SHA-256)
Features
- 5 algorithms: MD5, SHA-1, SHA-256, SHA-384, SHA-512
- Real-time hashing as you type
- Hash comparison to verify integrity
- Security indicators for each algorithm
- 100% client-side — your data never leaves your browser