Hash Generator
Generate SHA-256, SHA-512, and other cryptographic hashes instantly. All processing in your browser—100% private.
100% Private
All hashing happens in your browser using Web Crypto API. No data uploaded.
Secure Algorithms
Powered by browser's native Web Crypto API. Industry-standard algorithms.
Always Free
Professional-grade hash generator, completely free. No limits, no sign-up.
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About Cryptographic Hashing
What is a Hash Function?
A cryptographic hash function takes input data and produces a fixed-size string (hash) that uniquely represents that data. The same input always produces the same hash, but it's impossible to reverse the hash back to the original input.
Algorithm Comparison
- SHA-256: 256-bit, recommended for most uses
- SHA-512: 512-bit, maximum security
- SHA-384: 384-bit, balance of speed/security
- SHA-1: ❌ Deprecated (collision attacks)
- MD5: ❌ Broken (use SHA-256+)
Common Use Cases
- Password verification (with salt)
- Data integrity checks
- Digital signatures
- Blockchain and cryptocurrencies
Security Note
This tool uses the browser's native Web Crypto API. For password storage, always use a dedicated password hashing algorithm like bcrypt, scrypt, or Argon2 with proper salting.