Hash Generator

What is a Hash?

A hash is a fixed-size string of bytes produced by a hash function. It's a one-way function, meaning you cannot reverse it to get the original text. Hashes are commonly used for data integrity verification, password storage, and digital signatures. Learn more about Hash Functions →

Hash Algorithms

• SHA-1: 160-bit hash (40 hex characters). Outdated, vulnerable to collision attacks.
• SHA-256: 256-bit hash (64 hex characters). Current standard for security-critical applications. Recommended.

Use Cases

• Verifying file integrity and detecting tampering
• Storing passwords securely (combined with salt)
• Creating digital signatures
• Generating checksums for downloads
• Blockchain and cryptocurrency applications

Security Note

For password hashing, use dedicated algorithms like bcrypt, scrypt, or Argon2. Never use MD5 or SHA-1 for passwords. Always use a cryptographic salt with hashing algorithms.