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Hash Generator

Generate cryptographic hashes from text using MD5, SHA-1, SHA-256, and SHA-512 algorithms. Perfect for password hashing, data verification, checksums, and security applications. All calculations are performed locally in your browser.

MD5 (128-bit)

Generate a hash by entering text above

SHA-1 (160-bit)

Generate a hash by entering text above

SHA-256 (256-bit)

Generate a hash by entering text above

SHA-512 (512-bit)

Generate a hash by entering text above
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What is a Hash Function?

A cryptographic hash function is a mathematical algorithm that maps data of arbitrary size to a fixed-size string of bytes. The output, called a hash or digest, is designed to be unique for each unique input.

Available Hash Algorithms

MD5 (128-bit)

Message-Digest Algorithm 5 produces a 128-bit hash value. Fast but no longer considered secure for cryptographic purposes due to collision vulnerabilities. Still useful for checksums and non-security applications.

SHA-1 (160-bit)

Secure Hash Algorithm 1 produces a 160-bit hash. Deprecated for cryptographic security but still used in Git and some legacy systems. Better than MD5 but not recommended for new security applications.

SHA-256 (256-bit)

Part of the SHA-2 family. Produces a 256-bit hash and is currently considered secure. Widely used in SSL/TLS, Bitcoin, and modern security applications. Recommended for most use cases.

SHA-512 (512-bit)

The strongest algorithm in the SHA-2 family. Produces a 512-bit hash and offers the highest security level. Used when maximum security is required.

⚠️ Security Note: MD5 and SHA-1 are considered cryptographically broken and should not be used for security-sensitive applications. Use SHA-256 or SHA-512 for password hashing and data verification.

Common Use Cases

  • Password Storage: Hash passwords before storing (use SHA-256 or better with salt)
  • Data Integrity: Verify files haven't been tampered with
  • Checksums: Verify download integrity
  • Digital Signatures: Create unique identifiers for documents
  • Blockchain: Used in cryptocurrency mining and transactions
  • Caching Keys: Generate unique keys for caching systems

Hash Properties

  • Deterministic: Same input always produces same output
  • Fast: Quick to compute for any input
  • One-way: Cannot reverse to get original input
  • Avalanche Effect: Small input change creates completely different hash
  • Collision Resistant: Extremely difficult to find two inputs with same hash

Features

  • Real-time hash generation as you type
  • Four algorithm options: MD5, SHA-1, SHA-256, SHA-512
  • One-click copy to clipboard
  • All calculations performed locally (privacy-focused)
  • No data sent to server
  • Mobile-friendly interface