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Hash Generator

Generate SHA-1 and SHA-2 digests for text using the browser Web Crypto API. Input stays on your device, and hexadecimal results are ready to copy.

Hash Generator Documentation

A hash function is a mathematical function that converts input data into a fixed-size string of characters. The output, known as a hash value or digest, is unique to the input data.

Supported Hash Algorithms

SHA-256 (Default)

  • 256-bit (32-byte) hash value
  • Part of the SHA-2 family
  • Widely used in security applications and digital signatures
  • Considered cryptographically secure

SHA-512

  • 512-bit (64-byte) hash value
  • Provides even more security than SHA-256
  • Ideal for high-security applications
  • More computationally intensive

SHA-384

  • 384-bit (48-byte) hash value
  • Part of the SHA-2 family
  • Useful when a shorter digest than SHA-512 is preferred

SHA-1

  • 160-bit (20-byte) hash value
  • No longer considered cryptographically secure
  • Still used for non-security purposes like data integrity checks
  • Not recommended for password hashing or security-critical applications

Common Use Cases

  1. Data Integrity

    • Verify file integrity
    • Check for data corruption
    • Ensure data hasn't been modified

  2. Checksums

    • File verification
    • Error detection
    • Data validation

  3. Digital Signatures

    • Document signing
    • Code signing
    • Certificate validation

  4. Data Deduplication

    • Identify duplicate files
    • Content-based addressing
    • Caching systems

Security Considerations

  • Hash functions are one-way functions - you cannot reverse a hash to get the original input
  • Different inputs can produce the same hash (collision), but this is extremely rare with modern algorithms
  • For password hashing, use specialized functions like bcrypt, Argon2, or PBKDF2
  • SHA-256 and SHA-512 are currently considered cryptographically secure

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Send the tool, not any text or files you entered. Input is never added to the share URL.

Where this comes from

Sources and standards

Links last checked August 13, 2026.

Step-by-step help

Guides that use this tool

Why a Subresource Integrity Hash FailsChanged CDN bytes, a missing crossorigin attribute, algorithm selection, and other causes of an integrity error.OAuth PKCE: code_verifier, code_challenge, and S256Verifier requirements, why S256 beats plain, and how PKCE differs from the state parameter.

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