Hash Generator

Hash Generator Online — Free Tool

Generate MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, CRC32, and Adler-32 hashes instantly from any text input. 100% client-side with no data uploads. Features include file upload via drag-and-drop, searchable history, quick templates, and keyboard shortcuts.

Why Use a Hash Generator?

• Data Integrity: Verify file and data integrity using checksums
• Password Storage: Generate hashes for testing password hashing implementations
• API Development: Create hash-based API signatures and keyed-hash message authentication codes
• Digital Forensics: Generate hash values for evidence verification and chain-of-custody documentation
• Content Addressing: Create unique content identifiers for caching and deduplication

Supported Algorithms

• MD5: 128-bit hash (16 bytes) — fast but cryptographically broken; use only for non-security checksums
• SHA-1: 160-bit hash (20 bytes) — deprecated for security use; avoid for cryptographic applications
• SHA-224: 224-bit hash (28 bytes) — truncated SHA-256; suitable for space-constrained environments
• SHA-256: 256-bit hash (32 bytes) — industry standard; recommended for most applications
• SHA-384: 256-bit hash (48 bytes) — stronger alternative with SHA-512 security at reduced output
• SHA-512: 512-bit hash (64 bytes) — maximum security; ideal for high-assurance environments
• CRC32: 32-bit checksum (4 bytes) — fast, non-cryptographic; ideal for data integrity verification
• Adler-32: 32-bit checksum (4 bytes) — very fast; used in zlib and DEFLATE compression

How to Use

1. Type or paste text in the input field to generate hashes instantly
2. Upload a file using the Open File button or drag-and-drop a text file directly onto the input area
3. Copy individual hashes with the copy button on each result row, or use Copy All for all hashes
4. Download results as a text file for offline reference
5. Save to history with Ctrl+Enter to keep a searchable record of past hashes
6. Use templates from the sidebar for quick testing with common inputs
7. Keyboard shortcuts: Ctrl+O to open a file, Ctrl+L to clear input, Ctrl+Shift+C to copy all, Ctrl+D to download

Keyboard Shortcuts

Privacy & Security

All hashing happens in your browser using the Web Crypto API for SHA algorithms and client-side JavaScript implementations for MD5, CRC32, Adler-32, and SHA-224. Your input never leaves your computer. History is stored locally in your browser's localStorage and never transmitted.