Multi Hash Generator
Generate multiple hashes at once — MD5, SHA-1, SHA-256, SHA-512, and CRC32 from text or files. Uses Web Crypto API. Free online multi-hash generator tool.
Why Use a Multi Hash Generator?
When you need to generate multiple hash values for the same input, running separate tools for each algorithm is inefficient. A multi-hash generator computes all common hash algorithms simultaneously, saving time and ensuring consistency. This is especially useful for file verification, password hashing comparison, and security auditing where multiple hash formats are required.
Key Features
- Generate MD5, SHA-1, SHA-256, SHA-512, and CRC32 hashes all at once
- Show all results simultaneously in a clean table layout
- Individual copy buttons for each hash and Copy All button
- File hash support: drag & drop or browse files to hash
- Uses Web Crypto API (SubtleCrypto) for SHA algorithms — fast and secure
How It Works
- Enter text in the input field or drag & drop a file
- All five hash algorithms are computed simultaneously
- Results appear instantly in a table with algorithm name and hash value
- Copy individual hashes or all hashes at once with one click
Technical Details
This tool uses the Web Crypto API (window.crypto.subtle.digest) for SHA-1, SHA-256, and SHA-512 computations, which provides hardware-accelerated hashing where available. MD5 is implemented in pure JavaScript since it is not supported by SubtleCrypto. CRC32 uses the standard polynomial 0xEDB88320 with bitwise operations. All processing is 100% client-side with zero server communication.
Frequently Asked Questions
Which hash algorithm should I use?
For security purposes, use SHA-256 or SHA-512. MD5 and SHA-1 are considered cryptographically broken and should only be used for non-security purposes like checksums. CRC32 is a checksum algorithm, not a cryptographic hash, and is used for error detection.
Can I hash files instead of text?
Yes! Drag and drop any file onto the drop zone, or click to browse and select a file. The tool reads the file contents and computes all five hashes. For very large files, the content is read as text.
Is my data sent to any server?
No. All hashing is done entirely in your browser using the Web Crypto API for SHA algorithms and client-side JavaScript for MD5 and CRC32. Your data never leaves your device.
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