Free Hash Generator – MD5, SHA-256, SHA-512 Online
Generate cryptographic hashes instantly, right in your browser.
ToolCraftr is a free online hash generator that creates MD5, SHA-256, SHA-512, and other cryptographic hashes directly in your browser. Our hash calculator supports 11 different algorithms and runs entirely client-side, ensuring your sensitive data never leaves your device. Perfect for developers, security professionals, and anyone needing fast hash generation.
Who is this hash generator for?
Developers verifying file integrity, generating checksums, or testing hash functions.
Security Professionals analyzing data signatures and validating hashes.
System Administrators comparing configuration files and verifying downloads.
Students & Researchers learning about cryptographic hash functions and algorithms.
Key Features
Everything you need from a modern hash generator.
11 Hash Algorithms
Supports MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, SHA3-224, SHA3-256, SHA3-384, SHA3-512, and RIPEMD-160.
Real-Time Generation
Hashes are generated instantly as you type. No need to click a button—see results immediately.
100% Client-Side
All hash computation happens in your browser using the Web Crypto API. Your data never touches our servers.
Easy Integration
Copy the hash with one click. Perfect for pasting into scripts, configuration files, or documentation.
Text to Hash
Hash any text input—passwords (for testing), API keys, configuration strings, or entire documents.
Privacy Guaranteed
We don't log, store, or track what you hash. Complete privacy for sensitive data.
How hash functions work
Cryptographic hash functions take arbitrary-length input and produce a fixed-size output (digest). The same input always produces the same hash, but even a tiny change in input creates a completely different hash.
SHA-256 (256-bit) and SHA-512 (512-bit) are currently recommended for security purposes. MD5 and SHA-1 are deprecated for security but still useful for non-cryptographic checksums.
Common use cases: file integrity verification, password hashing (with salt), digital signatures, blockchain, and data deduplication.
Common Questions
What is a cryptographic hash?
A cryptographic hash is a fixed-size string generated from input data using a mathematical algorithm. It's a one-way function, meaning you cannot reverse the hash to get the original data. Hashes are used for data integrity verification, password storage, and digital signatures.
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. SHA3 variants are the newest and most secure options.
Is it safe to hash passwords in the browser?
Our tool is for educational and testing purposes. For production password hashing, use specialized password hashing algorithms like bcrypt, scrypt, or Argon2 on the server-side, as they include salt and are designed to be computationally expensive.
Are my hashed values stored?
No. All hash generation happens entirely in your browser using JavaScript. We do not store, log, or transmit any input text or generated hashes to our servers.