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Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes instantly.
hash-generator.tool
Hashes will appear here as you type
MD5 hand-implemented in JS; SHA family uses your browser's native Web Crypto API - nothing is sent to a server.
What is a hash generator?
This tool generates MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text, all in one place. SHA algorithms use your browser's native, hardware-accelerated Web Crypto API; MD5 (not supported by Web Crypto) is a hand-implemented, test-verified JavaScript version.
How to use this tool
- 1Type or paste text into the input.
- 2All five hash values update live as you type.
- 3Copy any individual hash.
Common use cases
Generating a checksum to verify file or text integrity
Creating a hash for a non-security use case like cache keys or deduplication
Checking what a given piece of text hashes to for debugging or verification
Comparing hash output across algorithms
Good to know
Frequently asked questions
Is MD5 or SHA-1 safe to use for passwords?
No - both are cryptographically broken for security purposes (collisions are practical to generate). They're included here for legacy compatibility and non-security uses like checksums, not for hashing passwords - use bcrypt for that.
Why does the same input always produce the same hash?
That's the defining property of a hash function - deterministic output for a given input, which is exactly what makes hashes useful for verifying data hasn't changed.
How was the hand-written MD5 implementation verified?
Against known official test vectors, including the empty string and the standard "quick brown fox" pangram, which both produce publicly documented, verifiable hash values.
Is my text sent anywhere?
No - all hashing happens locally in your browser.
quick_facts.json
{
"runs_in_browser": true,
"data_sent_to_server": false,
"signup_required": false,
"price": "free",
"category": "Security"
}