Security
Hash Generator
Runs entirely in your browser · Nothing is sent to our servers
SHA-1, SHA-256, SHA-384, SHA-512 from text or any file. Hash multiple algorithms at once.
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How it works
A cryptographic hash transforms any input into a fixed-length fingerprint. It is one-way (you cannot reverse it), deterministic (the same input always gives the same hash), and exhibits the avalanche effect — changing even one character produces a completely different output.
Common uses include file integrity (verifying a download matches the original), password storage (databases store the hash, not the password), and digital signatures.
MD5 and SHA-1 are deprecated for security-sensitive use due to known collision vulnerabilities. Use SHA-256 or higher for any security purpose.
Hashing runs in your browser using the Web Crypto API. Files and text never leave your device.
How it works▾
A cryptographic hash transforms any input into a fixed-length fingerprint. It is one-way (you cannot reverse it), deterministic (the same input always gives the same hash), and exhibits the avalanche effect — changing even one character produces a completely different output.
Common uses include file integrity (verifying a download matches the original), password storage (databases store the hash, not the password), and digital signatures.
MD5 and SHA-1 are deprecated for security-sensitive use due to known collision vulnerabilities. Use SHA-256 or higher for any security purpose.
Hashing runs in your browser using the Web Crypto API. Files and text never leave your device.