Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from any text instantly. Free, runs in your browser — your data never leaves your device.
What is Hash Generator?
The Hash Generator computes cryptographic hash values from any text input using MD5, SHA-1, SHA-256, and SHA-512 algorithms. Hashes are one-way functions — they produce a fixed-length fingerprint from any input that cannot be reversed back to the original text.
Common uses include verifying file integrity, comparing checksums, storing password fingerprints in databases, and generating unique identifiers. All four hashes update in real time as you type.
Everything runs in your browser using the Web Crypto API for SHA hashes and a pure JavaScript MD5 implementation. Your data never leaves your device.
How to use
Frequently asked questions
A hash is a fixed-length string produced by a mathematical function. The same input always produces the same hash, but you cannot reverse a hash back to the original text.
MD5 is not safe for security-critical purposes like password hashing or digital signatures — it has known collision vulnerabilities. Use it only for checksums and non-security purposes. For security, use SHA-256 or SHA-512.
Hash values depend on exact input encoding. Make sure you're not adding trailing spaces or line breaks. This tool hashes the exact bytes of your input as UTF-8.
Theoretically yes (called a collision), but with SHA-256 and SHA-512 this is computationally infeasible in practice. MD5 has known collision vulnerabilities.