Hash Generator

Generate MD5, SHA1, SHA256 and SHA512 hashes from any text string, entirely in your browser.

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Frequently asked questions

What is a hash?
A cryptographic hash is a fixed-length fingerprint of any input. The same input always produces the same hash, but it is computationally infeasible to reverse a hash back to the original input.
Which hash algorithm should I use?
Use SHA256 or SHA512 for security-sensitive applications. MD5 and SHA1 are considered cryptographically broken and should only be used for checksums or non-security purposes.
Are hashes calculated in my browser?
Yes. SHA1/SHA256/SHA512 use the Web Crypto API built into your browser. MD5 is computed using a JavaScript implementation. Nothing is sent to the server.