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Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

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Hash Generator: A hash generator converts any text or string into a fixed-length cryptographic hash such as MD5, SHA-1, SHA-256 or SHA-512. Type your input and copy the hash instantly — all computed in your browser, so sensitive text is never sent to a server.

Frequently Asked Questions

What is a hash function?
A hash function turns input of any length into a fixed-length string of characters. The same input always produces the same hash, but the process is one-way — you cannot reverse a hash back to the original text.
What is the difference between MD5 and SHA-256?
MD5 produces a 128-bit hash and is fast but cryptographically broken, so it should only be used for checksums, not security. SHA-256 produces a 256-bit hash and is a current, secure standard for integrity and passwords.
Is a hash the same as encryption?
No. Encryption is reversible with a key, while hashing is one-way and cannot be decrypted. Hashes are used to verify integrity and store password fingerprints, not to hide recoverable data.
Are my strings uploaded when I generate a hash here?
No. SnoopTool computes hashes entirely in your browser with JavaScript, so your input text is never uploaded, logged, or transmitted anywhere.

Go deeper

Read the SnoopTool guide behind this tool

The calculator gives you the number. These SnoopTool guides explain the method, the assumptions and the decision — with worked examples, data tables and FAQs.

Browse all SnoopTool guides →

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