Hash Generator
Generate SHA-256, SHA-1 or SHA-512 hashes from any text, computed locally in your browser.
How to use the Hash Generator
- Paste the text you want to hash.
- Choose SHA-256, SHA-1 or SHA-512.
- Copy the resulting hex digest.
About the Hash Generator
A cryptographic hash is a one-way fingerprint: the same input always gives the same output, and there is no way to reverse it. That makes hashes useful for verifying that a file or message has not changed. SHA-1 is included for compatibility with older systems but is considered broken for security purposes — use SHA-256 or SHA-512 for anything new. Hashing alone is not sufficient for storing passwords, which need a slow algorithm with a salt.
Frequently asked questions
Can a hash be reversed?
No. Hashing is one-way; the only way to find an input is to guess and test candidates.
Is SHA-1 still safe?
Not for security. Practical collision attacks exist — use SHA-256 or SHA-512 instead.
Is my text sent to a server?
No. Hashes are computed with the browser's built-in Web Crypto API and nothing leaves your device.
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