Hash generator
Type text and get its SHA-1, SHA-256 and SHA-512 hashes at once — useful for checksums, comparing files, or verifying downloads.
What a hash is (and isn't)
A hash is a one-way fingerprint: the same input always produces the same output, but you can't reverse it back to the original text. Change one character and the whole hash changes completely — that's what makes hashes useful for spotting tampering or verifying a download matches the original.
Which one should I use?
SHA-256 for almost everything today — it's the modern standard. SHA-512 is slightly slower but a bit stronger. SHA-1 is here only for compatibility with older systems; it's cryptographically broken and shouldn't be relied on for security.
Can I hash a password with this?
Not for storing passwords — plain SHA hashes are fast to compute, which makes them easy to brute-force. Use the dedicated bcrypt tool for that instead.
Is my text sent anywhere?
No — hashing runs entirely in your browser using the Web Crypto API. Nothing is uploaded.
