Hash Generator computes SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic hashes of any text input. Each algorithm includes a security rating so you know which to use. Hashes are computed entirely in your browser — your data never leaves your device.
How to use this tool
Enter the text you want to hash.
All four hash algorithms compute simultaneously.
See each hash with its bit length and security rating.
Copy individual hashes with the Copy button.
SHA-256 is recommended for most use cases.
Frequently asked questions
What is a hash?
A fixed-length fingerprint of any input data. The same input always produces the same hash, but you can't reverse a hash to get the original input. Used for password storage, file integrity verification, and digital signatures.
Why is SHA-1 marked as broken?
Researchers demonstrated a practical collision attack in 2017 — creating two different files with the same SHA-1 hash. Browsers no longer trust SHA-1 certificates. Use SHA-256 or higher for security.
Which hash should I use?
SHA-256 for most purposes — it's fast, secure, and widely supported. SHA-512 for extra security or when hashing large files. For passwords, use bcrypt, scrypt, or Argon2 instead of plain SHA hashes.
Why is MD5 not included?
MD5 is cryptographically broken — collisions can be generated in seconds. It shouldn't be used for security purposes. Browser crypto APIs intentionally don't support it.