Hash Generator

About Hash Generator

Free online hash generator. Create SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic hashes from any text input. Uses the browser's Web Crypto API — cryptographically strong and entirely client-side. No text is ever sent to a server. Useful for verifying file integrity, storing passwords (salted), and checking data consistency.

How to Use Hash Generator

1. Type or paste your input text into the text field.
2. Select the hash algorithm: SHA-1, SHA-256, SHA-384, or SHA-512.
3. The hash value generates instantly as you type.
4. Click Copy to copy the hash string to your clipboard.

Frequently Asked Questions

What is a cryptographic hash function?

A cryptographic hash function takes an input of any length and produces a fixed-size output (the hash). The same input always produces the same hash, but it is computationally infeasible to reverse the hash back to the original input. Even a single character change in the input produces a completely different hash.

Which hash algorithm should I use?

Use SHA-256 for most general purposes — it is the current industry standard. SHA-512 offers higher security for very sensitive applications. Avoid SHA-1 for security-critical uses as it has known weaknesses, though it is still useful for checksums and non-security purposes.

Can I use SHA-256 to hash passwords?

No, not directly. Raw SHA-256 is too fast, making it vulnerable to brute-force attacks. For password storage, use a dedicated password hashing function like bcrypt, scrypt, or Argon2, which are intentionally slow and include salting.

Is my input stored anywhere?

No. Hashing happens entirely in your browser using the Web Crypto API. Your data never leaves your device.