Hash Generator
Generate cryptographic SHA hashes from any text. Everything runs locally — your input never leaves the page.
Enter text above to see its hashes.
What is a hash?
A cryptographic hash converts any input into a fixed-length string of characters. The same input always produces the same hash, but it is practically impossible to reverse a hash back into the original text. Hashes are used to verify file integrity, store passwords securely and generate checksums. This tool uses the browser's native Web Crypto API for fast, standards-compliant results.
SHA-256 vs SHA-512
SHA-256 produces a 64-character (256-bit) hash and is the most widely used today. SHA-512 produces a longer 128-character hash with a larger security margin. SHA-1 is included for legacy compatibility but is no longer recommended for security-sensitive use.
Frequently Asked Questions
Is my text sent to a server?
No. Hashing happens entirely in your browser using the Web Crypto API.
Why is MD5 not included?
MD5 is cryptographically broken. We provide modern SHA algorithms that the browser supports natively and securely.
Can I hash passwords with this?
You can, but production password storage should use a slow, salted algorithm like bcrypt or Argon2 on the server.