Security
Secure Hash Generator
100% Local (crypto.subtle). Your data never leaves the browser.
Input
Type or paste text to generate cryptographic hash values instantly.
Hash Results
Each algorithm computes independently from the same input value.
SHA-1
SHA-256
SHA-512
Hashes are one-way fingerprints. You cannot restore original text from a hash.
Frequently Asked Questions
What is a cryptographic hash function?
A cryptographic hash function takes any input and produces a fixed-length digest. The same input always produces the same output, but even a single character change produces a completely different hash — this sensitivity is called the avalanche effect.
Which hash algorithm should I use?
For file integrity verification: SHA-256 or SHA-512. For passwords: never store raw hashes — use bcrypt, scrypt, or Argon2 with a unique salt. Avoid MD5 and SHA-1 for security purposes as both are cryptographically broken.
What is the difference between MD5, SHA-1, and SHA-256?
MD5 produces a 128-bit (32-char) hash; SHA-1 produces 160-bit (40-char); SHA-256 produces 256-bit (64-char). MD5 and SHA-1 have known collision vulnerabilities. SHA-256 is the current recommended standard for most security applications.