Security · Developer Tools

Hash Tool

Encode strings with all known algorithms. Identify and decode hashes via rainbow table lookup.

Input string

String to hash

HMAC key (optional — enables HMAC variants)

bcrypt rounds (10 = standard, higher = slower)

Note on algorithm types: MD5, SHA-1 are fast but cryptographically broken — do not use for passwords. SHA-256/512, SHA-3 are secure for general use. bcrypt, Argon2 are designed for passwords — intentionally slow. HMAC adds a secret key to prevent hash reversal.

Hash to decode

Paste hash

Algorithm (auto-detected — override if needed)

How this works: Lookup runs in parallel across 4 providers: hashes.com, nitrxgen.net (MD5, 1 trillion+ candidates), md5decrypt.net (set MD5DECRYPT_KEY, 100 req/day free) and Have I Been Pwned (SHA-1 breach check via k-anonymity). Results appear from the first provider that finds a match. bcrypt, Argon2 and scrypt cannot be reversed.