NTLM Hash Generator
Generate the NTLM (NT) hash of a password: MD4 of the UTF-16LE text. Free and private: runs in your browser.
Enter a password to get its NTLM hash, as used by Windows and Active Directory. Useful for test fixtures and security training.
Hashing runs locally in your browser. Your input never leaves this page.
Use cases
- Verify a download or file checksum.
- Create test fixtures for authentication code.
- Debug a hash mismatch between two systems.
Frequently asked questions
Why is NTLM considered weak?
It is unsalted and very fast to compute, so leaked NTLM hashes are cracked quickly and can be used directly in pass-the-hash attacks.
Is the NTLM Hash Generator free?
Yes. It is free with no sign-up, and it runs entirely in your browser, so your input is never uploaded or stored.
Is hashing the same as encryption?
No. A hash is one-way: you cannot get the input back. Encryption is reversible with a key. Use slow password hashes (bcrypt, Argon2, PBKDF2) for passwords and fast hashes (SHA-256) for integrity checks.
Related tools
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