NTLM Hash Generator
Generate the NT hash of a password using MD4 with UTF-16LE encoding (Windows NTLM authentication).
Security note: NTLM hashes are generated entirely in your browser — no password is transmitted. NTLM is considered weak; use this tool for testing, CTF, or auditing only. Modern systems prefer NTLMv2 or Kerberos.
What is an NTLM hash?
The NTLM NT hash is produced by applying MD4 to the UTF-16 little-endian encoding of a password. It is stored in the Windows SAM database and Active Directory, and used in Pass-the-Hash attacks. MD4 produces a 128-bit (32 hex character) digest. Because MD4 is fast and unsalted, NTLM hashes are vulnerable to rainbow tables and brute-force attacks — avoid using NTLM wherever possible.
Private & free — this tool runs entirely in your browser.