NTLM Hash Generator
The MD4-based hash Windows stores for local accounts.
Free · no sign-up · runs locally·
About this tool
NTLM is the hash Windows stores for account passwords: the UTF-16 password run through MD4. It appears in the SAM database, in pass-the-hash attacks, and in Active Directory audits. Because MD4 is fast and unsalted, NTLM hashes fall quickly to modern cracking — which is exactly what makes auditing them valuable.
This tool computes NTLM hashes in your browser for password-strength auditing and authorized penetration testing. Enter a candidate password to see the hash a Windows system would store.
Like everything on encrypt.tools, this runs entirely in your browser — nothing you enter is transmitted or stored.
Do the same in a terminal
Reproduce or cross-check this tool with standard command-line utilities. For deterministic operations like hashing and encoding, the output matches exactly.
$ printf 'password' | iconv -t UTF-16LE | openssl dgst -md4 -provider legacy -provider default
MD4(stdin)= 8846f7eaee8fb117ad06bdd830b7586cFrequently asked questions about NTLM Hasher
What is an NTLM hash?+
It's the MD4 hash of a password encoded as UTF-16 little-endian — the format Windows stores in its SAM database and Active Directory. It has no salt, so identical passwords always produce identical hashes.
Why are NTLM hashes considered weak?+
NTLM uses unsalted MD4, which is extremely fast to compute. Modern GPUs try billions of candidates per second, so any password short enough to appear in a wordlist or brute-force range is recovered quickly. This is why long, unique passwords matter.
Is generating NTLM hashes legal?+
Computing a hash from a password you know is just math and is used for legitimate password auditing and authorized penetration testing. Only test systems and accounts you own or are authorized to assess.
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