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Tool Factory

Hashing & Checksums

LM Hash Calculator

Calculate or verify a digest with LM Hash. Enter the data, choose the digest options, then copy the calculated value.

Tool workspace

Your input stays in this browser.

Add the required input to continue.

Needs input

You can run the tool again after any change.

LM uses only the first 14 ASCII characters and converts them to uppercase. Do not use it for new password storage.

Your result appears here

Calculate or verify a digest with LM Hash. Enter the data, choose the digest options, then copy the calculated value.

This tool runs open-source code from CyberChef by GCHQ (Apache License 2.0). See open-source credits.

LM Hash Calculator uses LM Hash Calculator for the supplied input. It produces a legacy LAN Manager password hash for compatibility inspection, not an NT hash.

It produces a legacy LAN Manager password hash for compatibility inspection, not an NT hash. This result runs in the browser for this catalog category. Processing runs in the browser.

This operation reports a digest or checksum; it does not provide encryption, identity, or complete application security.

Instructions

  1. Provide text or data for this tool.
  2. Use a public fixture from the legacy system under investigation. This applies to LM Hash Calculator.
  3. Compare the result only with an LM field, not an NTLM response or NT hash. This applies to LM Hash Calculator.

Example

Input: Use a disposable password such as "Password" as text.

Settings: LM Hash Calculator: There are no cost, salt, or encoding controls. The operation calls the preserved smbhash.lmhash implementation.

Result: It produces a legacy LAN Manager password hash for compatibility inspection, not an NT hash.

Limits

  • LM Hash Calculator: LAN Manager password hashing is obsolete and unsuitable for new password storage.
  • LM Hash Calculator: This operation does not perform a network authentication exchange.

Questions

What input does LM Hash Calculator accept?

LM Hash Calculator accepts text. An LM Hash, or LAN Manager Hash, is a deprecated way of storing passwords on old Microsoft operating systems. It is particularly weak and can be cracked in seconds on modern hardware using rainbow tables.

Does LM Hash Calculator need extra settings?

LM Hash Calculator does not define extra operation settings. It uses its built-in behavior with the supplied input.

What does LM Hash Calculator return?

LM Hash Calculator returns text. An LM Hash, or LAN Manager Hash, is a deprecated way of storing passwords on old Microsoft operating systems. It is particularly weak and can be cracked in seconds on modern hardware using rainbow tables.