Tool Introduction

NTLM hash (New Technology LAN Manager Hash) is a password hashing algorithm widely used in Windows operating systems and their network services. This online tool aims to provide users with a fast and convenient NTLM hash value calculation function. You only need to enter a plaintext, Hex, or Base64 encoded string and select the desired output case format to generate the corresponding NTLM hash value with one click, displayed in both Hex and Base64 common formats. Whether for security testing, password analysis, or system management, this tool can provide you with efficient NTLM hash calculation services.

How to Use

In the "String to encrypt" text box, enter the original string for which you need to calculate the NTLM hash value.
According to the actual format of the string you entered, select the corresponding option from the "Input Type" dropdown menu: "Plaintext", "Hex", or "Base64". The tool defaults to "Plaintext" input.
In the "Case" radio box, select whether you want the final output NTLM hash value to be presented in "Lowercase" or "Uppercase" form.
After completing the above settings, click the tool's "Calculate" or "Generate" button (the specific button name is subject to the page display) to view the generated NTLM hash value in the result area.

Input parameter format requirements:

String to encrypt: This is a required field and supports entering any text characters.
Input Type: If "Hex" is selected, please ensure that the input is a valid hexadecimal string; if "Base64" is selected, please ensure that the input is a valid Base64 encoded string. Selecting the correct input type is key to obtaining the correct hash result.
Case: This option will control the case display of the final output Hex and Base64 format hash values.

Output result format:

The tool will clearly display the NTLM hash results in a list, mainly including the following two columns:

Hex: The hexadecimal string representation of the NTLM hash value.
Base64: The Base64 encoded string representation of the NTLM hash value.

Usage Example

Example Input:

String to encrypt: password
Input Type: Plaintext
Case: Lowercase

Expected Output Result:

Hex	Base64
8846f7eaee8fb117ad06bdd830b7586c	iEb36u6PsRetB73YMIdYnA==

Specific operation demonstration:

Fill in password in the "String to encrypt" input box.
Select Plaintext for "Input Type".
Select Lowercase for "Case".
Click the calculate button, and the NTLM hash values in Hex and Base64 formats will be displayed at the bottom of the page.

Frequently Asked Questions

Q: What scenarios are NTLM hashes mainly used for?
A: NTLM hashes are primarily used for user authentication in Microsoft Windows operating systems, especially in earlier Windows versions and certain specific network protocols. They convert user passwords into hash values for storage and verification, preventing the leakage of plaintext passwords.
Q: What input formats does this tool support?
A: This NTLM hash online tool supports three common input formats: plaintext, hexadecimal (Hex), and Base64 encoding. You can choose the appropriate input type according to your actual needs.
Q: What is the format of the output NTLM hash value?
A: The tool will provide both hexadecimal (Hex) and Base64 encoding formats of the NTLM hash value. Users can also choose the case of the output result.
Q: How is NTLM hash different from hash algorithms like MD5 and SHA-1?
A: NTLM hash is a hash algorithm specific to the Windows authentication system. Its internal implementation differs from general hash algorithms like MD5 or SHA-1, and it is generally considered less secure than modern recommended hash algorithms (such as PBKDF2, bcrypt, etc.) because its design has limitations in dealing with brute-force and rainbow table attacks.

Notes

Please ensure that the content you enter in "String to encrypt" is accurate; any slight difference will lead to completely different hash results.
Be sure to select the "Input Type" correctly, as it directly affects how the tool parses the input string. For example, if you enter a Base64 encoded string but select "Plaintext", the tool will calculate the hash of the Base64 string itself as plaintext, rather than its decoded content.
NTLM hash is a relatively old hash algorithm. In modern applications with high security requirements, it is generally recommended to use more powerful key derivation functions (such as PBKDF2, bcrypt, scrypt) to store and verify passwords to enhance resistance to cracking attacks. This tool is more suitable for compatibility testing, analysis, or educational purposes.
This online tool only provides NTLM hash calculation functions and does not store or record any sensitive information entered by users. Please feel free to use it.