Click the "Select File" button above, and choose your LM file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert LM to another file type
To convert LM Models to another format, you need Microsoft Speech or other Data software.
Convert a file to LM
To convert other file formats to the "Language Model File" file type, you need software like Microsoft Speech or a similar tool.
About LM files
LM files are Language Model files primarily used in Natural Language Processing (NLP), speech recognition, and machine translation applications. They store statistical probabilities of word sequences, enabling software like Microsoft Speech or Fluency to predict text and understand spoken commands. These models are crucial for accurate speech-to-text conversion and language generation. Users often encounter .LM files when working with custom voice models, acoustic training toolkits, or proprietary translation engines. The main disadvantage of the .LM format is its lack of universal standardization. While some are stored in the readable .ARPA text format, many are compiled into heavy, proprietary binary files to maximize loading speeds and minimize memory footprint. This means they are often locked to a specific software ecosystem, cannot be opened with standard desktop tools, and are generally unreadable by humans. Because of these limitations, developers often need to convert .LM files to extract the underlying n-gram data. The best conversion targets are .ARPA, plain TXT, CSV, or JSON to make the statistical data transferrable to other NLP frameworks. Keep in mind that decompiling a binary model back to text might lose specific engine-optimized weights. Converting these files is notoriously difficult because they are often closed, proprietary formats. Standard online converters fail to process them because they lack the highly specialized NLP libraries required to parse the model weights and vocabulary. Just drag and drop your file onto convert.guru to see what it is and convert it if supported. Even if it is a heavily compiled model, our analysis tools can inspect the file, extract readable text strings, and determine if an underlying format is supported for viewing or extraction.
Convert.Guru analyzes your LM file, detects the exact format, and lets you read the text inside.
If you want to convert LM file to LF, SYS, DLL, EXE, DRV, VXD, 386, COM, BAT, CMD, SCR or PIF, you can use Microsoft Speech or similar software from the "Natural Language Processing Data" category. In the File menu, look for Save As… or Export….
To convert MSI, EXE, REG, MST, LNK, CAB, CAT, DRV, INF, SYS, MSU or DLL files to LM, try Microsoft Speech or another comparable tool in the "Natural Language Processing Data" category.
The LM Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our LM converter.