Extract text from Thai noise-word lists (THA)
To convert THA word lists to another format, you need Microsoft Windows or other System software.
To convert other file formats to the "Noise Words List File" file type, you need software like Microsoft Windows or a similar tool.
A .THA file is a legacy Windows Thai Noise-Words List File used primarily by the obsolete Microsoft Windows Indexing Service and older versions of Microsoft SQL Server. It stores a plain-text list of Thai 'stop words' - common words that the system's full-text search engine ignores (such as conjunctions and prepositions) to prevent the search index from ballooning in size and slowing down queries. Typically named noise.tha and located in the C:\Windows\System32\ directory, it is a backend configuration file that most users will never need to open directly.
While the file is simple text, its obscure extension means most applications will not recognize it by default. The primary disadvantage of a .THA file is its strict association with legacy Microsoft infrastructure. If you are building a modern Natural Language Processing (NLP) application, training a machine learning model, or migrating full-text search to platforms like Elasticsearch, you cannot use a .THA file directly. You need to extract this valuable list of Thai stop words into a more accessible format.
The best conversion targets are universal data formats. Converting .THA to TXT makes it instantly readable across all operating systems. Converting to CSV or JSON allows developers to easily import the word list into databases or Python scripts for text analysis.
Because it is an obscure system extension, standard online document converters will reject it outright.
Convert.Guru analyzes your THA file, detects the exact format, and lets you read the text inside.
If you want to convert THA file to , you can use Microsoft Windows or similar software from the "Search Index Stop Words" category. In the File menu, look for Save As… or Export….
To convert files to THA, try Microsoft Windows or another comparable tool in the "Search Index Stop Words" category.
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 THA converter.