DWG to TXT Converter

DWG to TXT Conversion Explained

Converting .DWG to .TXT is strictly a data extraction process, not a visual conversion. When you convert a CAD drawing to a plain text file, you extract readable text entities—such as notes, dimensions, block attributes, and tables—while discarding all visual geometry.

People convert .DWG to .TXT to access drawing data without expensive CAD software. You gain a lightweight, universally readable file that is easy to search, translate, or parse with scripts. However, you lose all lines, arcs, 3D solids, layers, and spatial relationships. If your goal is to view the drawing without CAD software, this conversion is a bad idea. You should convert to .PDF instead.

Typical Tasks and Users

This conversion serves specific data-driven workflows:

• Estimators and Planners: Extracting Bill of Materials (BOM), parts lists, or equipment schedules stored in CAD tables.
• Translators: Pulling text from title blocks and drawing notes to translate into another language before re-importing.
• Data Engineers: Indexing legacy CAD archives so that drawing contents become searchable in a company database.
• Surveyors and CNC Programmers: Extracting raw X, Y, and Z coordinate data from specific drawing points to feed into manufacturing or mapping systems.

Software & Tool Support

Extracting text from proprietary CAD files requires specialized tools:

• AutoCAD: The native software by Autodesk. Users can extract text and attributes using the built-in Data Extraction wizard or custom AutoLISP scripts.
• Open Design Alliance (ODA): Provides the industry-standard SDK for reading .DWG files outside of AutoCAD. Many third-party converters rely on ODA libraries.
• QCAD: A 2D CAD application that offers command-line tools for basic file processing and data extraction.
• ezdxf: A Python library. While it primarily targets .DXF files, developers often convert .DWG to .DXF first, then use ezdxf to programmatically parse and export text to .TXT.

Pros and Cons of the Conversion

Pros:

• Universal Compatibility: Every operating system and device can open a .TXT file natively.
• Machine Readability: Plain text is ideal for feeding data into Python scripts, databases, or ERP systems.
• File Size: A .TXT file containing extracted notes is often kilobytes in size, compared to megabytes for the original .DWG.

Cons:

• Total Geometry Loss: All visual context is destroyed.
• Loss of Spatial Context: You get a list of text strings, but you no longer know where that text was located on the drawing.
• Formatting Loss: Fonts, text sizes, colors, and line weights are stripped away.

Conversion Difficulties & Why Convert.Guru

Extracting clean text from a .DWG file is technically difficult. .DWG is a complex, proprietary binary format. Text is not stored in a single continuous block; it is scattered across different entity types like TEXT, MTEXT (multiline text), dimensions, and block attributes.

MTEXT entities are particularly problematic because they contain internal formatting codes (e.g., \P for a new paragraph, or \f for font changes). A poor conversion tool will output these raw codes, resulting in messy, unreadable text. Additionally, legacy CAD files often use older ANSI character encodings, which can corrupt special engineering symbols (like diameter Ø or degree ° symbols) when converted to modern UTF-8 text.

Convert.Guru handles this conversion accurately by parsing the proprietary binary structure, identifying all text-bearing entities, and safely stripping out internal MTEXT formatting codes. It resolves character encoding conflicts automatically, ensuring that engineering symbols remain intact in the final .TXT file, all without requiring an AutoCAD license.

DWG vs. TXT: What is the better choice?

Which format should you choose?

Choose .DWG when you are actively designing, drafting, or sharing architectural and engineering models. It is the mandatory format for preserving editable CAD geometry.

Choose .TXT only when you need to extract written data, notes, or coordinates from a drawing to use in a spreadsheet, database, or translation software.

When to avoid: Do not convert to .TXT if you want a human-readable, text-based version of the entire CAD drawing. If you need a plain-text file that still retains CAD geometry, you should convert .DWG to .DXF (Drawing Exchange Format). If you simply need to view the drawing, convert to .PDF.

Conclusion

Converting .DWG to .TXT makes sense exclusively for data extraction workflows, such as pulling BOMs, coordinates, or translation strings from CAD files. The biggest limitation to watch for is the complete destruction of visual geometry and spatial context; you will only receive the raw text data. Convert.Guru provides a reliable, fast solution for this exact conversion, cleanly stripping away proprietary formatting codes and preserving engineering symbols to deliver highly accurate, machine-readable text files.