Online GCODE Converter

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What is a GCODE file?

GCODE is a machine control language used to operate 3D printers and CNC machines. It defines tool movements, speeds, temperatures, and other instructions required to build a physical object layer by layer.

GCODE files are generated from 3D models - typically in STL or OBJ format - by slicing software that translates geometry into precise printer commands. They are essential for additive manufacturing and universally supported by most 3D printer platforms.

How to open GCODE files

GCODE files can be opened with 3D printing and CNC control programs such as Pronterface, Repetier-Host, Cura, or OctoPrint, allowing users to preview toolpaths and adjust print parameters.

AnyConv lets you convert STL models directly into ready-to-print GCODE online. Upload your 3D model, choose your printer profile, and download optimized GCODE for fast, accurate 3D printing.

Key facts about GCODE

Full name: G-code File
Extension: .gcode
MIME type: text/x.gcode
Developed by: Numerical Control Community
Initial release: 1958

Useful links and resources

Wikipedia on GCODE

Convert to GCODE

Easily turn your files into GCODE format

STL to GCODE

🎯 Did You Know?

The first “hello world” of 3D printing

In maker communities, the classic first test print for a new 3D printer is a small plastic cube generated from a simple GCODE file. Much like programmers start with “Hello, World!”, 3D printing enthusiasts often begin with this cube to check calibration - turning GCODE into a rite of passage for beginners.

— Fact picked by Ethan Brooks

❓ Frequently Asked Questions

Answers to common questions about GCODE

My file didn’t convert to GCODE. What should I do?

Try our new advanced tool - STL to G-Code Converter 2.0. It’s a full-featured online slicer that converts 3D models into ready-to-print GCODE files with adjustable printer profiles and print settings.
Which formats can I convert to GCODE?

At the moment, we support only STL models as input. Support for OBJ and other 3D formats is planned for future updates.
Why is my GCODE file so large?

GCODE files can grow quickly depending on the model complexity, layer height, and printing parameters. A detailed model with many small features produces more movement commands, resulting in a larger file size.
Can I edit GCODE after conversion?

Yes, but do it carefully. You can open GCODE in any text editor to view or tweak parameters such as temperature or speed.
Does AnyConv optimize GCODE for my printer?

Our basic converter doesn’t include printer-specific profiles. For optimized results, use the upgraded STL to G-Code Converter 2.0 - it allows you to choose manufacturer, printer model, nozzle size, material, and process for best print quality.
What’s the maximum file size I can upload?

You can upload 3D models up to 100 MB in size. However, large files (over 10 MB) may take longer to process and convert due to their complexity.