How to convert Gcode to STL online?
Upload Your G-code File
Click “Import” to upload your .gcode file into the gcode to stl converter.
View the gcode
The G-code appears in a 3D view. You can rotate the model or click Simulate to watch the print path.
Convert to STL
Click “Convert” button, select Export > STL (you may also choose 3MF if desired) and the file downloads to your device.
Features of Gcode to STL Conversion Tool
Instant Conversion
Converts G-code to STL in seconds. No waiting or credits.
Browser-Based
Runs entirely in your web browser, works on Windows, Mac, Linux, or mobile devices.
3D Preview
Visualize your print layers and toolpaths before exporting.
Customizable Output
Tweak extrusion width and accuracy for optimal model quality.
Supports 3MF Too
If you prefer the richer 3MF format, switch export to 3MF instead. (3MF supports colors/materials that STL cannot)
Privacy & Safety
Your files are processed locally in-browser (no cloud upload needed), so your data stays private.
Frequently Asked Questions
Why convert G-code to STL?
Converting G-code into an STL model allows you to visualize or edit a print as a standard 3D mesh. This is useful for reverse-engineering, inspecting prints, or modifying a model after slicing. Instead of running a slicer again, you can directly get the printed shape back.
How do I use this converter?
Simply import your .gcode file and click Convert. You can preview the layers and adjust settings before exporting. For detailed steps, see the How to convert Gcode to STL online section above.
What file formats are supported?
Input: .gcode (text-based G-code). Output: .stl (STL mesh) by default (and .3mf if selected). Both formats are universally supported by 3D editors and printers.
Do I need to install anything or create an account?
No. Our tool runs entirely online. No registration or download is required. Your G-code is converted right in the browser.
Can I preview my print first?
Yes. The Gcode viewer shows the G-code toolpath and resulting geometry. You can rotate or animate the print layers to inspect the model before exporting.
Are there file size limits?
Large G-code files may take longer to load and convert. We recommend G-code files under a few hundred MB. If conversion is slow, try reducing file size (e.g. by slicing at lower resolution) or splitting into smaller segments.
My STL looks blank or incomplete.
This may happen if your G-code contains mainly moves without extrusion (for example, a CNC job or non-extrusion commands). Ensure your G-code includes extrusion moves (such as from an FDM 3D printer slicer). You can also adjust the Extrusion Radius setting to capture fine walls.
Is my data secure?
Yes. The conversion happens in your browser or on secure servers. We do not permanently store your files. You can safely delete your session data any time.
Start converting your gcode to stl today!
Try our free, online gcode to stl converter now. No software or downloads needed!
Take your 3D printing to the next level!