# VRML to STL Converter

> Turn VRML97 (.wrl) files from scanners and color printing services into STL for a regular printer.

Page: https://printpal.io/convert/wrl-to-stl
Updated: 2026-11-12
Use it: open https://printpal.io/convert/wrl-to-stl in a browser and drop a file. Free, no account, files are processed locally and never uploaded.

VRML is common in full-color 3D printing and scanning. STL drops the colors and keeps the shape. The VRML spec says metres, and the converter follows it, so a 0.1 m scan becomes 100 mm.

Many printing files ignore the spec and use millimetres. If the model comes out a thousand times too big, the converter suggests reading it as millimetres.

## How to convert VRML to STL

1. **Drop your VRML files.** Drop .wrl files with their texture images.
2. **Check the preview.** The model appears at the size and orientation it will have. Fix the file units, up axis or size under Size, units and orientation if needed.
3. **Choose STL options.** Binary STL by default (smallest, read everywhere). Tick ASCII only if an old tool asks for text STL.
4. **Convert and download.** One file downloads straight away. A batch gives a download per file and one .zip of all of them.

## What carries over

| | Result |
|---|---|
| Geometry | Every face is kept; quads and n-gons are split into triangles. |
| Color | Dropped: STL cannot store color. |
| Units | Converted from metres to millimetres, so it keeps its real size. A 0.05 m part comes out 50 mm. |
| Orientation | Turned from Y up to Z up, so it stands on the plate in a slicer. |
| Objects | Merged into one surface: STL has no objects. |

## VRML at a glance (Virtual Reality Modeling Language (VRML97))

VRML97 was the web's first 3D format. It lives on in full-color 3D printing and 3D scanning because it carries per-vertex color and textures in plain text.

- **Stores:** A text scene: shapes, indexed face sets, materials, textures
- **Color:** Per vertex, per face, materials and textures
- **Units:** Metres by spec; many printing files use millimetres
- **Up axis:** Y
- **Standard:** ISO/IEC 14772
- **Opens in:** Full-color 3D printing services, scanner software, MeshLab

## STL at a glance (Stereolithography (Standard Triangle Language))

Created by 3D Systems in 1987 for the first stereolithography printers, STL is still the format every slicer and print service accepts. It describes a surface as a list of independent triangles, with no shared vertices, units, colors or scene structure.

- **Stores:** Loose triangles: three corners and a normal each, binary or ASCII
- **Color:** None in the standard
- **Units:** None written; slicers assume millimetres
- **Up axis:** Z, the slicer convention
- **File size:** 50 bytes per triangle in binary, about 5 times that as ASCII
- **Opens in:** Every slicer, CAD tool and 3D app

## Tips

- **Keep colors** Convert to GLB or OBJ to keep the color; then the AMS converter can make filaments.
- **Check the size** Confirm the preview size before converting.
- **Watertight** Scans need hole filling before printing.

## FAQ

### Are colors kept in WRL to STL?

No, STL has no color.

### Why is the STL 1000 times too big?

The file was in millimetres, not the spec's metres. Set the file units to millimetres.

### Does it support VRML 1.0?

No, VRML97 only.

### Is the converter free? Are there limits?

Free, with no sign-up, watermark or file count limit. Batches and files of a few hundred MB work on most laptops; the only limit is your device's memory.

### Are my files uploaded?

No. Files are read and written by JavaScript and WebAssembly in your browser and never sent to PrintPal. The STEP and IGES reader is the only extra download, once, from a public CDN.

## Related

- [STL to OBJ Converter](https://printpal.io/convert/stl-to-obj)
- [STL to 3MF Converter](https://printpal.io/convert/stl-to-3mf)
- [STL to GLB Converter](https://printpal.io/convert/stl-to-glb)
- [STL to PLY Converter](https://printpal.io/convert/stl-to-ply)
- [STL to USDZ Converter](https://printpal.io/convert/stl-to-usdz)
- [OBJ to STL Converter](https://printpal.io/convert/obj-to-stl)
- [3MF to STL Converter](https://printpal.io/convert/3mf-to-stl)
- [STEP to STL Converter](https://printpal.io/convert/step-to-stl)
- [3D model viewer](https://printpal.io/tools/3d-model-viewer)
- [3D model converter](https://printpal.io/tools/3d-model-converter)
- [Mesh Repair](https://printpal.io/tools/mesh-repair)
- PrintPal for LLMs: https://printpal.io/llms.txt