VRML to STL Converter

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

  • Files stay on your device
  • Free, no sign-up
  • Units and up axis handled
  • Batch and .zip

Drop a VRML file to convert

One file, many, or a .zip

In: STL · STEP · IGES · OBJ · 3MF · GLB · glTF · PLY · FBX · DAE · 3DS · AMF · VRML · ZIP

Converted on your device. Nothing is uploaded.

    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 from VRML to STL

    Worked out from what each format can store and what this converter writes. Nothing is changed silently: the preview shows the size and orientation before you download.

    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 to STL: what actually happens

    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.

    VRML at a glance

    Virtual Reality Modeling Language (VRML97) · .wrl

    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

    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.

    Open VRML files in the viewer

    STL at a glance

    Stereolithography (Standard Triangle Language) · .stl

    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

    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.

    Open STL files in the viewer

    Tips for VRML to STL

    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.

    VRML to STL 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.