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Convert STEP to GLB Online

Convert STEP/STP models to a downloadable GLB for 3D viewing. GLB contains mesh geometry, not an editable CAD feature tree.

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Capabilities and limits

  • Convert STEP/STP models to a downloadable GLB for 3D viewing. GLB contains mesh geometry, not an editable CAD feature tree.
  • Conversion preserves supported geometry rather than native parametric feature history; verify output units, completeness and geometry.
  • Files are uploaded for server processing; support depends on format, version and geometry.
  • Viewing and measuring do not require an account. Free conversion points are valid for 90 days. Sign in to convert, save files across devices or create share links.
On this page

Convert STEP/STP models to a downloadable GLB for 3D viewing. GLB contains mesh geometry, not an editable CAD feature tree.

Upload and inspect your model

Upload a supported file or a ZIP containing the root assembly and its referenced components. The workspace provides the currently validated conversion formats.

Download the converted file

Select the source and output format, start conversion and download the result. A format with companion files is delivered as a ZIP. Conversion does not recover the original feature tree.

Partial assemblies remain useful

When components are missing, available geometry can still be viewed and downloaded with an incomplete-assembly warning. Dimensions, volume and mass describe loaded geometry only. A file with no usable geometry cannot be displayed.

Input formats: STEP / STP

Points: viewing and measuring are free. A new account gets 3 free conversion points; free points are valid for 90 days. One point converts one file to every output format for 30 days, and a failed or incomplete conversion uses none. See pricing.

Open this tool

General steps for uploading, viewing, sectioning, measuring, converting and exporting are explained once in How it works. This page covers what is specific to this file type.

Real CADProps screenshots

The screenshots show the English interface. Captions and instructions describe the same operations.

Convert CAD files — block.step
Convert CAD files — block.step

Sample source and verification

Properties — step-to-glb.glb · 40 × 30 × 20 mm · 24,000.003 mm³ · 5,200 mm²
Properties — step-to-glb.glb · 40 × 30 × 20 mm · 24,000.003 mm³ · 5,200 mm²

When a result needs another check

Viewing can start without an account. Conversion, account storage and share creation require signing in. Temporary files expire after the displayed retention period. Read the privacy statement for server processing and deletion, and the accuracy notes before using numerical results. Do not assume that hiding a part, clipping it or exploding an assembly changes the exported source geometry.

When a result needs another check · Input formats

Continue with a related task

Original article: CADProps · https://www.cadprops.com/tools/step-to-glb/

A reproducible example

Convert the generated 20 × 30 × 40 mm STEP block to GLB for browser handoff. Check the orientation and bounding box; GLB display geometry does not preserve feature history.

Repository-generated samples are synthetic test models. Verify your own model's units and geometry before using results.

Supported formats
All formats and limits →

Questions about this task

How can I convert a STEP or STP file to a GLB model online?

Open a supported STEP or STP model, sign in and choose GLB as the conversion target. Download and inspect the result in the receiving viewer, checking dimensions and loaded components.

Is my STEP file uploaded to a server during GLB conversion?

Yes. Selecting or dropping files uploads and processes them immediately in every tool. Files are processed temporarily on this server. The workspace displays the configured retention time. Delete in the file menu removes temporary workspace files; closing a view does not.

Does STEP to GLB preserve CAD features and assembly mates?

No. GLB contains mesh geometry for viewing, not an editable CAD feature tree or native assembly mates. Keep the original STEP file for solid-geometry workflows.

Are measurements of the GLB mesh as exact as the STEP solid?

No. GLB measurements are mesh approximations. Compare a known dimension with the STEP source and verify units before using the output; incomplete assemblies include loaded components only.

Do I need an account to download a converted GLB file?

View and measure without an account. Register or sign in to convert, save files and create share links. Recipients can view shared models without an account.

Related reading

Checks that help with this file.

All guides →
Opening files

STEP File (.step, .stp): What It Is and How to Open It

A STEP file is a neutral ISO 10303 CAD model saved as plain text. See what it contains, how to open a .step or .stp file online, and what to check first.

Read the guide →File formats

GLB vs glTF for CAD: 3D Model Files, Assets and Units

Use a display derivative for the web while keeping engineering geometry and revision records separate.

Read the guide →Troubleshooting

Reduce STEP File Size: Keep Required CAD Geometry

Distinguish archive compression, model simplification and display optimization before changing a CAD handoff.

Read the guide →